Add PHPMailer v5.2.23

2 files changed, 5290 insertions, 0 deletions

diff --git a/app/class/phpmailer.class.php b/app/class/phpmailer.class.php
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+<?php
+/**
+ * PHPMailer - PHP email creation and transport class.
+ * PHP Version 5
+ * @package PHPMailer
+ * @link https://github.com/PHPMailer/PHPMailer/ The PHPMailer GitHub project
+ * @author Marcus Bointon (Synchro/coolbru) <phpmailer@synchromedia.co.uk>
+ * @author Jim Jagielski (jimjag) <jimjag@gmail.com>
+ * @author Andy Prevost (codeworxtech) <codeworxtech@users.sourceforge.net>
+ * @author Brent R. Matzelle (original founder)
+ * @copyright 2012 - 2014 Marcus Bointon
+ * @copyright 2010 - 2012 Jim Jagielski
+ * @copyright 2004 - 2009 Andy Prevost
+ * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
+ * @note This program is distributed in the hope that it will be useful - WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+/**
+ * PHPMailer - PHP email creation and transport class.
+ * @package PHPMailer
+ * @author Marcus Bointon (Synchro/coolbru) <phpmailer@synchromedia.co.uk>
+ * @author Jim Jagielski (jimjag) <jimjag@gmail.com>
+ * @author Andy Prevost (codeworxtech) <codeworxtech@users.sourceforge.net>
+ * @author Brent R. Matzelle (original founder)
+ */
+class PHPMailer
+{
+    /**
+     * The PHPMailer Version number.
+     * @var string
+     */
+    public $Version = '5.2.23';
+
+    /**
+     * Email priority.
+     * Options: null (default), 1 = High, 3 = Normal, 5 = low.
+     * When null, the header is not set at all.
+     * @var integer
+     */
+    public $Priority = null;
+
+    /**
+     * The character set of the message.
+     * @var string
+     */
+    public $CharSet = 'iso-8859-1';
+
+    /**
+     * The MIME Content-type of the message.
+     * @var string
+     */
+    public $ContentType = 'text/plain';
+
+    /**
+     * The message encoding.
+     * Options: "8bit", "7bit", "binary", "base64", and "quoted-printable".
+     * @var string
+     */
+    public $Encoding = '8bit';
+
+    /**
+     * Holds the most recent mailer error message.
+     * @var string
+     */
+    public $ErrorInfo = '';
+
+    /**
+     * The From email address for the message.
+     * @var string
+     */
+    public $From = 'root@localhost';
+
+    /**
+     * The From name of the message.
+     * @var string
+     */
+    public $FromName = 'Root User';
+
+    /**
+     * The Sender email (Return-Path) of the message.
+     * If not empty, will be sent via -f to sendmail or as 'MAIL FROM' in smtp mode.
+     * @var string
+     */
+    public $Sender = '';
+
+    /**
+     * The Return-Path of the message.
+     * If empty, it will be set to either From or Sender.
+     * @var string
+     * @deprecated Email senders should never set a return-path header;
+     * it's the receiver's job (RFC5321 section 4.4), so this no longer does anything.
+     * @link https://tools.ietf.org/html/rfc5321#section-4.4 RFC5321 reference
+     */
+    public $ReturnPath = '';
+
+    /**
+     * The Subject of the message.
+     * @var string
+     */
+    public $Subject = '';
+
+    /**
+     * An HTML or plain text message body.
+     * If HTML then call isHTML(true).
+     * @var string
+     */
+    public $Body = '';
+
+    /**
+     * The plain-text message body.
+     * This body can be read by mail clients that do not have HTML email
+     * capability such as mutt & Eudora.
+     * Clients that can read HTML will view the normal Body.
+     * @var string
+     */
+    public $AltBody = '';
+
+    /**
+     * An iCal message part body.
+     * Only supported in simple alt or alt_inline message types
+     * To generate iCal events, use the bundled extras/EasyPeasyICS.php class or iCalcreator
+     * @link http://sprain.ch/blog/downloads/php-class-easypeasyics-create-ical-files-with-php/
+     * @link http://kigkonsult.se/iCalcreator/
+     * @var string
+     */
+    public $Ical = '';
+
+    /**
+     * The complete compiled MIME message body.
+     * @access protected
+     * @var string
+     */
+    protected $MIMEBody = '';
+
+    /**
+     * The complete compiled MIME message headers.
+     * @var string
+     * @access protected
+     */
+    protected $MIMEHeader = '';
+
+    /**
+     * Extra headers that createHeader() doesn't fold in.
+     * @var string
+     * @access protected
+     */
+    protected $mailHeader = '';
+
+    /**
+     * Word-wrap the message body to this number of chars.
+     * Set to 0 to not wrap. A useful value here is 78, for RFC2822 section 2.1.1 compliance.
+     * @var integer
+     */
+    public $WordWrap = 0;
+
+    /**
+     * Which method to use to send mail.
+     * Options: "mail", "sendmail", or "smtp".
+     * @var string
+     */
+    public $Mailer = 'mail';
+
+    /**
+     * The path to the sendmail program.
+     * @var string
+     */
+    public $Sendmail = '/usr/sbin/sendmail';
+
+    /**
+     * Whether mail() uses a fully sendmail-compatible MTA.
+     * One which supports sendmail's "-oi -f" options.
+     * @var boolean
+     */
+    public $UseSendmailOptions = true;
+
+    /**
+     * Path to PHPMailer plugins.
+     * Useful if the SMTP class is not in the PHP include path.
+     * @var string
+     * @deprecated Should not be needed now there is an autoloader.
+     */
+    public $PluginDir = '';
+
+    /**
+     * The email address that a reading confirmation should be sent to, also known as read receipt.
+     * @var string
+     */
+    public $ConfirmReadingTo = '';
+
+    /**
+     * The hostname to use in the Message-ID header and as default HELO string.
+     * If empty, PHPMailer attempts to find one with, in order,
+     * $_SERVER['SERVER_NAME'], gethostname(), php_uname('n'), or the value
+     * 'localhost.localdomain'.
+     * @var string
+     */
+    public $Hostname = '';
+
+    /**
+     * An ID to be used in the Message-ID header.
+     * If empty, a unique id will be generated.
+     * You can set your own, but it must be in the format "<id@domain>",
+     * as defined in RFC5322 section 3.6.4 or it will be ignored.
+     * @see https://tools.ietf.org/html/rfc5322#section-3.6.4
+     * @var string
+     */
+    public $MessageID = '';
+
+    /**
+     * The message Date to be used in the Date header.
+     * If empty, the current date will be added.
+     * @var string
+     */
+    public $MessageDate = '';
+
+    /**
+     * SMTP hosts.
+     * Either a single hostname or multiple semicolon-delimited hostnames.
+     * You can also specify a different port
+     * for each host by using this format: [hostname:port]
+     * (e.g. "smtp1.example.com:25;smtp2.example.com").
+     * You can also specify encryption type, for example:
+     * (e.g. "tls://smtp1.example.com:587;ssl://smtp2.example.com:465").
+     * Hosts will be tried in order.
+     * @var string
+     */
+    public $Host = 'localhost';
+
+    /**
+     * The default SMTP server port.
+     * @var integer
+     * @TODO Why is this needed when the SMTP class takes care of it?
+     */
+    public $Port = 25;
+
+    /**
+     * The SMTP HELO of the message.
+     * Default is $Hostname. If $Hostname is empty, PHPMailer attempts to find
+     * one with the same method described above for $Hostname.
+     * @var string
+     * @see PHPMailer::$Hostname
+     */
+    public $Helo = '';
+
+    /**
+     * What kind of encryption to use on the SMTP connection.
+     * Options: '', 'ssl' or 'tls'
+     * @var string
+     */
+    public $SMTPSecure = '';
+
+    /**
+     * Whether to enable TLS encryption automatically if a server supports it,
+     * even if `SMTPSecure` is not set to 'tls'.
+     * Be aware that in PHP >= 5.6 this requires that the server's certificates are valid.
+     * @var boolean
+     */
+    public $SMTPAutoTLS = true;
+
+    /**
+     * Whether to use SMTP authentication.
+     * Uses the Username and Password properties.
+     * @var boolean
+     * @see PHPMailer::$Username
+     * @see PHPMailer::$Password
+     */
+    public $SMTPAuth = false;
+
+    /**
+     * Options array passed to stream_context_create when connecting via SMTP.
+     * @var array
+     */
+    public $SMTPOptions = array();
+
+    /**
+     * SMTP username.
+     * @var string
+     */
+    public $Username = '';
+
+    /**
+     * SMTP password.
+     * @var string
+     */
+    public $Password = '';
+
+    /**
+     * SMTP auth type.
+     * Options are CRAM-MD5, LOGIN, PLAIN, NTLM, XOAUTH2, attempted in that order if not specified
+     * @var string
+     */
+    public $AuthType = '';
+
+    /**
+     * SMTP realm.
+     * Used for NTLM auth
+     * @var string
+     */
+    public $Realm = '';
+
+    /**
+     * SMTP workstation.
+     * Used for NTLM auth
+     * @var string
+     */
+    public $Workstation = '';
+
+    /**
+     * The SMTP server timeout in seconds.
+     * Default of 5 minutes (300sec) is from RFC2821 section 4.5.3.2
+     * @var integer
+     */
+    public $Timeout = 300;
+
+    /**
+     * SMTP class debug output mode.
+     * Debug output level.
+     * Options:
+     * * `0` No output
+     * * `1` Commands
+     * * `2` Data and commands
+     * * `3` As 2 plus connection status
+     * * `4` Low-level data output
+     * @var integer
+     * @see SMTP::$do_debug
+     */
+    public $SMTPDebug = 0;
+
+    /**
+     * How to handle debug output.
+     * Options:
+     * * `echo` Output plain-text as-is, appropriate for CLI
+     * * `html` Output escaped, line breaks converted to `<br>`, appropriate for browser output
+     * * `error_log` Output to error log as configured in php.ini
+     *
+     * Alternatively, you can provide a callable expecting two params: a message string and the debug level:
+     * <code>
+     * $mail->Debugoutput = function($str, $level) {echo "debug level $level; message: $str";};
+     * </code>
+     * @var string|callable
+     * @see SMTP::$Debugoutput
+     */
+    public $Debugoutput = 'echo';
+
+    /**
+     * Whether to keep SMTP connection open after each message.
+     * If this is set to true then to close the connection
+     * requires an explicit call to smtpClose().
+     * @var boolean
+     */
+    public $SMTPKeepAlive = false;
+
+    /**
+     * Whether to split multiple to addresses into multiple messages
+     * or send them all in one message.
+     * Only supported in `mail` and `sendmail` transports, not in SMTP.
+     * @var boolean
+     */
+    public $SingleTo = false;
+
+    /**
+     * Storage for addresses when SingleTo is enabled.
+     * @var array
+     * @TODO This should really not be public
+     */
+    public $SingleToArray = array();
+
+    /**
+     * Whether to generate VERP addresses on send.
+     * Only applicable when sending via SMTP.
+     * @link https://en.wikipedia.org/wiki/Variable_envelope_return_path
+     * @link http://www.postfix.org/VERP_README.html Postfix VERP info
+     * @var boolean
+     */
+    public $do_verp = false;
+
+    /**
+     * Whether to allow sending messages with an empty body.
+     * @var boolean
+     */
+    public $AllowEmpty = false;
+
+    /**
+     * The default line ending.
+     * @note The default remains "\n". We force CRLF where we know
+     *        it must be used via self::CRLF.
+     * @var string
+     */
+    public $LE = "\n";
+
+    /**
+     * DKIM selector.
+     * @var string
+     */
+    public $DKIM_selector = '';
+
+    /**
+     * DKIM Identity.
+     * Usually the email address used as the source of the email.
+     * @var string
+     */
+    public $DKIM_identity = '';
+
+    /**
+     * DKIM passphrase.
+     * Used if your key is encrypted.
+     * @var string
+     */
+    public $DKIM_passphrase = '';
+
+    /**
+     * DKIM signing domain name.
+     * @example 'example.com'
+     * @var string
+     */
+    public $DKIM_domain = '';
+
+    /**
+     * DKIM private key file path.
+     * @var string
+     */
+    public $DKIM_private = '';
+
+    /**
+     * DKIM private key string.
+     * If set, takes precedence over `$DKIM_private`.
+     * @var string
+     */
+    public $DKIM_private_string = '';
+
+    /**
+     * Callback Action function name.
+     *
+     * The function that handles the result of the send email action.
+     * It is called out by send() for each email sent.
+     *
+     * Value can be any php callable: http://www.php.net/is_callable
+     *
+     * Parameters:
+     *   boolean $result        result of the send action
+     *   string  $to            email address of the recipient
+     *   string  $cc            cc email addresses
+     *   string  $bcc           bcc email addresses
+     *   string  $subject       the subject
+     *   string  $body          the email body
+     *   string  $from          email address of sender
+     * @var string
+     */
+    public $action_function = '';
+
+    /**
+     * What to put in the X-Mailer header.
+     * Options: An empty string for PHPMailer default, whitespace for none, or a string to use
+     * @var string
+     */
+    public $XMailer = '';
+
+    /**
+     * Which validator to use by default when validating email addresses.
+     * May be a callable to inject your own validator, but there are several built-in validators.
+     * @see PHPMailer::validateAddress()
+     * @var string|callable
+     * @static
+     */
+    public static $validator = 'auto';
+
+    /**
+     * An instance of the SMTP sender class.
+     * @var SMTP
+     * @access protected
+     */
+    protected $smtp = null;
+
+    /**
+     * The array of 'to' names and addresses.
+     * @var array
+     * @access protected
+     */
+    protected $to = array();
+
+    /**
+     * The array of 'cc' names and addresses.
+     * @var array
+     * @access protected
+     */
+    protected $cc = array();
+
+    /**
+     * The array of 'bcc' names and addresses.
+     * @var array
+     * @access protected
+     */
+    protected $bcc = array();
+
+    /**
+     * The array of reply-to names and addresses.
+     * @var array
+     * @access protected
+     */
+    protected $ReplyTo = array();
+
+    /**
+     * An array of all kinds of addresses.
+     * Includes all of $to, $cc, $bcc
+     * @var array
+     * @access protected
+     * @see PHPMailer::$to @see PHPMailer::$cc @see PHPMailer::$bcc
+     */
+    protected $all_recipients = array();
+
+    /**
+     * An array of names and addresses queued for validation.
+     * In send(), valid and non duplicate entries are moved to $all_recipients
+     * and one of $to, $cc, or $bcc.
+     * This array is used only for addresses with IDN.
+     * @var array
+     * @access protected
+     * @see PHPMailer::$to @see PHPMailer::$cc @see PHPMailer::$bcc
+     * @see PHPMailer::$all_recipients
+     */
+    protected $RecipientsQueue = array();
+
+    /**
+     * An array of reply-to names and addresses queued for validation.
+     * In send(), valid and non duplicate entries are moved to $ReplyTo.
+     * This array is used only for addresses with IDN.
+     * @var array
+     * @access protected
+     * @see PHPMailer::$ReplyTo
+     */
+    protected $ReplyToQueue = array();
+
+    /**
+     * The array of attachments.
+     * @var array
+     * @access protected
+     */
+    protected $attachment = array();
+
+    /**
+     * The array of custom headers.
+     * @var array
+     * @access protected
+     */
+    protected $CustomHeader = array();
+
+    /**
+     * The most recent Message-ID (including angular brackets).
+     * @var string
+     * @access protected
+     */
+    protected $lastMessageID = '';
+
+    /**
+     * The message's MIME type.
+     * @var string
+     * @access protected
+     */
+    protected $message_type = '';
+
+    /**
+     * The array of MIME boundary strings.
+     * @var array
+     * @access protected
+     */
+    protected $boundary = array();
+
+    /**
+     * The array of available languages.
+     * @var array
+     * @access protected
+     */
+    protected $language = array();
+
+    /**
+     * The number of errors encountered.
+     * @var integer
+     * @access protected
+     */
+    protected $error_count = 0;
+
+    /**
+     * The S/MIME certificate file path.
+     * @var string
+     * @access protected
+     */
+    protected $sign_cert_file = '';
+
+    /**
+     * The S/MIME key file path.
+     * @var string
+     * @access protected
+     */
+    protected $sign_key_file = '';
+
+    /**
+     * The optional S/MIME extra certificates ("CA Chain") file path.
+     * @var string
+     * @access protected
+     */
+    protected $sign_extracerts_file = '';
+
+    /**
+     * The S/MIME password for the key.
+     * Used only if the key is encrypted.
+     * @var string
+     * @access protected
+     */
+    protected $sign_key_pass = '';
+
+    /**
+     * Whether to throw exceptions for errors.
+     * @var boolean
+     * @access protected
+     */
+    protected $exceptions = false;
+
+    /**
+     * Unique ID used for message ID and boundaries.
+     * @var string
+     * @access protected
+     */
+    protected $uniqueid = '';
+
+    /**
+     * Error severity: message only, continue processing.
+     */
+    const STOP_MESSAGE = 0;
+
+    /**
+     * Error severity: message, likely ok to continue processing.
+     */
+    const STOP_CONTINUE = 1;
+
+    /**
+     * Error severity: message, plus full stop, critical error reached.
+     */
+    const STOP_CRITICAL = 2;
+
+    /**
+     * SMTP RFC standard line ending.
+     */
+    const CRLF = "\r\n";
+
+    /**
+     * The maximum line length allowed by RFC 2822 section 2.1.1
+     * @var integer
+     */
+    const MAX_LINE_LENGTH = 998;
+
+    /**
+     * Constructor.
+     * @param boolean $exceptions Should we throw external exceptions?
+     */
+    public function __construct($exceptions = null)
+    {
+        if ($exceptions !== null) {
+            $this->exceptions = (boolean)$exceptions;
+        }
+    }
+
+    /**
+     * Destructor.
+     */
+    public function __destruct()
+    {
+        //Close any open SMTP connection nicely
+        $this->smtpClose();
+    }
+
+    /**
+     * Call mail() in a safe_mode-aware fashion.
+     * Also, unless sendmail_path points to sendmail (or something that
+     * claims to be sendmail), don't pass params (not a perfect fix,
+     * but it will do)
+     * @param string $to To
+     * @param string $subject Subject
+     * @param string $body Message Body
+     * @param string $header Additional Header(s)
+     * @param string $params Params
+     * @access private
+     * @return boolean
+     */
+    private function mailPassthru($to, $subject, $body, $header, $params)
+    {
+        //Check overloading of mail function to avoid double-encoding
+        if (ini_get('mbstring.func_overload') & 1) {
+            $subject = $this->secureHeader($subject);
+        } else {
+            $subject = $this->encodeHeader($this->secureHeader($subject));
+        }
+
+        //Can't use additional_parameters in safe_mode, calling mail() with null params breaks
+        //@link http://php.net/manual/en/function.mail.php
+        if (ini_get('safe_mode') or !$this->UseSendmailOptions or is_null($params)) {
+            $result = @mail($to, $subject, $body, $header);
+        } else {
+            $result = @mail($to, $subject, $body, $header, $params);
+        }
+        return $result;
+    }
+    /**
+     * Output debugging info via user-defined method.
+     * Only generates output if SMTP debug output is enabled (@see SMTP::$do_debug).
+     * @see PHPMailer::$Debugoutput
+     * @see PHPMailer::$SMTPDebug
+     * @param string $str
+     */
+    protected function edebug($str)
+    {
+        if ($this->SMTPDebug <= 0) {
+            return;
+        }
+        //Avoid clash with built-in function names
+        if (!in_array($this->Debugoutput, array('error_log', 'html', 'echo')) and is_callable($this->Debugoutput)) {
+            call_user_func($this->Debugoutput, $str, $this->SMTPDebug);
+            return;
+        }
+        switch ($this->Debugoutput) {
+            case 'error_log':
+                //Don't output, just log
+                error_log($str);
+                break;
+            case 'html':
+                //Cleans up output a bit for a better looking, HTML-safe output
+                echo htmlentities(
+                    preg_replace('/[\r\n]+/', '', $str),
+                    ENT_QUOTES,
+                    'UTF-8'
+                )
+                . "<br>\n";
+                break;
+            case 'echo':
+            default:
+                //Normalize line breaks
+                $str = preg_replace('/\r\n?/ms', "\n", $str);
+                echo gmdate('Y-m-d H:i:s') . "\t" . str_replace(
+                    "\n",
+                    "\n                   \t                  ",
+                    trim($str)
+                ) . "\n";
+        }
+    }
+
+    /**
+     * Sets message type to HTML or plain.
+     * @param boolean $isHtml True for HTML mode.
+     * @return void
+     */
+    public function isHTML($isHtml = true)
+    {
+        if ($isHtml) {
+            $this->ContentType = 'text/html';
+        } else {
+            $this->ContentType = 'text/plain';
+        }
+    }
+
+    /**
+     * Send messages using SMTP.
+     * @return void
+     */
+    public function isSMTP()
+    {
+        $this->Mailer = 'smtp';
+    }
+
+    /**
+     * Send messages using PHP's mail() function.
+     * @return void
+     */
+    public function isMail()
+    {
+        $this->Mailer = 'mail';
+    }
+
+    /**
+     * Send messages using $Sendmail.
+     * @return void
+     */
+    public function isSendmail()
+    {
+        $ini_sendmail_path = ini_get('sendmail_path');
+
+        if (!stristr($ini_sendmail_path, 'sendmail')) {
+            $this->Sendmail = '/usr/sbin/sendmail';
+        } else {
+            $this->Sendmail = $ini_sendmail_path;
+        }
+        $this->Mailer = 'sendmail';
+    }
+
+    /**
+     * Send messages using qmail.
+     * @return void
+     */
+    public function isQmail()
+    {
+        $ini_sendmail_path = ini_get('sendmail_path');
+
+        if (!stristr($ini_sendmail_path, 'qmail')) {
+            $this->Sendmail = '/var/qmail/bin/qmail-inject';
+        } else {
+            $this->Sendmail = $ini_sendmail_path;
+        }
+        $this->Mailer = 'qmail';
+    }
+
+    /**
+     * Add a "To" address.
+     * @param string $address The email address to send to
+     * @param string $name
+     * @return boolean true on success, false if address already used or invalid in some way
+     */
+    public function addAddress($address, $name = '')
+    {
+        return $this->addOrEnqueueAnAddress('to', $address, $name);
+    }
+
+    /**
+     * Add a "CC" address.
+     * @note: This function works with the SMTP mailer on win32, not with the "mail" mailer.
+     * @param string $address The email address to send to
+     * @param string $name
+     * @return boolean true on success, false if address already used or invalid in some way
+     */
+    public function addCC($address, $name = '')
+    {
+        return $this->addOrEnqueueAnAddress('cc', $address, $name);
+    }
+
+    /**
+     * Add a "BCC" address.
+     * @note: This function works with the SMTP mailer on win32, not with the "mail" mailer.
+     * @param string $address The email address to send to
+     * @param string $name
+     * @return boolean true on success, false if address already used or invalid in some way
+     */
+    public function addBCC($address, $name = '')
+    {
+        return $this->addOrEnqueueAnAddress('bcc', $address, $name);
+    }
+
+    /**
+     * Add a "Reply-To" address.
+     * @param string $address The email address to reply to
+     * @param string $name
+     * @return boolean true on success, false if address already used or invalid in some way
+     */
+    public function addReplyTo($address, $name = '')
+    {
+        return $this->addOrEnqueueAnAddress('Reply-To', $address, $name);
+    }
+
+    /**
+     * Add an address to one of the recipient arrays or to the ReplyTo array. Because PHPMailer
+     * can't validate addresses with an IDN without knowing the PHPMailer::$CharSet (that can still
+     * be modified after calling this function), addition of such addresses is delayed until send().
+     * Addresses that have been added already return false, but do not throw exceptions.
+     * @param string $kind One of 'to', 'cc', 'bcc', or 'ReplyTo'
+     * @param string $address The email address to send, resp. to reply to
+     * @param string $name
+     * @throws phpmailerException
+     * @return boolean true on success, false if address already used or invalid in some way
+     * @access protected
+     */
+    protected function addOrEnqueueAnAddress($kind, $address, $name)
+    {
+        $address = trim($address);
+        $name = trim(preg_replace('/[\r\n]+/', '', $name)); //Strip breaks and trim
+        if (($pos = strrpos($address, '@')) === false) {
+            // At-sign is misssing.
+            $error_message = $this->lang('invalid_address') . " (addAnAddress $kind): $address";
+            $this->setError($error_message);
+            $this->edebug($error_message);
+            if ($this->exceptions) {
+                throw new phpmailerException($error_message);
+            }
+            return false;
+        }
+        $params = array($kind, $address, $name);
+        // Enqueue addresses with IDN until we know the PHPMailer::$CharSet.
+        if ($this->has8bitChars(substr($address, ++$pos)) and $this->idnSupported()) {
+            if ($kind != 'Reply-To') {
+                if (!array_key_exists($address, $this->RecipientsQueue)) {
+                    $this->RecipientsQueue[$address] = $params;
+                    return true;
+                }
+            } else {
+                if (!array_key_exists($address, $this->ReplyToQueue)) {
+                    $this->ReplyToQueue[$address] = $params;
+                    return true;
+                }
+            }
+            return false;
+        }
+        // Immediately add standard addresses without IDN.
+        return call_user_func_array(array($this, 'addAnAddress'), $params);
+    }
+
+    /**
+     * Add an address to one of the recipient arrays or to the ReplyTo array.
+     * Addresses that have been added already return false, but do not throw exceptions.
+     * @param string $kind One of 'to', 'cc', 'bcc', or 'ReplyTo'
+     * @param string $address The email address to send, resp. to reply to
+     * @param string $name
+     * @throws phpmailerException
+     * @return boolean true on success, false if address already used or invalid in some way
+     * @access protected
+     */
+    protected function addAnAddress($kind, $address, $name = '')
+    {
+        if (!in_array($kind, array('to', 'cc', 'bcc', 'Reply-To'))) {
+            $error_message = $this->lang('Invalid recipient kind: ') . $kind;
+            $this->setError($error_message);
+            $this->edebug($error_message);
+            if ($this->exceptions) {
+                throw new phpmailerException($error_message);
+            }
+            return false;
+        }
+        if (!$this->validateAddress($address)) {
+            $error_message = $this->lang('invalid_address') . " (addAnAddress $kind): $address";
+            $this->setError($error_message);
+            $this->edebug($error_message);
+            if ($this->exceptions) {
+                throw new phpmailerException($error_message);
+            }
+            return false;
+        }
+        if ($kind != 'Reply-To') {
+            if (!array_key_exists(strtolower($address), $this->all_recipients)) {
+                array_push($this->$kind, array($address, $name));
+                $this->all_recipients[strtolower($address)] = true;
+                return true;
+            }
+        } else {
+            if (!array_key_exists(strtolower($address), $this->ReplyTo)) {
+                $this->ReplyTo[strtolower($address)] = array($address, $name);
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Parse and validate a string containing one or more RFC822-style comma-separated email addresses
+     * of the form "display name <address>" into an array of name/address pairs.
+     * Uses the imap_rfc822_parse_adrlist function if the IMAP extension is available.
+     * Note that quotes in the name part are removed.
+     * @param string $addrstr The address list string
+     * @param bool $useimap Whether to use the IMAP extension to parse the list
+     * @return array
+     * @link http://www.andrew.cmu.edu/user/agreen1/testing/mrbs/web/Mail/RFC822.php A more careful implementation
+     */
+    public function parseAddresses($addrstr, $useimap = true)
+    {
+        $addresses = array();
+        if ($useimap and function_exists('imap_rfc822_parse_adrlist')) {
+            //Use this built-in parser if it's available
+            $list = imap_rfc822_parse_adrlist($addrstr, '');
+            foreach ($list as $address) {
+                if ($address->host != '.SYNTAX-ERROR.') {
+                    if ($this->validateAddress($address->mailbox . '@' . $address->host)) {
+                        $addresses[] = array(
+                            'name' => (property_exists($address, 'personal') ? $address->personal : ''),
+                            'address' => $address->mailbox . '@' . $address->host
+                        );
+                    }
+                }
+            }
+        } else {
+            //Use this simpler parser
+            $list = explode(',', $addrstr);
+            foreach ($list as $address) {
+                $address = trim($address);
+                //Is there a separate name part?
+                if (strpos($address, '<') === false) {
+                    //No separate name, just use the whole thing
+                    if ($this->validateAddress($address)) {
+                        $addresses[] = array(
+                            'name' => '',
+                            'address' => $address
+                        );
+                    }
+                } else {
+                    list($name, $email) = explode('<', $address);
+                    $email = trim(str_replace('>', '', $email));
+                    if ($this->validateAddress($email)) {
+                        $addresses[] = array(
+                            'name' => trim(str_replace(array('"', "'"), '', $name)),
+                            'address' => $email
+                        );
+                    }
+                }
+            }
+        }
+        return $addresses;
+    }
+
+    /**
+     * Set the From and FromName properties.
+     * @param string $address
+     * @param string $name
+     * @param boolean $auto Whether to also set the Sender address, defaults to true
+     * @throws phpmailerException
+     * @return boolean
+     */
+    public function setFrom($address, $name = '', $auto = true)
+    {
+        $address = trim($address);
+        $name = trim(preg_replace('/[\r\n]+/', '', $name)); //Strip breaks and trim
+        // Don't validate now addresses with IDN. Will be done in send().
+        if (($pos = strrpos($address, '@')) === false or
+            (!$this->has8bitChars(substr($address, ++$pos)) or !$this->idnSupported()) and
+            !$this->validateAddress($address)) {
+            $error_message = $this->lang('invalid_address') . " (setFrom) $address";
+            $this->setError($error_message);
+            $this->edebug($error_message);
+            if ($this->exceptions) {
+                throw new phpmailerException($error_message);
+            }
+            return false;
+        }
+        $this->From = $address;
+        $this->FromName = $name;
+        if ($auto) {
+            if (empty($this->Sender)) {
+                $this->Sender = $address;
+            }
+        }
+        return true;
+    }
+
+    /**
+     * Return the Message-ID header of the last email.
+     * Technically this is the value from the last time the headers were created,
+     * but it's also the message ID of the last sent message except in
+     * pathological cases.
+     * @return string
+     */
+    public function getLastMessageID()
+    {
+        return $this->lastMessageID;
+    }
+
+    /**
+     * Check that a string looks like an email address.
+     * @param string $address The email address to check
+     * @param string|callable $patternselect A selector for the validation pattern to use :
+     * * `auto` Pick best pattern automatically;
+     * * `pcre8` Use the squiloople.com pattern, requires PCRE > 8.0, PHP >= 5.3.2, 5.2.14;
+     * * `pcre` Use old PCRE implementation;
+     * * `php` Use PHP built-in FILTER_VALIDATE_EMAIL;
+     * * `html5` Use the pattern given by the HTML5 spec for 'email' type form input elements.
+     * * `noregex` Don't use a regex: super fast, really dumb.
+     * Alternatively you may pass in a callable to inject your own validator, for example:
+     * PHPMailer::validateAddress('user@example.com', function($address) {
+     *     return (strpos($address, '@') !== false);
+     * });
+     * You can also set the PHPMailer::$validator static to a callable, allowing built-in methods to use your validator.
+     * @return boolean
+     * @static
+     * @access public
+     */
+    public static function validateAddress($address, $patternselect = null)
+    {
+        if (is_null($patternselect)) {
+            $patternselect = self::$validator;
+        }
+        if (is_callable($patternselect)) {
+            return call_user_func($patternselect, $address);
+        }
+        //Reject line breaks in addresses; it's valid RFC5322, but not RFC5321
+        if (strpos($address, "\n") !== false or strpos($address, "\r") !== false) {
+            return false;
+        }
+        if (!$patternselect or $patternselect == 'auto') {
+            //Check this constant first so it works when extension_loaded() is disabled by safe mode
+            //Constant was added in PHP 5.2.4
+            if (defined('PCRE_VERSION')) {
+                //This pattern can get stuck in a recursive loop in PCRE <= 8.0.2
+                if (version_compare(PCRE_VERSION, '8.0.3') >= 0) {
+                    $patternselect = 'pcre8';
+                } else {
+                    $patternselect = 'pcre';
+                }
+            } elseif (function_exists('extension_loaded') and extension_loaded('pcre')) {
+                //Fall back to older PCRE
+                $patternselect = 'pcre';
+            } else {
+                //Filter_var appeared in PHP 5.2.0 and does not require the PCRE extension
+                if (version_compare(PHP_VERSION, '5.2.0') >= 0) {
+                    $patternselect = 'php';
+                } else {
+                    $patternselect = 'noregex';
+                }
+            }
+        }
+        switch ($patternselect) {
+            case 'pcre8':
+                /**
+                 * Uses the same RFC5322 regex on which FILTER_VALIDATE_EMAIL is based, but allows dotless domains.
+                 * @link http://squiloople.com/2009/12/20/email-address-validation/
+                 * @copyright 2009-2010 Michael Rushton
+                 * Feel free to use and redistribute this code. But please keep this copyright notice.
+                 */
+                return (boolean)preg_match(
+                    '/^(?!(?>(?1)"?(?>\\\[ -~]|[^"])"?(?1)){255,})(?!(?>(?1)"?(?>\\\[ -~]|[^"])"?(?1)){65,}@)' .
+                    '((?>(?>(?>((?>(?>(?>\x0D\x0A)?[\t ])+|(?>[\t ]*\x0D\x0A)?[\t ]+)?)(\((?>(?2)' .
+                    '(?>[\x01-\x08\x0B\x0C\x0E-\'*-\[\]-\x7F]|\\\[\x00-\x7F]|(?3)))*(?2)\)))+(?2))|(?2))?)' .
+                    '([!#-\'*+\/-9=?^-~-]+|"(?>(?2)(?>[\x01-\x08\x0B\x0C\x0E-!#-\[\]-\x7F]|\\\[\x00-\x7F]))*' .
+                    '(?2)")(?>(?1)\.(?1)(?4))*(?1)@(?!(?1)[a-z0-9-]{64,})(?1)(?>([a-z0-9](?>[a-z0-9-]*[a-z0-9])?)' .
+                    '(?>(?1)\.(?!(?1)[a-z0-9-]{64,})(?1)(?5)){0,126}|\[(?:(?>IPv6:(?>([a-f0-9]{1,4})(?>:(?6)){7}' .
+                    '|(?!(?:.*[a-f0-9][:\]]){8,})((?6)(?>:(?6)){0,6})?::(?7)?))|(?>(?>IPv6:(?>(?6)(?>:(?6)){5}:' .
+                    '|(?!(?:.*[a-f0-9]:){6,})(?8)?::(?>((?6)(?>:(?6)){0,4}):)?))?(25[0-5]|2[0-4][0-9]|1[0-9]{2}' .
+                    '|[1-9]?[0-9])(?>\.(?9)){3}))\])(?1)$/isD',
+                    $address
+                );
+            case 'pcre':
+                //An older regex that doesn't need a recent PCRE
+                return (boolean)preg_match(
+                    '/^(?!(?>"?(?>\\\[ -~]|[^"])"?){255,})(?!(?>"?(?>\\\[ -~]|[^"])"?){65,}@)(?>' .
+                    '[!#-\'*+\/-9=?^-~-]+|"(?>(?>[\x01-\x08\x0B\x0C\x0E-!#-\[\]-\x7F]|\\\[\x00-\xFF]))*")' .
+                    '(?>\.(?>[!#-\'*+\/-9=?^-~-]+|"(?>(?>[\x01-\x08\x0B\x0C\x0E-!#-\[\]-\x7F]|\\\[\x00-\xFF]))*"))*' .
+                    '@(?>(?![a-z0-9-]{64,})(?>[a-z0-9](?>[a-z0-9-]*[a-z0-9])?)(?>\.(?![a-z0-9-]{64,})' .
+                    '(?>[a-z0-9](?>[a-z0-9-]*[a-z0-9])?)){0,126}|\[(?:(?>IPv6:(?>(?>[a-f0-9]{1,4})(?>:' .
+                    '[a-f0-9]{1,4}){7}|(?!(?:.*[a-f0-9][:\]]){8,})(?>[a-f0-9]{1,4}(?>:[a-f0-9]{1,4}){0,6})?' .
+                    '::(?>[a-f0-9]{1,4}(?>:[a-f0-9]{1,4}){0,6})?))|(?>(?>IPv6:(?>[a-f0-9]{1,4}(?>:' .
+                    '[a-f0-9]{1,4}){5}:|(?!(?:.*[a-f0-9]:){6,})(?>[a-f0-9]{1,4}(?>:[a-f0-9]{1,4}){0,4})?' .
+                    '::(?>(?:[a-f0-9]{1,4}(?>:[a-f0-9]{1,4}){0,4}):)?))?(?>25[0-5]|2[0-4][0-9]|1[0-9]{2}' .
+                    '|[1-9]?[0-9])(?>\.(?>25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])){3}))\])$/isD',
+                    $address
+                );
+            case 'html5':
+                /**
+                 * This is the pattern used in the HTML5 spec for validation of 'email' type form input elements.
+                 * @link http://www.whatwg.org/specs/web-apps/current-work/#e-mail-state-(type=email)
+                 */
+                return (boolean)preg_match(
+                    '/^[a-zA-Z0-9.!#$%&\'*+\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}' .
+                    '[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/sD',
+                    $address
+                );
+            case 'noregex':
+                //No PCRE! Do something _very_ approximate!
+                //Check the address is 3 chars or longer and contains an @ that's not the first or last char
+                return (strlen($address) >= 3
+                    and strpos($address, '@') >= 1
+                    and strpos($address, '@') != strlen($address) - 1);
+            case 'php':
+            default:
+                return (boolean)filter_var($address, FILTER_VALIDATE_EMAIL);
+        }
+    }
+
+    /**
+     * Tells whether IDNs (Internationalized Domain Names) are supported or not. This requires the
+     * "intl" and "mbstring" PHP extensions.
+     * @return bool "true" if required functions for IDN support are present
+     */
+    public function idnSupported()
+    {
+        // @TODO: Write our own "idn_to_ascii" function for PHP <= 5.2.
+        return function_exists('idn_to_ascii') and function_exists('mb_convert_encoding');
+    }
+
+    /**
+     * Converts IDN in given email address to its ASCII form, also known as punycode, if possible.
+     * Important: Address must be passed in same encoding as currently set in PHPMailer::$CharSet.
+     * This function silently returns unmodified address if:
+     * - No conversion is necessary (i.e. domain name is not an IDN, or is already in ASCII form)
+     * - Conversion to punycode is impossible (e.g. required PHP functions are not available)
+     *   or fails for any reason (e.g. domain has characters not allowed in an IDN)
+     * @see PHPMailer::$CharSet
+     * @param string $address The email address to convert
+     * @return string The encoded address in ASCII form
+     */
+    public function punyencodeAddress($address)
+    {
+        // Verify we have required functions, CharSet, and at-sign.
+        if ($this->idnSupported() and
+            !empty($this->CharSet) and
+            ($pos = strrpos($address, '@')) !== false) {
+            $domain = substr($address, ++$pos);
+            // Verify CharSet string is a valid one, and domain properly encoded in this CharSet.
+            if ($this->has8bitChars($domain) and @mb_check_encoding($domain, $this->CharSet)) {
+                $domain = mb_convert_encoding($domain, 'UTF-8', $this->CharSet);
+                if (($punycode = defined('INTL_IDNA_VARIANT_UTS46') ?
+                    idn_to_ascii($domain, 0, INTL_IDNA_VARIANT_UTS46) :
+                    idn_to_ascii($domain)) !== false) {
+                    return substr($address, 0, $pos) . $punycode;
+                }
+            }
+        }
+        return $address;
+    }
+
+    /**
+     * Create a message and send it.
+     * Uses the sending method specified by $Mailer.
+     * @throws phpmailerException
+     * @return boolean false on error - See the ErrorInfo property for details of the error.
+     */
+    public function send()
+    {
+        try {
+            if (!$this->preSend()) {
+                return false;
+            }
+            return $this->postSend();
+        } catch (phpmailerException $exc) {
+            $this->mailHeader = '';
+            $this->setError($exc->getMessage());
+            if ($this->exceptions) {
+                throw $exc;
+            }
+            return false;
+        }
+    }
+
+    /**
+     * Prepare a message for sending.
+     * @throws phpmailerException
+     * @return boolean
+     */
+    public function preSend()
+    {
+        try {
+            $this->error_count = 0; // Reset errors
+            $this->mailHeader = '';
+
+            // Dequeue recipient and Reply-To addresses with IDN
+            foreach (array_merge($this->RecipientsQueue, $this->ReplyToQueue) as $params) {
+                $params[1] = $this->punyencodeAddress($params[1]);
+                call_user_func_array(array($this, 'addAnAddress'), $params);
+            }
+            if ((count($this->to) + count($this->cc) + count($this->bcc)) < 1) {
+                throw new phpmailerException($this->lang('provide_address'), self::STOP_CRITICAL);
+            }
+
+            // Validate From, Sender, and ConfirmReadingTo addresses
+            foreach (array('From', 'Sender', 'ConfirmReadingTo') as $address_kind) {
+                $this->$address_kind = trim($this->$address_kind);
+                if (empty($this->$address_kind)) {
+                    continue;
+                }
+                $this->$address_kind = $this->punyencodeAddress($this->$address_kind);
+                if (!$this->validateAddress($this->$address_kind)) {
+                    $error_message = $this->lang('invalid_address') . ' (punyEncode) ' . $this->$address_kind;
+                    $this->setError($error_message);
+                    $this->edebug($error_message);
+                    if ($this->exceptions) {
+                        throw new phpmailerException($error_message);
+                    }
+                    return false;
+                }
+            }
+
+            // Set whether the message is multipart/alternative
+            if ($this->alternativeExists()) {
+                $this->ContentType = 'multipart/alternative';
+            }
+
+            $this->setMessageType();
+            // Refuse to send an empty message unless we are specifically allowing it
+            if (!$this->AllowEmpty and empty($this->Body)) {
+                throw new phpmailerException($this->lang('empty_message'), self::STOP_CRITICAL);
+            }
+
+            // Create body before headers in case body makes changes to headers (e.g. altering transfer encoding)
+            $this->MIMEHeader = '';
+            $this->MIMEBody = $this->createBody();
+            // createBody may have added some headers, so retain them
+            $tempheaders = $this->MIMEHeader;
+            $this->MIMEHeader = $this->createHeader();
+            $this->MIMEHeader .= $tempheaders;
+
+            // To capture the complete message when using mail(), create
+            // an extra header list which createHeader() doesn't fold in
+            if ($this->Mailer == 'mail') {
+                if (count($this->to) > 0) {
+                    $this->mailHeader .= $this->addrAppend('To', $this->to);
+                } else {
+                    $this->mailHeader .= $this->headerLine('To', 'undisclosed-recipients:;');
+                }
+                $this->mailHeader .= $this->headerLine(
+                    'Subject',
+                    $this->encodeHeader($this->secureHeader(trim($this->Subject)))
+                );
+            }
+
+            // Sign with DKIM if enabled
+            if (!empty($this->DKIM_domain)
+                && !empty($this->DKIM_selector)
+                && (!empty($this->DKIM_private_string)
+                   || (!empty($this->DKIM_private) && file_exists($this->DKIM_private))
+                )
+            ) {
+                $header_dkim = $this->DKIM_Add(
+                    $this->MIMEHeader . $this->mailHeader,
+                    $this->encodeHeader($this->secureHeader($this->Subject)),
+                    $this->MIMEBody
+                );
+                $this->MIMEHeader = rtrim($this->MIMEHeader, "\r\n ") . self::CRLF .
+                    str_replace("\r\n", "\n", $header_dkim) . self::CRLF;
+            }
+            return true;
+        } catch (phpmailerException $exc) {
+            $this->setError($exc->getMessage());
+            if ($this->exceptions) {
+                throw $exc;
+            }
+            return false;
+        }
+    }
+
+    /**
+     * Actually send a message.
+     * Send the email via the selected mechanism
+     * @throws phpmailerException
+     * @return boolean
+     */
+    public function postSend()
+    {
+        try {
+            // Choose the mailer and send through it
+            switch ($this->Mailer) {
+                case 'sendmail':
+                case 'qmail':
+                    return $this->sendmailSend($this->MIMEHeader, $this->MIMEBody);
+                case 'smtp':
+                    return $this->smtpSend($this->MIMEHeader, $this->MIMEBody);
+                case 'mail':
+                    return $this->mailSend($this->MIMEHeader, $this->MIMEBody);
+                default:
+                    $sendMethod = $this->Mailer.'Send';
+                    if (method_exists($this, $sendMethod)) {
+                        return $this->$sendMethod($this->MIMEHeader, $this->MIMEBody);
+                    }
+
+                    return $this->mailSend($this->MIMEHeader, $this->MIMEBody);
+            }
+        } catch (phpmailerException $exc) {
+            $this->setError($exc->getMessage());
+            $this->edebug($exc->getMessage());
+            if ($this->exceptions) {
+                throw $exc;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Send mail using the $Sendmail program.
+     * @param string $header The message headers
+     * @param string $body The message body
+     * @see PHPMailer::$Sendmail
+     * @throws phpmailerException
+     * @access protected
+     * @return boolean
+     */
+    protected function sendmailSend($header, $body)
+    {
+        // CVE-2016-10033, CVE-2016-10045: Don't pass -f if characters will be escaped.
+        if (!empty($this->Sender) and self::isShellSafe($this->Sender)) {
+            if ($this->Mailer == 'qmail') {
+                $sendmailFmt = '%s -f%s';
+            } else {
+                $sendmailFmt = '%s -oi -f%s -t';
+            }
+        } else {
+            if ($this->Mailer == 'qmail') {
+                $sendmailFmt = '%s';
+            } else {
+                $sendmailFmt = '%s -oi -t';
+            }
+        }
+
+        // TODO: If possible, this should be changed to escapeshellarg.  Needs thorough testing.
+        $sendmail = sprintf($sendmailFmt, escapeshellcmd($this->Sendmail), $this->Sender);
+
+        if ($this->SingleTo) {
+            foreach ($this->SingleToArray as $toAddr) {
+                if (!@$mail = popen($sendmail, 'w')) {
+                    throw new phpmailerException($this->lang('execute') . $this->Sendmail, self::STOP_CRITICAL);
+                }
+                fputs($mail, 'To: ' . $toAddr . "\n");
+                fputs($mail, $header);
+                fputs($mail, $body);
+                $result = pclose($mail);
+                $this->doCallback(
+                    ($result == 0),
+                    array($toAddr),
+                    $this->cc,
+                    $this->bcc,
+                    $this->Subject,
+                    $body,
+                    $this->From
+                );
+                if ($result != 0) {
+                    throw new phpmailerException($this->lang('execute') . $this->Sendmail, self::STOP_CRITICAL);
+                }
+            }
+        } else {
+            if (!@$mail = popen($sendmail, 'w')) {
+                throw new phpmailerException($this->lang('execute') . $this->Sendmail, self::STOP_CRITICAL);
+            }
+            fputs($mail, $header);
+            fputs($mail, $body);
+            $result = pclose($mail);
+            $this->doCallback(
+                ($result == 0),
+                $this->to,
+                $this->cc,
+                $this->bcc,
+                $this->Subject,
+                $body,
+                $this->From
+            );
+            if ($result != 0) {
+                throw new phpmailerException($this->lang('execute') . $this->Sendmail, self::STOP_CRITICAL);
+            }
+        }
+        return true;
+    }
+
+    /**
+     * Fix CVE-2016-10033 and CVE-2016-10045 by disallowing potentially unsafe shell characters.
+     *
+     * Note that escapeshellarg and escapeshellcmd are inadequate for our purposes, especially on Windows.
+     * @param string $string The string to be validated
+     * @see https://github.com/PHPMailer/PHPMailer/issues/924 CVE-2016-10045 bug report
+     * @access protected
+     * @return boolean
+     */
+    protected static function isShellSafe($string)
+    {
+        // Future-proof
+        if (escapeshellcmd($string) !== $string
+            or !in_array(escapeshellarg($string), array("'$string'", "\"$string\""))
+        ) {
+            return false;
+        }
+
+        $length = strlen($string);
+
+        for ($i = 0; $i < $length; $i++) {
+            $c = $string[$i];
+
+            // All other characters have a special meaning in at least one common shell, including = and +.
+            // Full stop (.) has a special meaning in cmd.exe, but its impact should be negligible here.
+            // Note that this does permit non-Latin alphanumeric characters based on the current locale.
+            if (!ctype_alnum($c) && strpos('@_-.', $c) === false) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * Send mail using the PHP mail() function.
+     * @param string $header The message headers
+     * @param string $body The message body
+     * @link http://www.php.net/manual/en/book.mail.php
+     * @throws phpmailerException
+     * @access protected
+     * @return boolean
+     */
+    protected function mailSend($header, $body)
+    {
+        $toArr = array();
+        foreach ($this->to as $toaddr) {
+            $toArr[] = $this->addrFormat($toaddr);
+        }
+        $to = implode(', ', $toArr);
+
+        $params = null;
+        //This sets the SMTP envelope sender which gets turned into a return-path header by the receiver
+        if (!empty($this->Sender) and $this->validateAddress($this->Sender)) {
+            // CVE-2016-10033, CVE-2016-10045: Don't pass -f if characters will be escaped.
+            if (self::isShellSafe($this->Sender)) {
+                $params = sprintf('-f%s', $this->Sender);
+            }
+        }
+        if (!empty($this->Sender) and !ini_get('safe_mode') and $this->validateAddress($this->Sender)) {
+            $old_from = ini_get('sendmail_from');
+            ini_set('sendmail_from', $this->Sender);
+        }
+        $result = false;
+        if ($this->SingleTo and count($toArr) > 1) {
+            foreach ($toArr as $toAddr) {
+                $result = $this->mailPassthru($toAddr, $this->Subject, $body, $header, $params);
+                $this->doCallback($result, array($toAddr), $this->cc, $this->bcc, $this->Subject, $body, $this->From);
+            }
+        } else {
+            $result = $this->mailPassthru($to, $this->Subject, $body, $header, $params);
+            $this->doCallback($result, $this->to, $this->cc, $this->bcc, $this->Subject, $body, $this->From);
+        }
+        if (isset($old_from)) {
+            ini_set('sendmail_from', $old_from);
+        }
+        if (!$result) {
+            throw new phpmailerException($this->lang('instantiate'), self::STOP_CRITICAL);
+        }
+        return true;
+    }
+
+    /**
+     * Get an instance to use for SMTP operations.
+     * Override this function to load your own SMTP implementation
+     * @return SMTP
+     */
+    public function getSMTPInstance()
+    {
+        if (!is_object($this->smtp)) {
+            $this->smtp = new SMTP;
+        }
+        return $this->smtp;
+    }
+
+    /**
+     * Send mail via SMTP.
+     * Returns false if there is a bad MAIL FROM, RCPT, or DATA input.
+     * Uses the PHPMailerSMTP class by default.
+     * @see PHPMailer::getSMTPInstance() to use a different class.
+     * @param string $header The message headers
+     * @param string $body The message body
+     * @throws phpmailerException
+     * @uses SMTP
+     * @access protected
+     * @return boolean
+     */
+    protected function smtpSend($header, $body)
+    {
+        $bad_rcpt = array();
+        if (!$this->smtpConnect($this->SMTPOptions)) {
+            throw new phpmailerException($this->lang('smtp_connect_failed'), self::STOP_CRITICAL);
+        }
+        if (!empty($this->Sender) and $this->validateAddress($this->Sender)) {
+            $smtp_from = $this->Sender;
+        } else {
+            $smtp_from = $this->From;
+        }
+        if (!$this->smtp->mail($smtp_from)) {
+            $this->setError($this->lang('from_failed') . $smtp_from . ' : ' . implode(',', $this->smtp->getError()));
+            throw new phpmailerException($this->ErrorInfo, self::STOP_CRITICAL);
+        }
+
+        // Attempt to send to all recipients
+        foreach (array($this->to, $this->cc, $this->bcc) as $togroup) {
+            foreach ($togroup as $to) {
+                if (!$this->smtp->recipient($to[0])) {
+                    $error = $this->smtp->getError();
+                    $bad_rcpt[] = array('to' => $to[0], 'error' => $error['detail']);
+                    $isSent = false;
+                } else {
+                    $isSent = true;
+                }
+                $this->doCallback($isSent, array($to[0]), array(), array(), $this->Subject, $body, $this->From);
+            }
+        }
+
+        // Only send the DATA command if we have viable recipients
+        if ((count($this->all_recipients) > count($bad_rcpt)) and !$this->smtp->data($header . $body)) {
+            throw new phpmailerException($this->lang('data_not_accepted'), self::STOP_CRITICAL);
+        }
+        if ($this->SMTPKeepAlive) {
+            $this->smtp->reset();
+        } else {
+            $this->smtp->quit();
+            $this->smtp->close();
+        }
+        //Create error message for any bad addresses
+        if (count($bad_rcpt) > 0) {
+            $errstr = '';
+            foreach ($bad_rcpt as $bad) {
+                $errstr .= $bad['to'] . ': ' . $bad['error'];
+            }
+            throw new phpmailerException(
+                $this->lang('recipients_failed') . $errstr,
+                self::STOP_CONTINUE
+            );
+        }
+        return true;
+    }
+
+    /**
+     * Initiate a connection to an SMTP server.
+     * Returns false if the operation failed.
+     * @param array $options An array of options compatible with stream_context_create()
+     * @uses SMTP
+     * @access public
+     * @throws phpmailerException
+     * @return boolean
+     */
+    public function smtpConnect($options = null)
+    {
+        if (is_null($this->smtp)) {
+            $this->smtp = $this->getSMTPInstance();
+        }
+
+        //If no options are provided, use whatever is set in the instance
+        if (is_null($options)) {
+            $options = $this->SMTPOptions;
+        }
+
+        // Already connected?
+        if ($this->smtp->connected()) {
+            return true;
+        }
+
+        $this->smtp->setTimeout($this->Timeout);
+        $this->smtp->setDebugLevel($this->SMTPDebug);
+        $this->smtp->setDebugOutput($this->Debugoutput);
+        $this->smtp->setVerp($this->do_verp);
+        $hosts = explode(';', $this->Host);
+        $lastexception = null;
+
+        foreach ($hosts as $hostentry) {
+            $hostinfo = array();
+            if (!preg_match('/^((ssl|tls):\/\/)*([a-zA-Z0-9\.-]*):?([0-9]*)$/', trim($hostentry), $hostinfo)) {
+                // Not a valid host entry
+                continue;
+            }
+            // $hostinfo[2]: optional ssl or tls prefix
+            // $hostinfo[3]: the hostname
+            // $hostinfo[4]: optional port number
+            // The host string prefix can temporarily override the current setting for SMTPSecure
+            // If it's not specified, the default value is used
+            $prefix = '';
+            $secure = $this->SMTPSecure;
+            $tls = ($this->SMTPSecure == 'tls');
+            if ('ssl' == $hostinfo[2] or ('' == $hostinfo[2] and 'ssl' == $this->SMTPSecure)) {
+                $prefix = 'ssl://';
+                $tls = false; // Can't have SSL and TLS at the same time
+                $secure = 'ssl';
+            } elseif ($hostinfo[2] == 'tls') {
+                $tls = true;
+                // tls doesn't use a prefix
+                $secure = 'tls';
+            }
+            //Do we need the OpenSSL extension?
+            $sslext = defined('OPENSSL_ALGO_SHA1');
+            if ('tls' === $secure or 'ssl' === $secure) {
+                //Check for an OpenSSL constant rather than using extension_loaded, which is sometimes disabled
+                if (!$sslext) {
+                    throw new phpmailerException($this->lang('extension_missing').'openssl', self::STOP_CRITICAL);
+                }
+            }
+            $host = $hostinfo[3];
+            $port = $this->Port;
+            $tport = (integer)$hostinfo[4];
+            if ($tport > 0 and $tport < 65536) {
+                $port = $tport;
+            }
+            if ($this->smtp->connect($prefix . $host, $port, $this->Timeout, $options)) {
+                try {
+                    if ($this->Helo) {
+                        $hello = $this->Helo;
+                    } else {
+                        $hello = $this->serverHostname();
+                    }
+                    $this->smtp->hello($hello);
+                    //Automatically enable TLS encryption if:
+                    // * it's not disabled
+                    // * we have openssl extension
+                    // * we are not already using SSL
+                    // * the server offers STARTTLS
+                    if ($this->SMTPAutoTLS and $sslext and $secure != 'ssl' and $this->smtp->getServerExt('STARTTLS')) {
+                        $tls = true;
+                    }
+                    if ($tls) {
+                        if (!$this->smtp->startTLS()) {
+                            throw new phpmailerException($this->lang('connect_host'));
+                        }
+                        // We must resend EHLO after TLS negotiation
+                        $this->smtp->hello($hello);
+                    }
+                    if ($this->SMTPAuth) {
+                        if (!$this->smtp->authenticate(
+                            $this->Username,
+                            $this->Password,
+                            $this->AuthType,
+                            $this->Realm,
+                            $this->Workstation
+                        )
+                        ) {
+                            throw new phpmailerException($this->lang('authenticate'));
+                        }
+                    }
+                    return true;
+                } catch (phpmailerException $exc) {
+                    $lastexception = $exc;
+                    $this->edebug($exc->getMessage());
+                    // We must have connected, but then failed TLS or Auth, so close connection nicely
+                    $this->smtp->quit();
+                }
+            }
+        }
+        // If we get here, all connection attempts have failed, so close connection hard
+        $this->smtp->close();
+        // As we've caught all exceptions, just report whatever the last one was
+        if ($this->exceptions and !is_null($lastexception)) {
+            throw $lastexception;
+        }
+        return false;
+    }
+
+    /**
+     * Close the active SMTP session if one exists.
+     * @return void
+     */
+    public function smtpClose()
+    {
+        if (is_a($this->smtp, 'SMTP')) {
+            if ($this->smtp->connected()) {
+                $this->smtp->quit();
+                $this->smtp->close();
+            }
+        }
+    }
+
+    /**
+     * Set the language for error messages.
+     * Returns false if it cannot load the language file.
+     * The default language is English.
+     * @param string $langcode ISO 639-1 2-character language code (e.g. French is "fr")
+     * @param string $lang_path Path to the language file directory, with trailing separator (slash)
+     * @return boolean
+     * @access public
+     */
+    public function setLanguage($langcode = 'en', $lang_path = '')
+    {
+        // Backwards compatibility for renamed language codes
+        $renamed_langcodes = array(
+            'br' => 'pt_br',
+            'cz' => 'cs',
+            'dk' => 'da',
+            'no' => 'nb',
+            'se' => 'sv',
+        );
+
+        if (isset($renamed_langcodes[$langcode])) {
+            $langcode = $renamed_langcodes[$langcode];
+        }
+
+        // Define full set of translatable strings in English
+        $PHPMAILER_LANG = array(
+            'authenticate' => 'SMTP Error: Could not authenticate.',
+            'connect_host' => 'SMTP Error: Could not connect to SMTP host.',
+            'data_not_accepted' => 'SMTP Error: data not accepted.',
+            'empty_message' => 'Message body empty',
+            'encoding' => 'Unknown encoding: ',
+            'execute' => 'Could not execute: ',
+            'file_access' => 'Could not access file: ',
+            'file_open' => 'File Error: Could not open file: ',
+            'from_failed' => 'The following From address failed: ',
+            'instantiate' => 'Could not instantiate mail function.',
+            'invalid_address' => 'Invalid address: ',
+            'mailer_not_supported' => ' mailer is not supported.',
+            'provide_address' => 'You must provide at least one recipient email address.',
+            'recipients_failed' => 'SMTP Error: The following recipients failed: ',
+            'signing' => 'Signing Error: ',
+            'smtp_connect_failed' => 'SMTP connect() failed.',
+            'smtp_error' => 'SMTP server error: ',
+            'variable_set' => 'Cannot set or reset variable: ',
+            'extension_missing' => 'Extension missing: '
+        );
+        if (empty($lang_path)) {
+            // Calculate an absolute path so it can work if CWD is not here
+            $lang_path = dirname(__FILE__). DIRECTORY_SEPARATOR . 'language'. DIRECTORY_SEPARATOR;
+        }
+        //Validate $langcode
+        if (!preg_match('/^[a-z]{2}(?:_[a-zA-Z]{2})?$/', $langcode)) {
+            $langcode = 'en';
+        }
+        $foundlang = true;
+        $lang_file = $lang_path . 'phpmailer.lang-' . $langcode . '.php';
+        // There is no English translation file
+        if ($langcode != 'en') {
+            // Make sure language file path is readable
+            if (!is_readable($lang_file)) {
+                $foundlang = false;
+            } else {
+                // Overwrite language-specific strings.
+                // This way we'll never have missing translation keys.
+                $foundlang = include $lang_file;
+            }
+        }
+        $this->language = $PHPMAILER_LANG;
+        return (boolean)$foundlang; // Returns false if language not found
+    }
+
+    /**
+     * Get the array of strings for the current language.
+     * @return array
+     */
+    public function getTranslations()
+    {
+        return $this->language;
+    }
+
+    /**
+     * Create recipient headers.
+     * @access public
+     * @param string $type
+     * @param array $addr An array of recipient,
+     * where each recipient is a 2-element indexed array with element 0 containing an address
+     * and element 1 containing a name, like:
+     * array(array('joe@example.com', 'Joe User'), array('zoe@example.com', 'Zoe User'))
+     * @return string
+     */
+    public function addrAppend($type, $addr)
+    {
+        $addresses = array();
+        foreach ($addr as $address) {
+            $addresses[] = $this->addrFormat($address);
+        }
+        return $type . ': ' . implode(', ', $addresses) . $this->LE;
+    }
+
+    /**
+     * Format an address for use in a message header.
+     * @access public
+     * @param array $addr A 2-element indexed array, element 0 containing an address, element 1 containing a name
+     *      like array('joe@example.com', 'Joe User')
+     * @return string
+     */
+    public function addrFormat($addr)
+    {
+        if (empty($addr[1])) { // No name provided
+            return $this->secureHeader($addr[0]);
+        } else {
+            return $this->encodeHeader($this->secureHeader($addr[1]), 'phrase') . ' <' . $this->secureHeader(
+                $addr[0]
+            ) . '>';
+        }
+    }
+
+    /**
+     * Word-wrap message.
+     * For use with mailers that do not automatically perform wrapping
+     * and for quoted-printable encoded messages.
+     * Original written by philippe.
+     * @param string $message The message to wrap
+     * @param integer $length The line length to wrap to
+     * @param boolean $qp_mode Whether to run in Quoted-Printable mode
+     * @access public
+     * @return string
+     */
+    public function wrapText($message, $length, $qp_mode = false)
+    {
+        if ($qp_mode) {
+            $soft_break = sprintf(' =%s', $this->LE);
+        } else {
+            $soft_break = $this->LE;
+        }
+        // If utf-8 encoding is used, we will need to make sure we don't
+        // split multibyte characters when we wrap
+        $is_utf8 = (strtolower($this->CharSet) == 'utf-8');
+        $lelen = strlen($this->LE);
+        $crlflen = strlen(self::CRLF);
+
+        $message = $this->fixEOL($message);
+        //Remove a trailing line break
+        if (substr($message, -$lelen) == $this->LE) {
+            $message = substr($message, 0, -$lelen);
+        }
+
+        //Split message into lines
+        $lines = explode($this->LE, $message);
+        //Message will be rebuilt in here
+        $message = '';
+        foreach ($lines as $line) {
+            $words = explode(' ', $line);
+            $buf = '';
+            $firstword = true;
+            foreach ($words as $word) {
+                if ($qp_mode and (strlen($word) > $length)) {
+                    $space_left = $length - strlen($buf) - $crlflen;
+                    if (!$firstword) {
+                        if ($space_left > 20) {
+                            $len = $space_left;
+                            if ($is_utf8) {
+                                $len = $this->utf8CharBoundary($word, $len);
+                            } elseif (substr($word, $len - 1, 1) == '=') {
+                                $len--;
+                            } elseif (substr($word, $len - 2, 1) == '=') {
+                                $len -= 2;
+                            }
+                            $part = substr($word, 0, $len);
+                            $word = substr($word, $len);
+                            $buf .= ' ' . $part;
+                            $message .= $buf . sprintf('=%s', self::CRLF);
+                        } else {
+                            $message .= $buf . $soft_break;
+                        }
+                        $buf = '';
+                    }
+                    while (strlen($word) > 0) {
+                        if ($length <= 0) {
+                            break;
+                        }
+                        $len = $length;
+                        if ($is_utf8) {
+                            $len = $this->utf8CharBoundary($word, $len);
+                        } elseif (substr($word, $len - 1, 1) == '=') {
+                            $len--;
+                        } elseif (substr($word, $len - 2, 1) == '=') {
+                            $len -= 2;
+                        }
+                        $part = substr($word, 0, $len);
+                        $word = substr($word, $len);
+
+                        if (strlen($word) > 0) {
+                            $message .= $part . sprintf('=%s', self::CRLF);
+                        } else {
+                            $buf = $part;
+                        }
+                    }
+                } else {
+                    $buf_o = $buf;
+                    if (!$firstword) {
+                        $buf .= ' ';
+                    }
+                    $buf .= $word;
+
+                    if (strlen($buf) > $length and $buf_o != '') {
+                        $message .= $buf_o . $soft_break;
+                        $buf = $word;
+                    }
+                }
+                $firstword = false;
+            }
+            $message .= $buf . self::CRLF;
+        }
+
+        return $message;
+    }
+
+    /**
+     * Find the last character boundary prior to $maxLength in a utf-8
+     * quoted-printable encoded string.
+     * Original written by Colin Brown.
+     * @access public
+     * @param string $encodedText utf-8 QP text
+     * @param integer $maxLength Find the last character boundary prior to this length
+     * @return integer
+     */
+    public function utf8CharBoundary($encodedText, $maxLength)
+    {
+        $foundSplitPos = false;
+        $lookBack = 3;
+        while (!$foundSplitPos) {
+            $lastChunk = substr($encodedText, $maxLength - $lookBack, $lookBack);
+            $encodedCharPos = strpos($lastChunk, '=');
+            if (false !== $encodedCharPos) {
+                // Found start of encoded character byte within $lookBack block.
+                // Check the encoded byte value (the 2 chars after the '=')
+                $hex = substr($encodedText, $maxLength - $lookBack + $encodedCharPos + 1, 2);
+                $dec = hexdec($hex);
+                if ($dec < 128) {
+                    // Single byte character.
+                    // If the encoded char was found at pos 0, it will fit
+                    // otherwise reduce maxLength to start of the encoded char
+                    if ($encodedCharPos > 0) {
+                        $maxLength = $maxLength - ($lookBack - $encodedCharPos);
+                    }
+                    $foundSplitPos = true;
+                } elseif ($dec >= 192) {
+                    // First byte of a multi byte character
+                    // Reduce maxLength to split at start of character
+                    $maxLength = $maxLength - ($lookBack - $encodedCharPos);
+                    $foundSplitPos = true;
+                } elseif ($dec < 192) {
+                    // Middle byte of a multi byte character, look further back
+                    $lookBack += 3;
+                }
+            } else {
+                // No encoded character found
+                $foundSplitPos = true;
+            }
+        }
+        return $maxLength;
+    }
+
+    /**
+     * Apply word wrapping to the message body.
+     * Wraps the message body to the number of chars set in the WordWrap property.
+     * You should only do this to plain-text bodies as wrapping HTML tags may break them.
+     * This is called automatically by createBody(), so you don't need to call it yourself.
+     * @access public
+     * @return void
+     */
+    public function setWordWrap()
+    {
+        if ($this->WordWrap < 1) {
+            return;
+        }
+
+        switch ($this->message_type) {
+            case 'alt':
+            case 'alt_inline':
+            case 'alt_attach':
+            case 'alt_inline_attach':
+                $this->AltBody = $this->wrapText($this->AltBody, $this->WordWrap);
+                break;
+            default:
+                $this->Body = $this->wrapText($this->Body, $this->WordWrap);
+                break;
+        }
+    }
+
+    /**
+     * Assemble message headers.
+     * @access public
+     * @return string The assembled headers
+     */
+    public function createHeader()
+    {
+        $result = '';
+
+        if ($this->MessageDate == '') {
+            $this->MessageDate = self::rfcDate();
+        }
+        $result .= $this->headerLine('Date', $this->MessageDate);
+
+        // To be created automatically by mail()
+        if ($this->SingleTo) {
+            if ($this->Mailer != 'mail') {
+                foreach ($this->to as $toaddr) {
+                    $this->SingleToArray[] = $this->addrFormat($toaddr);
+                }
+            }
+        } else {
+            if (count($this->to) > 0) {
+                if ($this->Mailer != 'mail') {
+                    $result .= $this->addrAppend('To', $this->to);
+                }
+            } elseif (count($this->cc) == 0) {
+                $result .= $this->headerLine('To', 'undisclosed-recipients:;');
+            }
+        }
+
+        $result .= $this->addrAppend('From', array(array(trim($this->From), $this->FromName)));
+
+        // sendmail and mail() extract Cc from the header before sending
+        if (count($this->cc) > 0) {
+            $result .= $this->addrAppend('Cc', $this->cc);
+        }
+
+        // sendmail and mail() extract Bcc from the header before sending
+        if ((
+                $this->Mailer == 'sendmail' or $this->Mailer == 'qmail' or $this->Mailer == 'mail'
+            )
+            and count($this->bcc) > 0
+        ) {
+            $result .= $this->addrAppend('Bcc', $this->bcc);
+        }
+
+        if (count($this->ReplyTo) > 0) {
+            $result .= $this->addrAppend('Reply-To', $this->ReplyTo);
+        }
+
+        // mail() sets the subject itself
+        if ($this->Mailer != 'mail') {
+            $result .= $this->headerLine('Subject', $this->encodeHeader($this->secureHeader($this->Subject)));
+        }
+
+        // Only allow a custom message ID if it conforms to RFC 5322 section 3.6.4
+        // https://tools.ietf.org/html/rfc5322#section-3.6.4
+        if ('' != $this->MessageID and preg_match('/^<.*@.*>$/', $this->MessageID)) {
+            $this->lastMessageID = $this->MessageID;
+        } else {
+            $this->lastMessageID = sprintf('<%s@%s>', $this->uniqueid, $this->serverHostname());
+        }
+        $result .= $this->headerLine('Message-ID', $this->lastMessageID);
+        if (!is_null($this->Priority)) {
+            $result .= $this->headerLine('X-Priority', $this->Priority);
+        }
+        if ($this->XMailer == '') {
+            $result .= $this->headerLine(
+                'X-Mailer',
+                'PHPMailer ' . $this->Version . ' (https://github.com/PHPMailer/PHPMailer)'
+            );
+        } else {
+            $myXmailer = trim($this->XMailer);
+            if ($myXmailer) {
+                $result .= $this->headerLine('X-Mailer', $myXmailer);
+            }
+        }
+
+        if ($this->ConfirmReadingTo != '') {
+            $result .= $this->headerLine('Disposition-Notification-To', '<' . $this->ConfirmReadingTo . '>');
+        }
+
+        // Add custom headers
+        foreach ($this->CustomHeader as $header) {
+            $result .= $this->headerLine(
+                trim($header[0]),
+                $this->encodeHeader(trim($header[1]))
+            );
+        }
+        if (!$this->sign_key_file) {
+            $result .= $this->headerLine('MIME-Version', '1.0');
+            $result .= $this->getMailMIME();
+        }
+
+        return $result;
+    }
+
+    /**
+     * Get the message MIME type headers.
+     * @access public
+     * @return string
+     */
+    public function getMailMIME()
+    {
+        $result = '';
+        $ismultipart = true;
+        switch ($this->message_type) {
+            case 'inline':
+                $result .= $this->headerLine('Content-Type', 'multipart/related;');
+                $result .= $this->textLine("\tboundary=\"" . $this->boundary[1] . '"');
+                break;
+            case 'attach':
+            case 'inline_attach':
+            case 'alt_attach':
+            case 'alt_inline_attach':
+                $result .= $this->headerLine('Content-Type', 'multipart/mixed;');
+                $result .= $this->textLine("\tboundary=\"" . $this->boundary[1] . '"');
+                break;
+            case 'alt':
+            case 'alt_inline':
+                $result .= $this->headerLine('Content-Type', 'multipart/alternative;');
+                $result .= $this->textLine("\tboundary=\"" . $this->boundary[1] . '"');
+                break;
+            default:
+                // Catches case 'plain': and case '':
+                $result .= $this->textLine('Content-Type: ' . $this->ContentType . '; charset=' . $this->CharSet);
+                $ismultipart = false;
+                break;
+        }
+        // RFC1341 part 5 says 7bit is assumed if not specified
+        if ($this->Encoding != '7bit') {
+            // RFC 2045 section 6.4 says multipart MIME parts may only use 7bit, 8bit or binary CTE
+            if ($ismultipart) {
+                if ($this->Encoding == '8bit') {
+                    $result .= $this->headerLine('Content-Transfer-Encoding', '8bit');
+                }
+                // The only remaining alternatives are quoted-printable and base64, which are both 7bit compatible
+            } else {
+                $result .= $this->headerLine('Content-Transfer-Encoding', $this->Encoding);
+            }
+        }
+
+        if ($this->Mailer != 'mail') {
+            $result .= $this->LE;
+        }
+
+        return $result;
+    }
+
+    /**
+     * Returns the whole MIME message.
+     * Includes complete headers and body.
+     * Only valid post preSend().
+     * @see PHPMailer::preSend()
+     * @access public
+     * @return string
+     */
+    public function getSentMIMEMessage()
+    {
+        return rtrim($this->MIMEHeader . $this->mailHeader, "\n\r") . self::CRLF . self::CRLF . $this->MIMEBody;
+    }
+
+    /**
+     * Create unique ID
+     * @return string
+     */
+    protected function generateId() {
+        return md5(uniqid(time()));
+    }
+
+    /**
+     * Assemble the message body.
+     * Returns an empty string on failure.
+     * @access public
+     * @throws phpmailerException
+     * @return string The assembled message body
+     */
+    public function createBody()
+    {
+        $body = '';
+        //Create unique IDs and preset boundaries
+        $this->uniqueid = $this->generateId();
+        $this->boundary[1] = 'b1_' . $this->uniqueid;
+        $this->boundary[2] = 'b2_' . $this->uniqueid;
+        $this->boundary[3] = 'b3_' . $this->uniqueid;
+
+        if ($this->sign_key_file) {
+            $body .= $this->getMailMIME() . $this->LE;
+        }
+
+        $this->setWordWrap();
+
+        $bodyEncoding = $this->Encoding;
+        $bodyCharSet = $this->CharSet;
+        //Can we do a 7-bit downgrade?
+        if ($bodyEncoding == '8bit' and !$this->has8bitChars($this->Body)) {
+            $bodyEncoding = '7bit';
+            //All ISO 8859, Windows codepage and UTF-8 charsets are ascii compatible up to 7-bit
+            $bodyCharSet = 'us-ascii';
+        }
+        //If lines are too long, and we're not already using an encoding that will shorten them,
+        //change to quoted-printable transfer encoding for the body part only
+        if ('base64' != $this->Encoding and self::hasLineLongerThanMax($this->Body)) {
+            $bodyEncoding = 'quoted-printable';
+        }
+
+        $altBodyEncoding = $this->Encoding;
+        $altBodyCharSet = $this->CharSet;
+        //Can we do a 7-bit downgrade?
+        if ($altBodyEncoding == '8bit' and !$this->has8bitChars($this->AltBody)) {
+            $altBodyEncoding = '7bit';
+            //All ISO 8859, Windows codepage and UTF-8 charsets are ascii compatible up to 7-bit
+            $altBodyCharSet = 'us-ascii';
+        }
+        //If lines are too long, and we're not already using an encoding that will shorten them,
+        //change to quoted-printable transfer encoding for the alt body part only
+        if ('base64' != $altBodyEncoding and self::hasLineLongerThanMax($this->AltBody)) {
+            $altBodyEncoding = 'quoted-printable';
+        }
+        //Use this as a preamble in all multipart message types
+        $mimepre = "This is a multi-part message in MIME format." . $this->LE . $this->LE;
+        switch ($this->message_type) {
+            case 'inline':
+                $body .= $mimepre;
+                $body .= $this->getBoundary($this->boundary[1], $bodyCharSet, '', $bodyEncoding);
+                $body .= $this->encodeString($this->Body, $bodyEncoding);
+                $body .= $this->LE . $this->LE;
+                $body .= $this->attachAll('inline', $this->boundary[1]);
+                break;
+            case 'attach':
+                $body .= $mimepre;
+                $body .= $this->getBoundary($this->boundary[1], $bodyCharSet, '', $bodyEncoding);
+                $body .= $this->encodeString($this->Body, $bodyEncoding);
+                $body .= $this->LE . $this->LE;
+                $body .= $this->attachAll('attachment', $this->boundary[1]);
+                break;
+            case 'inline_attach':
+                $body .= $mimepre;
+                $body .= $this->textLine('--' . $this->boundary[1]);
+                $body .= $this->headerLine('Content-Type', 'multipart/related;');
+                $body .= $this->textLine("\tboundary=\"" . $this->boundary[2] . '"');
+                $body .= $this->LE;
+                $body .= $this->getBoundary($this->boundary[2], $bodyCharSet, '', $bodyEncoding);
+                $body .= $this->encodeString($this->Body, $bodyEncoding);
+                $body .= $this->LE . $this->LE;
+                $body .= $this->attachAll('inline', $this->boundary[2]);
+                $body .= $this->LE;
+                $body .= $this->attachAll('attachment', $this->boundary[1]);
+                break;
+            case 'alt':
+                $body .= $mimepre;
+                $body .= $this->getBoundary($this->boundary[1], $altBodyCharSet, 'text/plain', $altBodyEncoding);
+                $body .= $this->encodeString($this->AltBody, $altBodyEncoding);
+                $body .= $this->LE . $this->LE;
+                $body .= $this->getBoundary($this->boundary[1], $bodyCharSet, 'text/html', $bodyEncoding);
+                $body .= $this->encodeString($this->Body, $bodyEncoding);
+                $body .= $this->LE . $this->LE;
+                if (!empty($this->Ical)) {
+                    $body .= $this->getBoundary($this->boundary[1], '', 'text/calendar; method=REQUEST', '');
+                    $body .= $this->encodeString($this->Ical, $this->Encoding);
+                    $body .= $this->LE . $this->LE;
+                }
+                $body .= $this->endBoundary($this->boundary[1]);
+                break;
+            case 'alt_inline':
+                $body .= $mimepre;
+                $body .= $this->getBoundary($this->boundary[1], $altBodyCharSet, 'text/plain', $altBodyEncoding);
+                $body .= $this->encodeString($this->AltBody, $altBodyEncoding);
+                $body .= $this->LE . $this->LE;
+                $body .= $this->textLine('--' . $this->boundary[1]);
+                $body .= $this->headerLine('Content-Type', 'multipart/related;');
+                $body .= $this->textLine("\tboundary=\"" . $this->boundary[2] . '"');
+                $body .= $this->LE;
+                $body .= $this->getBoundary($this->boundary[2], $bodyCharSet, 'text/html', $bodyEncoding);
+                $body .= $this->encodeString($this->Body, $bodyEncoding);
+                $body .= $this->LE . $this->LE;
+                $body .= $this->attachAll('inline', $this->boundary[2]);
+                $body .= $this->LE;
+                $body .= $this->endBoundary($this->boundary[1]);
+                break;
+            case 'alt_attach':
+                $body .= $mimepre;
+                $body .= $this->textLine('--' . $this->boundary[1]);
+                $body .= $this->headerLine('Content-Type', 'multipart/alternative;');
+                $body .= $this->textLine("\tboundary=\"" . $this->boundary[2] . '"');
+                $body .= $this->LE;
+                $body .= $this->getBoundary($this->boundary[2], $altBodyCharSet, 'text/plain', $altBodyEncoding);
+                $body .= $this->encodeString($this->AltBody, $altBodyEncoding);
+                $body .= $this->LE . $this->LE;
+                $body .= $this->getBoundary($this->boundary[2], $bodyCharSet, 'text/html', $bodyEncoding);
+                $body .= $this->encodeString($this->Body, $bodyEncoding);
+                $body .= $this->LE . $this->LE;
+                $body .= $this->endBoundary($this->boundary[2]);
+                $body .= $this->LE;
+                $body .= $this->attachAll('attachment', $this->boundary[1]);
+                break;
+            case 'alt_inline_attach':
+                $body .= $mimepre;
+                $body .= $this->textLine('--' . $this->boundary[1]);
+                $body .= $this->headerLine('Content-Type', 'multipart/alternative;');
+                $body .= $this->textLine("\tboundary=\"" . $this->boundary[2] . '"');
+                $body .= $this->LE;
+                $body .= $this->getBoundary($this->boundary[2], $altBodyCharSet, 'text/plain', $altBodyEncoding);
+                $body .= $this->encodeString($this->AltBody, $altBodyEncoding);
+                $body .= $this->LE . $this->LE;
+                $body .= $this->textLine('--' . $this->boundary[2]);
+                $body .= $this->headerLine('Content-Type', 'multipart/related;');
+                $body .= $this->textLine("\tboundary=\"" . $this->boundary[3] . '"');
+                $body .= $this->LE;
+                $body .= $this->getBoundary($this->boundary[3], $bodyCharSet, 'text/html', $bodyEncoding);
+                $body .= $this->encodeString($this->Body, $bodyEncoding);
+                $body .= $this->LE . $this->LE;
+                $body .= $this->attachAll('inline', $this->boundary[3]);
+                $body .= $this->LE;
+                $body .= $this->endBoundary($this->boundary[2]);
+                $body .= $this->LE;
+                $body .= $this->attachAll('attachment', $this->boundary[1]);
+                break;
+            default:
+                // Catch case 'plain' and case '', applies to simple `text/plain` and `text/html` body content types
+                //Reset the `Encoding` property in case we changed it for line length reasons
+                $this->Encoding = $bodyEncoding;
+                $body .= $this->encodeString($this->Body, $this->Encoding);
+                break;
+        }
+
+        if ($this->isError()) {
+            $body = '';
+        } elseif ($this->sign_key_file) {
+            try {
+                if (!defined('PKCS7_TEXT')) {
+                    throw new phpmailerException($this->lang('extension_missing') . 'openssl');
+                }
+                // @TODO would be nice to use php://temp streams here, but need to wrap for PHP < 5.1
+                $file = tempnam(sys_get_temp_dir(), 'mail');
+                if (false === file_put_contents($file, $body)) {
+                    throw new phpmailerException($this->lang('signing') . ' Could not write temp file');
+                }
+                $signed = tempnam(sys_get_temp_dir(), 'signed');
+                //Workaround for PHP bug https://bugs.php.net/bug.php?id=69197
+                if (empty($this->sign_extracerts_file)) {
+                    $sign = @openssl_pkcs7_sign(
+                        $file,
+                        $signed,
+                        'file://' . realpath($this->sign_cert_file),
+                        array('file://' . realpath($this->sign_key_file), $this->sign_key_pass),
+                        null
+                    );
+                } else {
+                    $sign = @openssl_pkcs7_sign(
+                        $file,
+                        $signed,
+                        'file://' . realpath($this->sign_cert_file),
+                        array('file://' . realpath($this->sign_key_file), $this->sign_key_pass),
+                        null,
+                        PKCS7_DETACHED,
+                        $this->sign_extracerts_file
+                    );
+                }
+                if ($sign) {
+                    @unlink($file);
+                    $body = file_get_contents($signed);
+                    @unlink($signed);
+                    //The message returned by openssl contains both headers and body, so need to split them up
+                    $parts = explode("\n\n", $body, 2);
+                    $this->MIMEHeader .= $parts[0] . $this->LE . $this->LE;
+                    $body = $parts[1];
+                } else {
+                    @unlink($file);
+                    @unlink($signed);
+                    throw new phpmailerException($this->lang('signing') . openssl_error_string());
+                }
+            } catch (phpmailerException $exc) {
+                $body = '';
+                if ($this->exceptions) {
+                    throw $exc;
+                }
+            }
+        }
+        return $body;
+    }
+
+    /**
+     * Return the start of a message boundary.
+     * @access protected
+     * @param string $boundary
+     * @param string $charSet
+     * @param string $contentType
+     * @param string $encoding
+     * @return string
+     */
+    protected function getBoundary($boundary, $charSet, $contentType, $encoding)
+    {
+        $result = '';
+        if ($charSet == '') {
+            $charSet = $this->CharSet;
+        }
+        if ($contentType == '') {
+            $contentType = $this->ContentType;
+        }
+        if ($encoding == '') {
+            $encoding = $this->Encoding;
+        }
+        $result .= $this->textLine('--' . $boundary);
+        $result .= sprintf('Content-Type: %s; charset=%s', $contentType, $charSet);
+        $result .= $this->LE;
+        // RFC1341 part 5 says 7bit is assumed if not specified
+        if ($encoding != '7bit') {
+            $result .= $this->headerLine('Content-Transfer-Encoding', $encoding);
+        }
+        $result .= $this->LE;
+
+        return $result;
+    }
+
+    /**
+     * Return the end of a message boundary.
+     * @access protected
+     * @param string $boundary
+     * @return string
+     */
+    protected function endBoundary($boundary)
+    {
+        return $this->LE . '--' . $boundary . '--' . $this->LE;
+    }
+
+    /**
+     * Set the message type.
+     * PHPMailer only supports some preset message types, not arbitrary MIME structures.
+     * @access protected
+     * @return void
+     */
+    protected function setMessageType()
+    {
+        $type = array();
+        if ($this->alternativeExists()) {
+            $type[] = 'alt';
+        }
+        if ($this->inlineImageExists()) {
+            $type[] = 'inline';
+        }
+        if ($this->attachmentExists()) {
+            $type[] = 'attach';
+        }
+        $this->message_type = implode('_', $type);
+        if ($this->message_type == '') {
+            //The 'plain' message_type refers to the message having a single body element, not that it is plain-text
+            $this->message_type = 'plain';
+        }
+    }
+
+    /**
+     * Format a header line.
+     * @access public
+     * @param string $name
+     * @param string $value
+     * @return string
+     */
+    public function headerLine($name, $value)
+    {
+        return $name . ': ' . $value . $this->LE;
+    }
+
+    /**
+     * Return a formatted mail line.
+     * @access public
+     * @param string $value
+     * @return string
+     */
+    public function textLine($value)
+    {
+        return $value . $this->LE;
+    }
+
+    /**
+     * Add an attachment from a path on the filesystem.
+     * Never use a user-supplied path to a file!
+     * Returns false if the file could not be found or read.
+     * @param string $path Path to the attachment.
+     * @param string $name Overrides the attachment name.
+     * @param string $encoding File encoding (see $Encoding).
+     * @param string $type File extension (MIME) type.
+     * @param string $disposition Disposition to use
+     * @throws phpmailerException
+     * @return boolean
+     */
+    public function addAttachment($path, $name = '', $encoding = 'base64', $type = '', $disposition = 'attachment')
+    {
+        try {
+            if (!@is_file($path)) {
+                throw new phpmailerException($this->lang('file_access') . $path, self::STOP_CONTINUE);
+            }
+
+            // If a MIME type is not specified, try to work it out from the file name
+            if ($type == '') {
+                $type = self::filenameToType($path);
+            }
+
+            $filename = basename($path);
+            if ($name == '') {
+                $name = $filename;
+            }
+
+            $this->attachment[] = array(
+                0 => $path,
+                1 => $filename,
+                2 => $name,
+                3 => $encoding,
+                4 => $type,
+                5 => false, // isStringAttachment
+                6 => $disposition,
+                7 => 0
+            );
+
+        } catch (phpmailerException $exc) {
+            $this->setError($exc->getMessage());
+            $this->edebug($exc->getMessage());
+            if ($this->exceptions) {
+                throw $exc;
+            }
+            return false;
+        }
+        return true;
+    }
+
+    /**
+     * Return the array of attachments.
+     * @return array
+     */
+    public function getAttachments()
+    {
+        return $this->attachment;
+    }
+
+    /**
+     * Attach all file, string, and binary attachments to the message.
+     * Returns an empty string on failure.
+     * @access protected
+     * @param string $disposition_type
+     * @param string $boundary
+     * @return string
+     */
+    protected function attachAll($disposition_type, $boundary)
+    {
+        // Return text of body
+        $mime = array();
+        $cidUniq = array();
+        $incl = array();
+
+        // Add all attachments
+        foreach ($this->attachment as $attachment) {
+            // Check if it is a valid disposition_filter
+            if ($attachment[6] == $disposition_type) {
+                // Check for string attachment
+                $string = '';
+                $path = '';
+                $bString = $attachment[5];
+                if ($bString) {
+                    $string = $attachment[0];
+                } else {
+                    $path = $attachment[0];
+                }
+
+                $inclhash = md5(serialize($attachment));
+                if (in_array($inclhash, $incl)) {
+                    continue;
+                }
+                $incl[] = $inclhash;
+                $name = $attachment[2];
+                $encoding = $attachment[3];
+                $type = $attachment[4];
+                $disposition = $attachment[6];
+                $cid = $attachment[7];
+                if ($disposition == 'inline' && array_key_exists($cid, $cidUniq)) {
+                    continue;
+                }
+                $cidUniq[$cid] = true;
+
+                $mime[] = sprintf('--%s%s', $boundary, $this->LE);
+                //Only include a filename property if we have one
+                if (!empty($name)) {
+                    $mime[] = sprintf(
+                        'Content-Type: %s; name="%s"%s',
+                        $type,
+                        $this->encodeHeader($this->secureHeader($name)),
+                        $this->LE
+                    );
+                } else {
+                    $mime[] = sprintf(
+                        'Content-Type: %s%s',
+                        $type,
+                        $this->LE
+                    );
+                }
+                // RFC1341 part 5 says 7bit is assumed if not specified
+                if ($encoding != '7bit') {
+                    $mime[] = sprintf('Content-Transfer-Encoding: %s%s', $encoding, $this->LE);
+                }
+
+                if ($disposition == 'inline') {
+                    $mime[] = sprintf('Content-ID: <%s>%s', $cid, $this->LE);
+                }
+
+                // If a filename contains any of these chars, it should be quoted,
+                // but not otherwise: RFC2183 & RFC2045 5.1
+                // Fixes a warning in IETF's msglint MIME checker
+                // Allow for bypassing the Content-Disposition header totally
+                if (!(empty($disposition))) {
+                    $encoded_name = $this->encodeHeader($this->secureHeader($name));
+                    if (preg_match('/[ \(\)<>@,;:\\"\/\[\]\?=]/', $encoded_name)) {
+                        $mime[] = sprintf(
+                            'Content-Disposition: %s; filename="%s"%s',
+                            $disposition,
+                            $encoded_name,
+                            $this->LE . $this->LE
+                        );
+                    } else {
+                        if (!empty($encoded_name)) {
+                            $mime[] = sprintf(
+                                'Content-Disposition: %s; filename=%s%s',
+                                $disposition,
+                                $encoded_name,
+                                $this->LE . $this->LE
+                            );
+                        } else {
+                            $mime[] = sprintf(
+                                'Content-Disposition: %s%s',
+                                $disposition,
+                                $this->LE . $this->LE
+                            );
+                        }
+                    }
+                } else {
+                    $mime[] = $this->LE;
+                }
+
+                // Encode as string attachment
+                if ($bString) {
+                    $mime[] = $this->encodeString($string, $encoding);
+                    if ($this->isError()) {
+                        return '';
+                    }
+                    $mime[] = $this->LE . $this->LE;
+                } else {
+                    $mime[] = $this->encodeFile($path, $encoding);
+                    if ($this->isError()) {
+                        return '';
+                    }
+                    $mime[] = $this->LE . $this->LE;
+                }
+            }
+        }
+
+        $mime[] = sprintf('--%s--%s', $boundary, $this->LE);
+
+        return implode('', $mime);
+    }
+
+    /**
+     * Encode a file attachment in requested format.
+     * Returns an empty string on failure.
+     * @param string $path The full path to the file
+     * @param string $encoding The encoding to use; one of 'base64', '7bit', '8bit', 'binary', 'quoted-printable'
+     * @throws phpmailerException
+     * @access protected
+     * @return string
+     */
+    protected function encodeFile($path, $encoding = 'base64')
+    {
+        try {
+            if (!is_readable($path)) {
+                throw new phpmailerException($this->lang('file_open') . $path, self::STOP_CONTINUE);
+            }
+            $magic_quotes = get_magic_quotes_runtime();
+            if ($magic_quotes) {
+                if (version_compare(PHP_VERSION, '5.3.0', '<')) {
+                    set_magic_quotes_runtime(false);
+                } else {
+                    //Doesn't exist in PHP 5.4, but we don't need to check because
+                    //get_magic_quotes_runtime always returns false in 5.4+
+                    //so it will never get here
+                    ini_set('magic_quotes_runtime', false);
+                }
+            }
+            $file_buffer = file_get_contents($path);
+            $file_buffer = $this->encodeString($file_buffer, $encoding);
+            if ($magic_quotes) {
+                if (version_compare(PHP_VERSION, '5.3.0', '<')) {
+                    set_magic_quotes_runtime($magic_quotes);
+                } else {
+                    ini_set('magic_quotes_runtime', $magic_quotes);
+                }
+            }
+            return $file_buffer;
+        } catch (Exception $exc) {
+            $this->setError($exc->getMessage());
+            return '';
+        }
+    }
+
+    /**
+     * Encode a string in requested format.
+     * Returns an empty string on failure.
+     * @param string $str The text to encode
+     * @param string $encoding The encoding to use; one of 'base64', '7bit', '8bit', 'binary', 'quoted-printable'
+     * @access public
+     * @return string
+     */
+    public function encodeString($str, $encoding = 'base64')
+    {
+        $encoded = '';
+        switch (strtolower($encoding)) {
+            case 'base64':
+                $encoded = chunk_split(base64_encode($str), 76, $this->LE);
+                break;
+            case '7bit':
+            case '8bit':
+                $encoded = $this->fixEOL($str);
+                // Make sure it ends with a line break
+                if (substr($encoded, -(strlen($this->LE))) != $this->LE) {
+                    $encoded .= $this->LE;
+                }
+                break;
+            case 'binary':
+                $encoded = $str;
+                break;
+            case 'quoted-printable':
+                $encoded = $this->encodeQP($str);
+                break;
+            default:
+                $this->setError($this->lang('encoding') . $encoding);
+                break;
+        }
+        return $encoded;
+    }
+
+    /**
+     * Encode a header string optimally.
+     * Picks shortest of Q, B, quoted-printable or none.
+     * @access public
+     * @param string $str
+     * @param string $position
+     * @return string
+     */
+    public function encodeHeader($str, $position = 'text')
+    {
+        $matchcount = 0;
+        switch (strtolower($position)) {
+            case 'phrase':
+                if (!preg_match('/[\200-\377]/', $str)) {
+                    // Can't use addslashes as we don't know the value of magic_quotes_sybase
+                    $encoded = addcslashes($str, "\0..\37\177\\\"");
+                    if (($str == $encoded) && !preg_match('/[^A-Za-z0-9!#$%&\'*+\/=?^_`{|}~ -]/', $str)) {
+                        return ($encoded);
+                    } else {
+                        return ("\"$encoded\"");
+                    }
+                }
+                $matchcount = preg_match_all('/[^\040\041\043-\133\135-\176]/', $str, $matches);
+                break;
+            /** @noinspection PhpMissingBreakStatementInspection */
+            case 'comment':
+                $matchcount = preg_match_all('/[()"]/', $str, $matches);
+                // Intentional fall-through
+            case 'text':
+            default:
+                $matchcount += preg_match_all('/[\000-\010\013\014\016-\037\177-\377]/', $str, $matches);
+                break;
+        }
+
+        //There are no chars that need encoding
+        if ($matchcount == 0) {
+            return ($str);
+        }
+
+        $maxlen = 75 - 7 - strlen($this->CharSet);
+        // Try to select the encoding which should produce the shortest output
+        if ($matchcount > strlen($str) / 3) {
+            // More than a third of the content will need encoding, so B encoding will be most efficient
+            $encoding = 'B';
+            if (function_exists('mb_strlen') && $this->hasMultiBytes($str)) {
+                // Use a custom function which correctly encodes and wraps long
+                // multibyte strings without breaking lines within a character
+                $encoded = $this->base64EncodeWrapMB($str, "\n");
+            } else {
+                $encoded = base64_encode($str);
+                $maxlen -= $maxlen % 4;
+                $encoded = trim(chunk_split($encoded, $maxlen, "\n"));
+            }
+        } else {
+            $encoding = 'Q';
+            $encoded = $this->encodeQ($str, $position);
+            $encoded = $this->wrapText($encoded, $maxlen, true);
+            $encoded = str_replace('=' . self::CRLF, "\n", trim($encoded));
+        }
+
+        $encoded = preg_replace('/^(.*)$/m', ' =?' . $this->CharSet . "?$encoding?\\1?=", $encoded);
+        $encoded = trim(str_replace("\n", $this->LE, $encoded));
+
+        return $encoded;
+    }
+
+    /**
+     * Check if a string contains multi-byte characters.
+     * @access public
+     * @param string $str multi-byte text to wrap encode
+     * @return boolean
+     */
+    public function hasMultiBytes($str)
+    {
+        if (function_exists('mb_strlen')) {
+            return (strlen($str) > mb_strlen($str, $this->CharSet));
+        } else { // Assume no multibytes (we can't handle without mbstring functions anyway)
+            return false;
+        }
+    }
+
+    /**
+     * Does a string contain any 8-bit chars (in any charset)?
+     * @param string $text
+     * @return boolean
+     */
+    public function has8bitChars($text)
+    {
+        return (boolean)preg_match('/[\x80-\xFF]/', $text);
+    }
+
+    /**
+     * Encode and wrap long multibyte strings for mail headers
+     * without breaking lines within a character.
+     * Adapted from a function by paravoid
+     * @link http://www.php.net/manual/en/function.mb-encode-mimeheader.php#60283
+     * @access public
+     * @param string $str multi-byte text to wrap encode
+     * @param string $linebreak string to use as linefeed/end-of-line
+     * @return string
+     */
+    public function base64EncodeWrapMB($str, $linebreak = null)
+    {
+        $start = '=?' . $this->CharSet . '?B?';
+        $end = '?=';
+        $encoded = '';
+        if ($linebreak === null) {
+            $linebreak = $this->LE;
+        }
+
+        $mb_length = mb_strlen($str, $this->CharSet);
+        // Each line must have length <= 75, including $start and $end
+        $length = 75 - strlen($start) - strlen($end);
+        // Average multi-byte ratio
+        $ratio = $mb_length / strlen($str);
+        // Base64 has a 4:3 ratio
+        $avgLength = floor($length * $ratio * .75);
+
+        for ($i = 0; $i < $mb_length; $i += $offset) {
+            $lookBack = 0;
+            do {
+                $offset = $avgLength - $lookBack;
+                $chunk = mb_substr($str, $i, $offset, $this->CharSet);
+                $chunk = base64_encode($chunk);
+                $lookBack++;
+            } while (strlen($chunk) > $length);
+            $encoded .= $chunk . $linebreak;
+        }
+
+        // Chomp the last linefeed
+        $encoded = substr($encoded, 0, -strlen($linebreak));
+        return $encoded;
+    }
+
+    /**
+     * Encode a string in quoted-printable format.
+     * According to RFC2045 section 6.7.
+     * @access public
+     * @param string $string The text to encode
+     * @param integer $line_max Number of chars allowed on a line before wrapping
+     * @return string
+     * @link http://www.php.net/manual/en/function.quoted-printable-decode.php#89417 Adapted from this comment
+     */
+    public function encodeQP($string, $line_max = 76)
+    {
+        // Use native function if it's available (>= PHP5.3)
+        if (function_exists('quoted_printable_encode')) {
+            return quoted_printable_encode($string);
+        }
+        // Fall back to a pure PHP implementation
+        $string = str_replace(
+            array('%20', '%0D%0A.', '%0D%0A', '%'),
+            array(' ', "\r\n=2E", "\r\n", '='),
+            rawurlencode($string)
+        );
+        return preg_replace('/[^\r\n]{' . ($line_max - 3) . '}[^=\r\n]{2}/', "$0=\r\n", $string);
+    }
+
+    /**
+     * Backward compatibility wrapper for an old QP encoding function that was removed.
+     * @see PHPMailer::encodeQP()
+     * @access public
+     * @param string $string
+     * @param integer $line_max
+     * @param boolean $space_conv
+     * @return string
+     * @deprecated Use encodeQP instead.
+     */
+    public function encodeQPphp(
+        $string,
+        $line_max = 76,
+        /** @noinspection PhpUnusedParameterInspection */ $space_conv = false
+    ) {
+        return $this->encodeQP($string, $line_max);
+    }
+
+    /**
+     * Encode a string using Q encoding.
+     * @link http://tools.ietf.org/html/rfc2047
+     * @param string $str the text to encode
+     * @param string $position Where the text is going to be used, see the RFC for what that means
+     * @access public
+     * @return string
+     */
+    public function encodeQ($str, $position = 'text')
+    {
+        // There should not be any EOL in the string
+        $pattern = '';
+        $encoded = str_replace(array("\r", "\n"), '', $str);
+        switch (strtolower($position)) {
+            case 'phrase':
+                // RFC 2047 section 5.3
+                $pattern = '^A-Za-z0-9!*+\/ -';
+                break;
+            /** @noinspection PhpMissingBreakStatementInspection */
+            case 'comment':
+                // RFC 2047 section 5.2
+                $pattern = '\(\)"';
+                // intentional fall-through
+                // for this reason we build the $pattern without including delimiters and []
+            case 'text':
+            default:
+                // RFC 2047 section 5.1
+                // Replace every high ascii, control, =, ? and _ characters
+                $pattern = '\000-\011\013\014\016-\037\075\077\137\177-\377' . $pattern;
+                break;
+        }
+        $matches = array();
+        if (preg_match_all("/[{$pattern}]/", $encoded, $matches)) {
+            // If the string contains an '=', make sure it's the first thing we replace
+            // so as to avoid double-encoding
+            $eqkey = array_search('=', $matches[0]);
+            if (false !== $eqkey) {
+                unset($matches[0][$eqkey]);
+                array_unshift($matches[0], '=');
+            }
+            foreach (array_unique($matches[0]) as $char) {
+                $encoded = str_replace($char, '=' . sprintf('%02X', ord($char)), $encoded);
+            }
+        }
+        // Replace every spaces to _ (more readable than =20)
+        return str_replace(' ', '_', $encoded);
+    }
+
+    /**
+     * Add a string or binary attachment (non-filesystem).
+     * This method can be used to attach ascii or binary data,
+     * such as a BLOB record from a database.
+     * @param string $string String attachment data.
+     * @param string $filename Name of the attachment.
+     * @param string $encoding File encoding (see $Encoding).
+     * @param string $type File extension (MIME) type.
+     * @param string $disposition Disposition to use
+     * @return void
+     */
+    public function addStringAttachment(
+        $string,
+        $filename,
+        $encoding = 'base64',
+        $type = '',
+        $disposition = 'attachment'
+    ) {
+        // If a MIME type is not specified, try to work it out from the file name
+        if ($type == '') {
+            $type = self::filenameToType($filename);
+        }
+        // Append to $attachment array
+        $this->attachment[] = array(
+            0 => $string,
+            1 => $filename,
+            2 => basename($filename),
+            3 => $encoding,
+            4 => $type,
+            5 => true, // isStringAttachment
+            6 => $disposition,
+            7 => 0
+        );
+    }
+
+    /**
+     * Add an embedded (inline) attachment from a file.
+     * This can include images, sounds, and just about any other document type.
+     * These differ from 'regular' attachments in that they are intended to be
+     * displayed inline with the message, not just attached for download.
+     * This is used in HTML messages that embed the images
+     * the HTML refers to using the $cid value.
+     * Never use a user-supplied path to a file!
+     * @param string $path Path to the attachment.
+     * @param string $cid Content ID of the attachment; Use this to reference
+     *        the content when using an embedded image in HTML.
+     * @param string $name Overrides the attachment name.
+     * @param string $encoding File encoding (see $Encoding).
+     * @param string $type File MIME type.
+     * @param string $disposition Disposition to use
+     * @return boolean True on successfully adding an attachment
+     */
+    public function addEmbeddedImage($path, $cid, $name = '', $encoding = 'base64', $type = '', $disposition = 'inline')
+    {
+        if (!@is_file($path)) {
+            $this->setError($this->lang('file_access') . $path);
+            return false;
+        }
+
+        // If a MIME type is not specified, try to work it out from the file name
+        if ($type == '') {
+            $type = self::filenameToType($path);
+        }
+
+        $filename = basename($path);
+        if ($name == '') {
+            $name = $filename;
+        }
+
+        // Append to $attachment array
+        $this->attachment[] = array(
+            0 => $path,
+            1 => $filename,
+            2 => $name,
+            3 => $encoding,
+            4 => $type,
+            5 => false, // isStringAttachment
+            6 => $disposition,
+            7 => $cid
+        );
+        return true;
+    }
+
+    /**
+     * Add an embedded stringified attachment.
+     * This can include images, sounds, and just about any other document type.
+     * Be sure to set the $type to an image type for images:
+     * JPEG images use 'image/jpeg', GIF uses 'image/gif', PNG uses 'image/png'.
+     * @param string $string The attachment binary data.
+     * @param string $cid Content ID of the attachment; Use this to reference
+     *        the content when using an embedded image in HTML.
+     * @param string $name
+     * @param string $encoding File encoding (see $Encoding).
+     * @param string $type MIME type.
+     * @param string $disposition Disposition to use
+     * @return boolean True on successfully adding an attachment
+     */
+    public function addStringEmbeddedImage(
+        $string,
+        $cid,
+        $name = '',
+        $encoding = 'base64',
+        $type = '',
+        $disposition = 'inline'
+    ) {
+        // If a MIME type is not specified, try to work it out from the name
+        if ($type == '' and !empty($name)) {
+            $type = self::filenameToType($name);
+        }
+
+        // Append to $attachment array
+        $this->attachment[] = array(
+            0 => $string,
+            1 => $name,
+            2 => $name,
+            3 => $encoding,
+            4 => $type,
+            5 => true, // isStringAttachment
+            6 => $disposition,
+            7 => $cid
+        );
+        return true;
+    }
+
+    /**
+     * Check if an inline attachment is present.
+     * @access public
+     * @return boolean
+     */
+    public function inlineImageExists()
+    {
+        foreach ($this->attachment as $attachment) {
+            if ($attachment[6] == 'inline') {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Check if an attachment (non-inline) is present.
+     * @return boolean
+     */
+    public function attachmentExists()
+    {
+        foreach ($this->attachment as $attachment) {
+            if ($attachment[6] == 'attachment') {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Check if this message has an alternative body set.
+     * @return boolean
+     */
+    public function alternativeExists()
+    {
+        return !empty($this->AltBody);
+    }
+
+    /**
+     * Clear queued addresses of given kind.
+     * @access protected
+     * @param string $kind 'to', 'cc', or 'bcc'
+     * @return void
+     */
+    public function clearQueuedAddresses($kind)
+    {
+        $RecipientsQueue = $this->RecipientsQueue;
+        foreach ($RecipientsQueue as $address => $params) {
+            if ($params[0] == $kind) {
+                unset($this->RecipientsQueue[$address]);
+            }
+        }
+    }
+
+    /**
+     * Clear all To recipients.
+     * @return void
+     */
+    public function clearAddresses()
+    {
+        foreach ($this->to as $to) {
+            unset($this->all_recipients[strtolower($to[0])]);
+        }
+        $this->to = array();
+        $this->clearQueuedAddresses('to');
+    }
+
+    /**
+     * Clear all CC recipients.
+     * @return void
+     */
+    public function clearCCs()
+    {
+        foreach ($this->cc as $cc) {
+            unset($this->all_recipients[strtolower($cc[0])]);
+        }
+        $this->cc = array();
+        $this->clearQueuedAddresses('cc');
+    }
+
+    /**
+     * Clear all BCC recipients.
+     * @return void
+     */
+    public function clearBCCs()
+    {
+        foreach ($this->bcc as $bcc) {
+            unset($this->all_recipients[strtolower($bcc[0])]);
+        }
+        $this->bcc = array();
+        $this->clearQueuedAddresses('bcc');
+    }
+
+    /**
+     * Clear all ReplyTo recipients.
+     * @return void
+     */
+    public function clearReplyTos()
+    {
+        $this->ReplyTo = array();
+        $this->ReplyToQueue = array();
+    }
+
+    /**
+     * Clear all recipient types.
+     * @return void
+     */
+    public function clearAllRecipients()
+    {
+        $this->to = array();
+        $this->cc = array();
+        $this->bcc = array();
+        $this->all_recipients = array();
+        $this->RecipientsQueue = array();
+    }
+
+    /**
+     * Clear all filesystem, string, and binary attachments.
+     * @return void
+     */
+    public function clearAttachments()
+    {
+        $this->attachment = array();
+    }
+
+    /**
+     * Clear all custom headers.
+     * @return void
+     */
+    public function clearCustomHeaders()
+    {
+        $this->CustomHeader = array();
+    }
+
+    /**
+     * Add an error message to the error container.
+     * @access protected
+     * @param string $msg
+     * @return void
+     */
+    protected function setError($msg)
+    {
+        $this->error_count++;
+        if ($this->Mailer == 'smtp' and !is_null($this->smtp)) {
+            $lasterror = $this->smtp->getError();
+            if (!empty($lasterror['error'])) {
+                $msg .= $this->lang('smtp_error') . $lasterror['error'];
+                if (!empty($lasterror['detail'])) {
+                    $msg .= ' Detail: '. $lasterror['detail'];
+                }
+                if (!empty($lasterror['smtp_code'])) {
+                    $msg .= ' SMTP code: ' . $lasterror['smtp_code'];
+                }
+                if (!empty($lasterror['smtp_code_ex'])) {
+                    $msg .= ' Additional SMTP info: ' . $lasterror['smtp_code_ex'];
+                }
+            }
+        }
+        $this->ErrorInfo = $msg;
+    }
+
+    /**
+     * Return an RFC 822 formatted date.
+     * @access public
+     * @return string
+     * @static
+     */
+    public static function rfcDate()
+    {
+        // Set the time zone to whatever the default is to avoid 500 errors
+        // Will default to UTC if it's not set properly in php.ini
+        date_default_timezone_set(@date_default_timezone_get());
+        return date('D, j M Y H:i:s O');
+    }
+
+    /**
+     * Get the server hostname.
+     * Returns 'localhost.localdomain' if unknown.
+     * @access protected
+     * @return string
+     */
+    protected function serverHostname()
+    {
+        $result = 'localhost.localdomain';
+        if (!empty($this->Hostname)) {
+            $result = $this->Hostname;
+        } elseif (isset($_SERVER) and array_key_exists('SERVER_NAME', $_SERVER) and !empty($_SERVER['SERVER_NAME'])) {
+            $result = $_SERVER['SERVER_NAME'];
+        } elseif (function_exists('gethostname') && gethostname() !== false) {
+            $result = gethostname();
+        } elseif (php_uname('n') !== false) {
+            $result = php_uname('n');
+        }
+        return $result;
+    }
+
+    /**
+     * Get an error message in the current language.
+     * @access protected
+     * @param string $key
+     * @return string
+     */
+    protected function lang($key)
+    {
+        if (count($this->language) < 1) {
+            $this->setLanguage('en'); // set the default language
+        }
+
+        if (array_key_exists($key, $this->language)) {
+            if ($key == 'smtp_connect_failed') {
+                //Include a link to troubleshooting docs on SMTP connection failure
+                //this is by far the biggest cause of support questions
+                //but it's usually not PHPMailer's fault.
+                return $this->language[$key] . ' https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting';
+            }
+            return $this->language[$key];
+        } else {
+            //Return the key as a fallback
+            return $key;
+        }
+    }
+
+    /**
+     * Check if an error occurred.
+     * @access public
+     * @return boolean True if an error did occur.
+     */
+    public function isError()
+    {
+        return ($this->error_count > 0);
+    }
+
+    /**
+     * Ensure consistent line endings in a string.
+     * Changes every end of line from CRLF, CR or LF to $this->LE.
+     * @access public
+     * @param string $str String to fixEOL
+     * @return string
+     */
+    public function fixEOL($str)
+    {
+        // Normalise to \n
+        $nstr = str_replace(array("\r\n", "\r"), "\n", $str);
+        // Now convert LE as needed
+        if ($this->LE !== "\n") {
+            $nstr = str_replace("\n", $this->LE, $nstr);
+        }
+        return $nstr;
+    }
+
+    /**
+     * Add a custom header.
+     * $name value can be overloaded to contain
+     * both header name and value (name:value)
+     * @access public
+     * @param string $name Custom header name
+     * @param string $value Header value
+     * @return void
+     */
+    public function addCustomHeader($name, $value = null)
+    {
+        if ($value === null) {
+            // Value passed in as name:value
+            $this->CustomHeader[] = explode(':', $name, 2);
+        } else {
+            $this->CustomHeader[] = array($name, $value);
+        }
+    }
+
+    /**
+     * Returns all custom headers.
+     * @return array
+     */
+    public function getCustomHeaders()
+    {
+        return $this->CustomHeader;
+    }
+
+    /**
+     * Create a message body from an HTML string.
+     * Automatically inlines images and creates a plain-text version by converting the HTML,
+     * overwriting any existing values in Body and AltBody.
+     * Do not source $message content from user input!
+     * $basedir is prepended when handling relative URLs, e.g. <img src="/images/a.png"> and must not be empty
+     * will look for an image file in $basedir/images/a.png and convert it to inline.
+     * If you don't provide a $basedir, relative paths will be left untouched (and thus probably break in email)
+     * If you don't want to apply these transformations to your HTML, just set Body and AltBody directly.
+     * @access public
+     * @param string $message HTML message string
+     * @param string $basedir Absolute path to a base directory to prepend to relative paths to images
+     * @param boolean|callable $advanced Whether to use the internal HTML to text converter
+     *    or your own custom converter @see PHPMailer::html2text()
+     * @return string $message The transformed message Body
+     */
+    public function msgHTML($message, $basedir = '', $advanced = false)
+    {
+        preg_match_all('/(src|background)=["\'](.*)["\']/Ui', $message, $images);
+        if (array_key_exists(2, $images)) {
+            if (strlen($basedir) > 1 && substr($basedir, -1) != '/') {
+                // Ensure $basedir has a trailing /
+                $basedir .= '/';
+            }
+            foreach ($images[2] as $imgindex => $url) {
+                // Convert data URIs into embedded images
+                if (preg_match('#^data:(image[^;,]*)(;base64)?,#', $url, $match)) {
+                    $data = substr($url, strpos($url, ','));
+                    if ($match[2]) {
+                        $data = base64_decode($data);
+                    } else {
+                        $data = rawurldecode($data);
+                    }
+                    $cid = md5($url) . '@phpmailer.0'; // RFC2392 S 2
+                    if ($this->addStringEmbeddedImage($data, $cid, 'embed' . $imgindex, 'base64', $match[1])) {
+                        $message = str_replace(
+                            $images[0][$imgindex],
+                            $images[1][$imgindex] . '="cid:' . $cid . '"',
+                            $message
+                        );
+                    }
+                    continue;
+                }
+                if (
+                    // Only process relative URLs if a basedir is provided (i.e. no absolute local paths)
+                    !empty($basedir)
+                    // Ignore URLs containing parent dir traversal (..)
+                    && (strpos($url, '..') === false)
+                    // Do not change urls that are already inline images
+                    && substr($url, 0, 4) !== 'cid:'
+                    // Do not change absolute URLs, including anonymous protocol
+                    && !preg_match('#^[a-z][a-z0-9+.-]*:?//#i', $url)
+                ) {
+                    $filename = basename($url);
+                    $directory = dirname($url);
+                    if ($directory == '.') {
+                        $directory = '';
+                    }
+                    $cid = md5($url) . '@phpmailer.0'; // RFC2392 S 2
+                    if (strlen($directory) > 1 && substr($directory, -1) != '/') {
+                        $directory .= '/';
+                    }
+                    if ($this->addEmbeddedImage(
+                        $basedir . $directory . $filename,
+                        $cid,
+                        $filename,
+                        'base64',
+                        self::_mime_types((string)self::mb_pathinfo($filename, PATHINFO_EXTENSION))
+                    )
+                    ) {
+                        $message = preg_replace(
+                            '/' . $images[1][$imgindex] . '=["\']' . preg_quote($url, '/') . '["\']/Ui',
+                            $images[1][$imgindex] . '="cid:' . $cid . '"',
+                            $message
+                        );
+                    }
+                }
+            }
+        }
+        $this->isHTML(true);
+        // Convert all message body line breaks to CRLF, makes quoted-printable encoding work much better
+        $this->Body = $this->normalizeBreaks($message);
+        $this->AltBody = $this->normalizeBreaks($this->html2text($message, $advanced));
+        if (!$this->alternativeExists()) {
+            $this->AltBody = 'To view this email message, open it in a program that understands HTML!' .
+                self::CRLF . self::CRLF;
+        }
+        return $this->Body;
+    }
+
+    /**
+     * Convert an HTML string into plain text.
+     * This is used by msgHTML().
+     * Note - older versions of this function used a bundled advanced converter
+     * which was been removed for license reasons in #232.
+     * Example usage:
+     * <code>
+     * // Use default conversion
+     * $plain = $mail->html2text($html);
+     * // Use your own custom converter
+     * $plain = $mail->html2text($html, function($html) {
+     *     $converter = new MyHtml2text($html);
+     *     return $converter->get_text();
+     * });
+     * </code>
+     * @param string $html The HTML text to convert
+     * @param boolean|callable $advanced Any boolean value to use the internal converter,
+     *   or provide your own callable for custom conversion.
+     * @return string
+     */
+    public function html2text($html, $advanced = false)
+    {
+        if (is_callable($advanced)) {
+            return call_user_func($advanced, $html);
+        }
+        return html_entity_decode(
+            trim(strip_tags(preg_replace('/<(head|title|style|script)[^>]*>.*?<\/\\1>/si', '', $html))),
+            ENT_QUOTES,
+            $this->CharSet
+        );
+    }
+
+    /**
+     * Get the MIME type for a file extension.
+     * @param string $ext File extension
+     * @access public
+     * @return string MIME type of file.
+     * @static
+     */
+    public static function _mime_types($ext = '')
+    {
+        $mimes = array(
+            'xl'    => 'application/excel',
+            'js'    => 'application/javascript',
+            'hqx'   => 'application/mac-binhex40',
+            'cpt'   => 'application/mac-compactpro',
+            'bin'   => 'application/macbinary',
+            'doc'   => 'application/msword',
+            'word'  => 'application/msword',
+            'xlsx'  => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+            'xltx'  => 'application/vnd.openxmlformats-officedocument.spreadsheetml.template',
+            'potx'  => 'application/vnd.openxmlformats-officedocument.presentationml.template',
+            'ppsx'  => 'application/vnd.openxmlformats-officedocument.presentationml.slideshow',
+            'pptx'  => 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
+            'sldx'  => 'application/vnd.openxmlformats-officedocument.presentationml.slide',
+            'docx'  => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
+            'dotx'  => 'application/vnd.openxmlformats-officedocument.wordprocessingml.template',
+            'xlam'  => 'application/vnd.ms-excel.addin.macroEnabled.12',
+            'xlsb'  => 'application/vnd.ms-excel.sheet.binary.macroEnabled.12',
+            'class' => 'application/octet-stream',
+            'dll'   => 'application/octet-stream',
+            'dms'   => 'application/octet-stream',
+            'exe'   => 'application/octet-stream',
+            'lha'   => 'application/octet-stream',
+            'lzh'   => 'application/octet-stream',
+            'psd'   => 'application/octet-stream',
+            'sea'   => 'application/octet-stream',
+            'so'    => 'application/octet-stream',
+            'oda'   => 'application/oda',
+            'pdf'   => 'application/pdf',
+            'ai'    => 'application/postscript',
+            'eps'   => 'application/postscript',
+            'ps'    => 'application/postscript',
+            'smi'   => 'application/smil',
+            'smil'  => 'application/smil',
+            'mif'   => 'application/vnd.mif',
+            'xls'   => 'application/vnd.ms-excel',
+            'ppt'   => 'application/vnd.ms-powerpoint',
+            'wbxml' => 'application/vnd.wap.wbxml',
+            'wmlc'  => 'application/vnd.wap.wmlc',
+            'dcr'   => 'application/x-director',
+            'dir'   => 'application/x-director',
+            'dxr'   => 'application/x-director',
+            'dvi'   => 'application/x-dvi',
+            'gtar'  => 'application/x-gtar',
+            'php3'  => 'application/x-httpd-php',
+            'php4'  => 'application/x-httpd-php',
+            'php'   => 'application/x-httpd-php',
+            'phtml' => 'application/x-httpd-php',
+            'phps'  => 'application/x-httpd-php-source',
+            'swf'   => 'application/x-shockwave-flash',
+            'sit'   => 'application/x-stuffit',
+            'tar'   => 'application/x-tar',
+            'tgz'   => 'application/x-tar',
+            'xht'   => 'application/xhtml+xml',
+            'xhtml' => 'application/xhtml+xml',
+            'zip'   => 'application/zip',
+            'mid'   => 'audio/midi',
+            'midi'  => 'audio/midi',
+            'mp2'   => 'audio/mpeg',
+            'mp3'   => 'audio/mpeg',
+            'mpga'  => 'audio/mpeg',
+            'aif'   => 'audio/x-aiff',
+            'aifc'  => 'audio/x-aiff',
+            'aiff'  => 'audio/x-aiff',
+            'ram'   => 'audio/x-pn-realaudio',
+            'rm'    => 'audio/x-pn-realaudio',
+            'rpm'   => 'audio/x-pn-realaudio-plugin',
+            'ra'    => 'audio/x-realaudio',
+            'wav'   => 'audio/x-wav',
+            'bmp'   => 'image/bmp',
+            'gif'   => 'image/gif',
+            'jpeg'  => 'image/jpeg',
+            'jpe'   => 'image/jpeg',
+            'jpg'   => 'image/jpeg',
+            'png'   => 'image/png',
+            'tiff'  => 'image/tiff',
+            'tif'   => 'image/tiff',
+            'eml'   => 'message/rfc822',
+            'css'   => 'text/css',
+            'html'  => 'text/html',
+            'htm'   => 'text/html',
+            'shtml' => 'text/html',
+            'log'   => 'text/plain',
+            'text'  => 'text/plain',
+            'txt'   => 'text/plain',
+            'rtx'   => 'text/richtext',
+            'rtf'   => 'text/rtf',
+            'vcf'   => 'text/vcard',
+            'vcard' => 'text/vcard',
+            'xml'   => 'text/xml',
+            'xsl'   => 'text/xml',
+            'mpeg'  => 'video/mpeg',
+            'mpe'   => 'video/mpeg',
+            'mpg'   => 'video/mpeg',
+            'mov'   => 'video/quicktime',
+            'qt'    => 'video/quicktime',
+            'rv'    => 'video/vnd.rn-realvideo',
+            'avi'   => 'video/x-msvideo',
+            'movie' => 'video/x-sgi-movie'
+        );
+        if (array_key_exists(strtolower($ext), $mimes)) {
+            return $mimes[strtolower($ext)];
+        }
+        return 'application/octet-stream';
+    }
+
+    /**
+     * Map a file name to a MIME type.
+     * Defaults to 'application/octet-stream', i.e.. arbitrary binary data.
+     * @param string $filename A file name or full path, does not need to exist as a file
+     * @return string
+     * @static
+     */
+    public static function filenameToType($filename)
+    {
+        // In case the path is a URL, strip any query string before getting extension
+        $qpos = strpos($filename, '?');
+        if (false !== $qpos) {
+            $filename = substr($filename, 0, $qpos);
+        }
+        $pathinfo = self::mb_pathinfo($filename);
+        return self::_mime_types($pathinfo['extension']);
+    }
+
+    /**
+     * Multi-byte-safe pathinfo replacement.
+     * Drop-in replacement for pathinfo(), but multibyte-safe, cross-platform-safe, old-version-safe.
+     * Works similarly to the one in PHP >= 5.2.0
+     * @link http://www.php.net/manual/en/function.pathinfo.php#107461
+     * @param string $path A filename or path, does not need to exist as a file
+     * @param integer|string $options Either a PATHINFO_* constant,
+     *      or a string name to return only the specified piece, allows 'filename' to work on PHP < 5.2
+     * @return string|array
+     * @static
+     */
+    public static function mb_pathinfo($path, $options = null)
+    {
+        $ret = array('dirname' => '', 'basename' => '', 'extension' => '', 'filename' => '');
+        $pathinfo = array();
+        if (preg_match('%^(.*?)[\\\\/]*(([^/\\\\]*?)(\.([^\.\\\\/]+?)|))[\\\\/\.]*$%im', $path, $pathinfo)) {
+            if (array_key_exists(1, $pathinfo)) {
+                $ret['dirname'] = $pathinfo[1];
+            }
+            if (array_key_exists(2, $pathinfo)) {
+                $ret['basename'] = $pathinfo[2];
+            }
+            if (array_key_exists(5, $pathinfo)) {
+                $ret['extension'] = $pathinfo[5];
+            }
+            if (array_key_exists(3, $pathinfo)) {
+                $ret['filename'] = $pathinfo[3];
+            }
+        }
+        switch ($options) {
+            case PATHINFO_DIRNAME:
+            case 'dirname':
+                return $ret['dirname'];
+            case PATHINFO_BASENAME:
+            case 'basename':
+                return $ret['basename'];
+            case PATHINFO_EXTENSION:
+            case 'extension':
+                return $ret['extension'];
+            case PATHINFO_FILENAME:
+            case 'filename':
+                return $ret['filename'];
+            default:
+                return $ret;
+        }
+    }
+
+    /**
+     * Set or reset instance properties.
+     * You should avoid this function - it's more verbose, less efficient, more error-prone and
+     * harder to debug than setting properties directly.
+     * Usage Example:
+     * `$mail->set('SMTPSecure', 'tls');`
+     *   is the same as:
+     * `$mail->SMTPSecure = 'tls';`
+     * @access public
+     * @param string $name The property name to set
+     * @param mixed $value The value to set the property to
+     * @return boolean
+     * @TODO Should this not be using the __set() magic function?
+     */
+    public function set($name, $value = '')
+    {
+        if (property_exists($this, $name)) {
+            $this->$name = $value;
+            return true;
+        } else {
+            $this->setError($this->lang('variable_set') . $name);
+            return false;
+        }
+    }
+
+    /**
+     * Strip newlines to prevent header injection.
+     * @access public
+     * @param string $str
+     * @return string
+     */
+    public function secureHeader($str)
+    {
+        return trim(str_replace(array("\r", "\n"), '', $str));
+    }
+
+    /**
+     * Normalize line breaks in a string.
+     * Converts UNIX LF, Mac CR and Windows CRLF line breaks into a single line break format.
+     * Defaults to CRLF (for message bodies) and preserves consecutive breaks.
+     * @param string $text
+     * @param string $breaktype What kind of line break to use, defaults to CRLF
+     * @return string
+     * @access public
+     * @static
+     */
+    public static function normalizeBreaks($text, $breaktype = "\r\n")
+    {
+        return preg_replace('/(\r\n|\r|\n)/ms', $breaktype, $text);
+    }
+
+    /**
+     * Set the public and private key files and password for S/MIME signing.
+     * @access public
+     * @param string $cert_filename
+     * @param string $key_filename
+     * @param string $key_pass Password for private key
+     * @param string $extracerts_filename Optional path to chain certificate
+     */
+    public function sign($cert_filename, $key_filename, $key_pass, $extracerts_filename = '')
+    {
+        $this->sign_cert_file = $cert_filename;
+        $this->sign_key_file = $key_filename;
+        $this->sign_key_pass = $key_pass;
+        $this->sign_extracerts_file = $extracerts_filename;
+    }
+
+    /**
+     * Quoted-Printable-encode a DKIM header.
+     * @access public
+     * @param string $txt
+     * @return string
+     */
+    public function DKIM_QP($txt)
+    {
+        $line = '';
+        for ($i = 0; $i < strlen($txt); $i++) {
+            $ord = ord($txt[$i]);
+            if (((0x21 <= $ord) && ($ord <= 0x3A)) || $ord == 0x3C || ((0x3E <= $ord) && ($ord <= 0x7E))) {
+                $line .= $txt[$i];
+            } else {
+                $line .= '=' . sprintf('%02X', $ord);
+            }
+        }
+        return $line;
+    }
+
+    /**
+     * Generate a DKIM signature.
+     * @access public
+     * @param string $signHeader
+     * @throws phpmailerException
+     * @return string The DKIM signature value
+     */
+    public function DKIM_Sign($signHeader)
+    {
+        if (!defined('PKCS7_TEXT')) {
+            if ($this->exceptions) {
+                throw new phpmailerException($this->lang('extension_missing') . 'openssl');
+            }
+            return '';
+        }
+        $privKeyStr = !empty($this->DKIM_private_string) ? $this->DKIM_private_string : file_get_contents($this->DKIM_private);
+        if ('' != $this->DKIM_passphrase) {
+            $privKey = openssl_pkey_get_private($privKeyStr, $this->DKIM_passphrase);
+        } else {
+            $privKey = openssl_pkey_get_private($privKeyStr);
+        }
+        //Workaround for missing digest algorithms in old PHP & OpenSSL versions
+        //@link http://stackoverflow.com/a/11117338/333340
+        if (version_compare(PHP_VERSION, '5.3.0') >= 0 and
+            in_array('sha256WithRSAEncryption', openssl_get_md_methods(true))) {
+            if (openssl_sign($signHeader, $signature, $privKey, 'sha256WithRSAEncryption')) {
+                openssl_pkey_free($privKey);
+                return base64_encode($signature);
+            }
+        } else {
+            $pinfo = openssl_pkey_get_details($privKey);
+            $hash = hash('sha256', $signHeader);
+            //'Magic' constant for SHA256 from RFC3447
+            //@link https://tools.ietf.org/html/rfc3447#page-43
+            $t = '3031300d060960864801650304020105000420' . $hash;
+            $pslen = $pinfo['bits'] / 8 - (strlen($t) / 2 + 3);
+            $eb = pack('H*', '0001' . str_repeat('FF', $pslen) . '00' . $t);
+
+            if (openssl_private_encrypt($eb, $signature, $privKey, OPENSSL_NO_PADDING)) {
+                openssl_pkey_free($privKey);
+                return base64_encode($signature);
+            }
+        }
+        openssl_pkey_free($privKey);
+        return '';
+    }
+
+    /**
+     * Generate a DKIM canonicalization header.
+     * @access public
+     * @param string $signHeader Header
+     * @return string
+     */
+    public function DKIM_HeaderC($signHeader)
+    {
+        $signHeader = preg_replace('/\r\n\s+/', ' ', $signHeader);
+        $lines = explode("\r\n", $signHeader);
+        foreach ($lines as $key => $line) {
+            list($heading, $value) = explode(':', $line, 2);
+            $heading = strtolower($heading);
+            $value = preg_replace('/\s{2,}/', ' ', $value); // Compress useless spaces
+            $lines[$key] = $heading . ':' . trim($value); // Don't forget to remove WSP around the value
+        }
+        $signHeader = implode("\r\n", $lines);
+        return $signHeader;
+    }
+
+    /**
+     * Generate a DKIM canonicalization body.
+     * @access public
+     * @param string $body Message Body
+     * @return string
+     */
+    public function DKIM_BodyC($body)
+    {
+        if ($body == '') {
+            return "\r\n";
+        }
+        // stabilize line endings
+        $body = str_replace("\r\n", "\n", $body);
+        $body = str_replace("\n", "\r\n", $body);
+        // END stabilize line endings
+        while (substr($body, strlen($body) - 4, 4) == "\r\n\r\n") {
+            $body = substr($body, 0, strlen($body) - 2);
+        }
+        return $body;
+    }
+
+    /**
+     * Create the DKIM header and body in a new message header.
+     * @access public
+     * @param string $headers_line Header lines
+     * @param string $subject Subject
+     * @param string $body Body
+     * @return string
+     */
+    public function DKIM_Add($headers_line, $subject, $body)
+    {
+        $DKIMsignatureType = 'rsa-sha256'; // Signature & hash algorithms
+        $DKIMcanonicalization = 'relaxed/simple'; // Canonicalization of header/body
+        $DKIMquery = 'dns/txt'; // Query method
+        $DKIMtime = time(); // Signature Timestamp = seconds since 00:00:00 - Jan 1, 1970 (UTC time zone)
+        $subject_header = "Subject: $subject";
+        $headers = explode($this->LE, $headers_line);
+        $from_header = '';
+        $to_header = '';
+        $date_header = '';
+        $current = '';
+        foreach ($headers as $header) {
+            if (strpos($header, 'From:') === 0) {
+                $from_header = $header;
+                $current = 'from_header';
+            } elseif (strpos($header, 'To:') === 0) {
+                $to_header = $header;
+                $current = 'to_header';
+            } elseif (strpos($header, 'Date:') === 0) {
+                $date_header = $header;
+                $current = 'date_header';
+            } else {
+                if (!empty($$current) && strpos($header, ' =?') === 0) {
+                    $$current .= $header;
+                } else {
+                    $current = '';
+                }
+            }
+        }
+        $from = str_replace('|', '=7C', $this->DKIM_QP($from_header));
+        $to = str_replace('|', '=7C', $this->DKIM_QP($to_header));
+        $date = str_replace('|', '=7C', $this->DKIM_QP($date_header));
+        $subject = str_replace(
+            '|',
+            '=7C',
+            $this->DKIM_QP($subject_header)
+        ); // Copied header fields (dkim-quoted-printable)
+        $body = $this->DKIM_BodyC($body);
+        $DKIMlen = strlen($body); // Length of body
+        $DKIMb64 = base64_encode(pack('H*', hash('sha256', $body))); // Base64 of packed binary SHA-256 hash of body
+        if ('' == $this->DKIM_identity) {
+            $ident = '';
+        } else {
+            $ident = ' i=' . $this->DKIM_identity . ';';
+        }
+        $dkimhdrs = 'DKIM-Signature: v=1; a=' .
+            $DKIMsignatureType . '; q=' .
+            $DKIMquery . '; l=' .
+            $DKIMlen . '; s=' .
+            $this->DKIM_selector .
+            ";\r\n" .
+            "\tt=" . $DKIMtime . '; c=' . $DKIMcanonicalization . ";\r\n" .
+            "\th=From:To:Date:Subject;\r\n" .
+            "\td=" . $this->DKIM_domain . ';' . $ident . "\r\n" .
+            "\tz=$from\r\n" .
+            "\t|$to\r\n" .
+            "\t|$date\r\n" .
+            "\t|$subject;\r\n" .
+            "\tbh=" . $DKIMb64 . ";\r\n" .
+            "\tb=";
+        $toSign = $this->DKIM_HeaderC(
+            $from_header . "\r\n" .
+            $to_header . "\r\n" .
+            $date_header . "\r\n" .
+            $subject_header . "\r\n" .
+            $dkimhdrs
+        );
+        $signed = $this->DKIM_Sign($toSign);
+        return $dkimhdrs . $signed . "\r\n";
+    }
+
+    /**
+     * Detect if a string contains a line longer than the maximum line length allowed.
+     * @param string $str
+     * @return boolean
+     * @static
+     */
+    public static function hasLineLongerThanMax($str)
+    {
+        //+2 to include CRLF line break for a 1000 total
+        return (boolean)preg_match('/^(.{'.(self::MAX_LINE_LENGTH + 2).',})/m', $str);
+    }
+
+    /**
+     * Allows for public read access to 'to' property.
+     * @note: Before the send() call, queued addresses (i.e. with IDN) are not yet included.
+     * @access public
+     * @return array
+     */
+    public function getToAddresses()
+    {
+        return $this->to;
+    }
+
+    /**
+     * Allows for public read access to 'cc' property.
+     * @note: Before the send() call, queued addresses (i.e. with IDN) are not yet included.
+     * @access public
+     * @return array
+     */
+    public function getCcAddresses()
+    {
+        return $this->cc;
+    }
+
+    /**
+     * Allows for public read access to 'bcc' property.
+     * @note: Before the send() call, queued addresses (i.e. with IDN) are not yet included.
+     * @access public
+     * @return array
+     */
+    public function getBccAddresses()
+    {
+        return $this->bcc;
+    }
+
+    /**
+     * Allows for public read access to 'ReplyTo' property.
+     * @note: Before the send() call, queued addresses (i.e. with IDN) are not yet included.
+     * @access public
+     * @return array
+     */
+    public function getReplyToAddresses()
+    {
+        return $this->ReplyTo;
+    }
+
+    /**
+     * Allows for public read access to 'all_recipients' property.
+     * @note: Before the send() call, queued addresses (i.e. with IDN) are not yet included.
+     * @access public
+     * @return array
+     */
+    public function getAllRecipientAddresses()
+    {
+        return $this->all_recipients;
+    }
+
+    /**
+     * Perform a callback.
+     * @param boolean $isSent
+     * @param array $to
+     * @param array $cc
+     * @param array $bcc
+     * @param string $subject
+     * @param string $body
+     * @param string $from
+     */
+    protected function doCallback($isSent, $to, $cc, $bcc, $subject, $body, $from)
+    {
+        if (!empty($this->action_function) && is_callable($this->action_function)) {
+            $params = array($isSent, $to, $cc, $bcc, $subject, $body, $from);
+            call_user_func_array($this->action_function, $params);
+        }
+    }
+}
+
+/**
+ * PHPMailer exception handler
+ * @package PHPMailer
+ */
+class phpmailerException extends Exception
+{
+    /**
+     * Prettify error message output
+     * @return string
+     */
+    public function errorMessage()
+    {
+        $errorMsg = '<strong>' . $this->getMessage() . "</strong><br />\n";
+        return $errorMsg;
+    }
+}
diff --git a/app/class/smtp.class.php b/app/class/smtp.class.php
new file mode 100644
index 0000000..01cee82
--- /dev/null
+++ b/app/class/smtp.class.php
@@ -0,0 +1,1251 @@
+<?php
+/**
+ * PHPMailer RFC821 SMTP email transport class.
+ * PHP Version 5
+ * @package PHPMailer
+ * @link https://github.com/PHPMailer/PHPMailer/ The PHPMailer GitHub project
+ * @author Marcus Bointon (Synchro/coolbru) <phpmailer@synchromedia.co.uk>
+ * @author Jim Jagielski (jimjag) <jimjag@gmail.com>
+ * @author Andy Prevost (codeworxtech) <codeworxtech@users.sourceforge.net>
+ * @author Brent R. Matzelle (original founder)
+ * @copyright 2014 Marcus Bointon
+ * @copyright 2010 - 2012 Jim Jagielski
+ * @copyright 2004 - 2009 Andy Prevost
+ * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
+ * @note This program is distributed in the hope that it will be useful - WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+/**
+ * PHPMailer RFC821 SMTP email transport class.
+ * Implements RFC 821 SMTP commands and provides some utility methods for sending mail to an SMTP server.
+ * @package PHPMailer
+ * @author Chris Ryan
+ * @author Marcus Bointon <phpmailer@synchromedia.co.uk>
+ */
+class SMTP
+{
+    /**
+     * The PHPMailer SMTP version number.
+     * @var string
+     */
+    const VERSION = '5.2.23';
+
+    /**
+     * SMTP line break constant.
+     * @var string
+     */
+    const CRLF = "\r\n";
+
+    /**
+     * The SMTP port to use if one is not specified.
+     * @var integer
+     */
+    const DEFAULT_SMTP_PORT = 25;
+
+    /**
+     * The maximum line length allowed by RFC 2822 section 2.1.1
+     * @var integer
+     */
+    const MAX_LINE_LENGTH = 998;
+
+    /**
+     * Debug level for no output
+     */
+    const DEBUG_OFF = 0;
+
+    /**
+     * Debug level to show client -> server messages
+     */
+    const DEBUG_CLIENT = 1;
+
+    /**
+     * Debug level to show client -> server and server -> client messages
+     */
+    const DEBUG_SERVER = 2;
+
+    /**
+     * Debug level to show connection status, client -> server and server -> client messages
+     */
+    const DEBUG_CONNECTION = 3;
+
+    /**
+     * Debug level to show all messages
+     */
+    const DEBUG_LOWLEVEL = 4;
+
+    /**
+     * The PHPMailer SMTP Version number.
+     * @var string
+     * @deprecated Use the `VERSION` constant instead
+     * @see SMTP::VERSION
+     */
+    public $Version = '5.2.23';
+
+    /**
+     * SMTP server port number.
+     * @var integer
+     * @deprecated This is only ever used as a default value, so use the `DEFAULT_SMTP_PORT` constant instead
+     * @see SMTP::DEFAULT_SMTP_PORT
+     */
+    public $SMTP_PORT = 25;
+
+    /**
+     * SMTP reply line ending.
+     * @var string
+     * @deprecated Use the `CRLF` constant instead
+     * @see SMTP::CRLF
+     */
+    public $CRLF = "\r\n";
+
+    /**
+     * Debug output level.
+     * Options:
+     * * self::DEBUG_OFF (`0`) No debug output, default
+     * * self::DEBUG_CLIENT (`1`) Client commands
+     * * self::DEBUG_SERVER (`2`) Client commands and server responses
+     * * self::DEBUG_CONNECTION (`3`) As DEBUG_SERVER plus connection status
+     * * self::DEBUG_LOWLEVEL (`4`) Low-level data output, all messages
+     * @var integer
+     */
+    public $do_debug = self::DEBUG_OFF;
+
+    /**
+     * How to handle debug output.
+     * Options:
+     * * `echo` Output plain-text as-is, appropriate for CLI
+     * * `html` Output escaped, line breaks converted to `<br>`, appropriate for browser output
+     * * `error_log` Output to error log as configured in php.ini
+     *
+     * Alternatively, you can provide a callable expecting two params: a message string and the debug level:
+     * <code>
+     * $smtp->Debugoutput = function($str, $level) {echo "debug level $level; message: $str";};
+     * </code>
+     * @var string|callable
+     */
+    public $Debugoutput = 'echo';
+
+    /**
+     * Whether to use VERP.
+     * @link http://en.wikipedia.org/wiki/Variable_envelope_return_path
+     * @link http://www.postfix.org/VERP_README.html Info on VERP
+     * @var boolean
+     */
+    public $do_verp = false;
+
+    /**
+     * The timeout value for connection, in seconds.
+     * Default of 5 minutes (300sec) is from RFC2821 section 4.5.3.2
+     * This needs to be quite high to function correctly with hosts using greetdelay as an anti-spam measure.
+     * @link http://tools.ietf.org/html/rfc2821#section-4.5.3.2
+     * @var integer
+     */
+    public $Timeout = 300;
+
+    /**
+     * How long to wait for commands to complete, in seconds.
+     * Default of 5 minutes (300sec) is from RFC2821 section 4.5.3.2
+     * @var integer
+     */
+    public $Timelimit = 300;
+
+    /**
+     * @var array patterns to extract smtp transaction id from smtp reply
+     * Only first capture group will be use, use non-capturing group to deal with it
+     * Extend this class to override this property to fulfil your needs.
+     */
+    protected $smtp_transaction_id_patterns = array(
+        'exim' => '/[0-9]{3} OK id=(.*)/',
+        'sendmail' => '/[0-9]{3} 2.0.0 (.*) Message/',
+        'postfix' => '/[0-9]{3} 2.0.0 Ok: queued as (.*)/'
+    );
+
+    /**
+     * The socket for the server connection.
+     * @var resource
+     */
+    protected $smtp_conn;
+
+    /**
+     * Error information, if any, for the last SMTP command.
+     * @var array
+     */
+    protected $error = array(
+        'error' => '',
+        'detail' => '',
+        'smtp_code' => '',
+        'smtp_code_ex' => ''
+    );
+
+    /**
+     * The reply the server sent to us for HELO.
+     * If null, no HELO string has yet been received.
+     * @var string|null
+     */
+    protected $helo_rply = null;
+
+    /**
+     * The set of SMTP extensions sent in reply to EHLO command.
+     * Indexes of the array are extension names.
+     * Value at index 'HELO' or 'EHLO' (according to command that was sent)
+     * represents the server name. In case of HELO it is the only element of the array.
+     * Other values can be boolean TRUE or an array containing extension options.
+     * If null, no HELO/EHLO string has yet been received.
+     * @var array|null
+     */
+    protected $server_caps = null;
+
+    /**
+     * The most recent reply received from the server.
+     * @var string
+     */
+    protected $last_reply = '';
+
+    /**
+     * Output debugging info via a user-selected method.
+     * @see SMTP::$Debugoutput
+     * @see SMTP::$do_debug
+     * @param string $str Debug string to output
+     * @param integer $level The debug level of this message; see DEBUG_* constants
+     * @return void
+     */
+    protected function edebug($str, $level = 0)
+    {
+        if ($level > $this->do_debug) {
+            return;
+        }
+        //Avoid clash with built-in function names
+        if (!in_array($this->Debugoutput, array('error_log', 'html', 'echo')) and is_callable($this->Debugoutput)) {
+            call_user_func($this->Debugoutput, $str, $level);
+            return;
+        }
+        switch ($this->Debugoutput) {
+            case 'error_log':
+                //Don't output, just log
+                error_log($str);
+                break;
+            case 'html':
+                //Cleans up output a bit for a better looking, HTML-safe output
+                echo htmlentities(
+                    preg_replace('/[\r\n]+/', '', $str),
+                    ENT_QUOTES,
+                    'UTF-8'
+                ) . "<br>\n";
+                break;
+            case 'echo':
+            default:
+                //Normalize line breaks
+                $str = preg_replace('/(\r\n|\r|\n)/ms', "\n", $str);
+                echo gmdate('Y-m-d H:i:s') . "\t" . str_replace(
+                    "\n",
+                    "\n                   \t                  ",
+                    trim($str)
+                ) . "\n";
+        }
+    }
+
+    /**
+     * Connect to an SMTP server.
+     * @param string $host SMTP server IP or host name
+     * @param integer $port The port number to connect to
+     * @param integer $timeout How long to wait for the connection to open
+     * @param array $options An array of options for stream_context_create()
+     * @access public
+     * @return boolean
+     */
+    public function connect($host, $port = null, $timeout = 30, $options = array())
+    {
+        static $streamok;
+        //This is enabled by default since 5.0.0 but some providers disable it
+        //Check this once and cache the result
+        if (is_null($streamok)) {
+            $streamok = function_exists('stream_socket_client');
+        }
+        // Clear errors to avoid confusion
+        $this->setError('');
+        // Make sure we are __not__ connected
+        if ($this->connected()) {
+            // Already connected, generate error
+            $this->setError('Already connected to a server');
+            return false;
+        }
+        if (empty($port)) {
+            $port = self::DEFAULT_SMTP_PORT;
+        }
+        // Connect to the SMTP server
+        $this->edebug(
+            "Connection: opening to $host:$port, timeout=$timeout, options=" .
+            var_export($options, true),
+            self::DEBUG_CONNECTION
+        );
+        $errno = 0;
+        $errstr = '';
+        if ($streamok) {
+            $socket_context = stream_context_create($options);
+            set_error_handler(array($this, 'errorHandler'));
+            $this->smtp_conn = stream_socket_client(
+                $host . ":" . $port,
+                $errno,
+                $errstr,
+                $timeout,
+                STREAM_CLIENT_CONNECT,
+                $socket_context
+            );
+            restore_error_handler();
+        } else {
+            //Fall back to fsockopen which should work in more places, but is missing some features
+            $this->edebug(
+                "Connection: stream_socket_client not available, falling back to fsockopen",
+                self::DEBUG_CONNECTION
+            );
+            set_error_handler(array($this, 'errorHandler'));
+            $this->smtp_conn = fsockopen(
+                $host,
+                $port,
+                $errno,
+                $errstr,
+                $timeout
+            );
+            restore_error_handler();
+        }
+        // Verify we connected properly
+        if (!is_resource($this->smtp_conn)) {
+            $this->setError(
+                'Failed to connect to server',
+                $errno,
+                $errstr
+            );
+            $this->edebug(
+                'SMTP ERROR: ' . $this->error['error']
+                . ": $errstr ($errno)",
+                self::DEBUG_CLIENT
+            );
+            return false;
+        }
+        $this->edebug('Connection: opened', self::DEBUG_CONNECTION);
+        // SMTP server can take longer to respond, give longer timeout for first read
+        // Windows does not have support for this timeout function
+        if (substr(PHP_OS, 0, 3) != 'WIN') {
+            $max = ini_get('max_execution_time');
+            // Don't bother if unlimited
+            if ($max != 0 && $timeout > $max) {
+                @set_time_limit($timeout);
+            }
+            stream_set_timeout($this->smtp_conn, $timeout, 0);
+        }
+        // Get any announcement
+        $announce = $this->get_lines();
+        $this->edebug('SERVER -> CLIENT: ' . $announce, self::DEBUG_SERVER);
+        return true;
+    }
+
+    /**
+     * Initiate a TLS (encrypted) session.
+     * @access public
+     * @return boolean
+     */
+    public function startTLS()
+    {
+        if (!$this->sendCommand('STARTTLS', 'STARTTLS', 220)) {
+            return false;
+        }
+
+        //Allow the best TLS version(s) we can
+        $crypto_method = STREAM_CRYPTO_METHOD_TLS_CLIENT;
+
+        //PHP 5.6.7 dropped inclusion of TLS 1.1 and 1.2 in STREAM_CRYPTO_METHOD_TLS_CLIENT
+        //so add them back in manually if we can
+        if (defined('STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT')) {
+            $crypto_method |= STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT;
+            $crypto_method |= STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT;
+        }
+
+        // Begin encrypted connection
+        set_error_handler(array($this, 'errorHandler'));
+        $crypto_ok = stream_socket_enable_crypto(
+            $this->smtp_conn,
+            true,
+            $crypto_method
+        );
+        restore_error_handler();
+        return $crypto_ok;
+    }
+
+    /**
+     * Perform SMTP authentication.
+     * Must be run after hello().
+     * @see hello()
+     * @param string $username The user name
+     * @param string $password The password
+     * @param string $authtype The auth type (PLAIN, LOGIN, NTLM, CRAM-MD5, XOAUTH2)
+     * @param string $realm The auth realm for NTLM
+     * @param string $workstation The auth workstation for NTLM
+     * @param null|OAuth $OAuth An optional OAuth instance (@see PHPMailerOAuth)
+     * @return bool True if successfully authenticated.* @access public
+     */
+    public function authenticate(
+        $username,
+        $password,
+        $authtype = null,
+        $realm = '',
+        $workstation = '',
+        $OAuth = null
+    ) {
+        if (!$this->server_caps) {
+            $this->setError('Authentication is not allowed before HELO/EHLO');
+            return false;
+        }
+
+        if (array_key_exists('EHLO', $this->server_caps)) {
+            // SMTP extensions are available; try to find a proper authentication method
+            if (!array_key_exists('AUTH', $this->server_caps)) {
+                $this->setError('Authentication is not allowed at this stage');
+                // 'at this stage' means that auth may be allowed after the stage changes
+                // e.g. after STARTTLS
+                return false;
+            }
+
+            self::edebug('Auth method requested: ' . ($authtype ? $authtype : 'UNKNOWN'), self::DEBUG_LOWLEVEL);
+            self::edebug(
+                'Auth methods available on the server: ' . implode(',', $this->server_caps['AUTH']),
+                self::DEBUG_LOWLEVEL
+            );
+
+            if (empty($authtype)) {
+                foreach (array('CRAM-MD5', 'LOGIN', 'PLAIN', 'NTLM', 'XOAUTH2') as $method) {
+                    if (in_array($method, $this->server_caps['AUTH'])) {
+                        $authtype = $method;
+                        break;
+                    }
+                }
+                if (empty($authtype)) {
+                    $this->setError('No supported authentication methods found');
+                    return false;
+                }
+                self::edebug('Auth method selected: ' . $authtype, self::DEBUG_LOWLEVEL);
+            }
+
+            if (!in_array($authtype, $this->server_caps['AUTH'])) {
+                $this->setError("The requested authentication method \"$authtype\" is not supported by the server");
+                return false;
+            }
+        } elseif (empty($authtype)) {
+            $authtype = 'LOGIN';
+        }
+        switch ($authtype) {
+            case 'PLAIN':
+                // Start authentication
+                if (!$this->sendCommand('AUTH', 'AUTH PLAIN', 334)) {
+                    return false;
+                }
+                // Send encoded username and password
+                if (!$this->sendCommand(
+                    'User & Password',
+                    base64_encode("\0" . $username . "\0" . $password),
+                    235
+                )
+                ) {
+                    return false;
+                }
+                break;
+            case 'LOGIN':
+                // Start authentication
+                if (!$this->sendCommand('AUTH', 'AUTH LOGIN', 334)) {
+                    return false;
+                }
+                if (!$this->sendCommand("Username", base64_encode($username), 334)) {
+                    return false;
+                }
+                if (!$this->sendCommand("Password", base64_encode($password), 235)) {
+                    return false;
+                }
+                break;
+            case 'XOAUTH2':
+                //If the OAuth Instance is not set. Can be a case when PHPMailer is used
+                //instead of PHPMailerOAuth
+                if (is_null($OAuth)) {
+                    return false;
+                }
+                $oauth = $OAuth->getOauth64();
+
+                // Start authentication
+                if (!$this->sendCommand('AUTH', 'AUTH XOAUTH2 ' . $oauth, 235)) {
+                    return false;
+                }
+                break;
+            case 'NTLM':
+                /*
+                 * ntlm_sasl_client.php
+                 * Bundled with Permission
+                 *
+                 * How to telnet in windows:
+                 * http://technet.microsoft.com/en-us/library/aa995718%28EXCHG.65%29.aspx
+                 * PROTOCOL Docs http://curl.haxx.se/rfc/ntlm.html#ntlmSmtpAuthentication
+                 */
+                require_once 'extras/ntlm_sasl_client.php';
+                $temp = new stdClass;
+                $ntlm_client = new ntlm_sasl_client_class;
+                //Check that functions are available
+                if (!$ntlm_client->initialize($temp)) {
+                    $this->setError($temp->error);
+                    $this->edebug(
+                        'You need to enable some modules in your php.ini file: '
+                        . $this->error['error'],
+                        self::DEBUG_CLIENT
+                    );
+                    return false;
+                }
+                //msg1
+                $msg1 = $ntlm_client->typeMsg1($realm, $workstation); //msg1
+
+                if (!$this->sendCommand(
+                    'AUTH NTLM',
+                    'AUTH NTLM ' . base64_encode($msg1),
+                    334
+                )
+                ) {
+                    return false;
+                }
+                //Though 0 based, there is a white space after the 3 digit number
+                //msg2
+                $challenge = substr($this->last_reply, 3);
+                $challenge = base64_decode($challenge);
+                $ntlm_res = $ntlm_client->NTLMResponse(
+                    substr($challenge, 24, 8),
+                    $password
+                );
+                //msg3
+                $msg3 = $ntlm_client->typeMsg3(
+                    $ntlm_res,
+                    $username,
+                    $realm,
+                    $workstation
+                );
+                // send encoded username
+                return $this->sendCommand('Username', base64_encode($msg3), 235);
+            case 'CRAM-MD5':
+                // Start authentication
+                if (!$this->sendCommand('AUTH CRAM-MD5', 'AUTH CRAM-MD5', 334)) {
+                    return false;
+                }
+                // Get the challenge
+                $challenge = base64_decode(substr($this->last_reply, 4));
+
+                // Build the response
+                $response = $username . ' ' . $this->hmac($challenge, $password);
+
+                // send encoded credentials
+                return $this->sendCommand('Username', base64_encode($response), 235);
+            default:
+                $this->setError("Authentication method \"$authtype\" is not supported");
+                return false;
+        }
+        return true;
+    }
+
+    /**
+     * Calculate an MD5 HMAC hash.
+     * Works like hash_hmac('md5', $data, $key)
+     * in case that function is not available
+     * @param string $data The data to hash
+     * @param string $key The key to hash with
+     * @access protected
+     * @return string
+     */
+    protected function hmac($data, $key)
+    {
+        if (function_exists('hash_hmac')) {
+            return hash_hmac('md5', $data, $key);
+        }
+
+        // The following borrowed from
+        // http://php.net/manual/en/function.mhash.php#27225
+
+        // RFC 2104 HMAC implementation for php.
+        // Creates an md5 HMAC.
+        // Eliminates the need to install mhash to compute a HMAC
+        // by Lance Rushing
+
+        $bytelen = 64; // byte length for md5
+        if (strlen($key) > $bytelen) {
+            $key = pack('H*', md5($key));
+        }
+        $key = str_pad($key, $bytelen, chr(0x00));
+        $ipad = str_pad('', $bytelen, chr(0x36));
+        $opad = str_pad('', $bytelen, chr(0x5c));
+        $k_ipad = $key ^ $ipad;
+        $k_opad = $key ^ $opad;
+
+        return md5($k_opad . pack('H*', md5($k_ipad . $data)));
+    }
+
+    /**
+     * Check connection state.
+     * @access public
+     * @return boolean True if connected.
+     */
+    public function connected()
+    {
+        if (is_resource($this->smtp_conn)) {
+            $sock_status = stream_get_meta_data($this->smtp_conn);
+            if ($sock_status['eof']) {
+                // The socket is valid but we are not connected
+                $this->edebug(
+                    'SMTP NOTICE: EOF caught while checking if connected',
+                    self::DEBUG_CLIENT
+                );
+                $this->close();
+                return false;
+            }
+            return true; // everything looks good
+        }
+        return false;
+    }
+
+    /**
+     * Close the socket and clean up the state of the class.
+     * Don't use this function without first trying to use QUIT.
+     * @see quit()
+     * @access public
+     * @return void
+     */
+    public function close()
+    {
+        $this->setError('');
+        $this->server_caps = null;
+        $this->helo_rply = null;
+        if (is_resource($this->smtp_conn)) {
+            // close the connection and cleanup
+            fclose($this->smtp_conn);
+            $this->smtp_conn = null; //Makes for cleaner serialization
+            $this->edebug('Connection: closed', self::DEBUG_CONNECTION);
+        }
+    }
+
+    /**
+     * Send an SMTP DATA command.
+     * Issues a data command and sends the msg_data to the server,
+     * finializing the mail transaction. $msg_data is the message
+     * that is to be send with the headers. Each header needs to be
+     * on a single line followed by a <CRLF> with the message headers
+     * and the message body being separated by and additional <CRLF>.
+     * Implements rfc 821: DATA <CRLF>
+     * @param string $msg_data Message data to send
+     * @access public
+     * @return boolean
+     */
+    public function data($msg_data)
+    {
+        //This will use the standard timelimit
+        if (!$this->sendCommand('DATA', 'DATA', 354)) {
+            return false;
+        }
+
+        /* The server is ready to accept data!
+         * According to rfc821 we should not send more than 1000 characters on a single line (including the CRLF)
+         * so we will break the data up into lines by \r and/or \n then if needed we will break each of those into
+         * smaller lines to fit within the limit.
+         * We will also look for lines that start with a '.' and prepend an additional '.'.
+         * NOTE: this does not count towards line-length limit.
+         */
+
+        // Normalize line breaks before exploding
+        $lines = explode("\n", str_replace(array("\r\n", "\r"), "\n", $msg_data));
+
+        /* To distinguish between a complete RFC822 message and a plain message body, we check if the first field
+         * of the first line (':' separated) does not contain a space then it _should_ be a header and we will
+         * process all lines before a blank line as headers.
+         */
+
+        $field = substr($lines[0], 0, strpos($lines[0], ':'));
+        $in_headers = false;
+        if (!empty($field) && strpos($field, ' ') === false) {
+            $in_headers = true;
+        }
+
+        foreach ($lines as $line) {
+            $lines_out = array();
+            if ($in_headers and $line == '') {
+                $in_headers = false;
+            }
+            //Break this line up into several smaller lines if it's too long
+            //Micro-optimisation: isset($str[$len]) is faster than (strlen($str) > $len),
+            while (isset($line[self::MAX_LINE_LENGTH])) {
+                //Working backwards, try to find a space within the last MAX_LINE_LENGTH chars of the line to break on
+                //so as to avoid breaking in the middle of a word
+                $pos = strrpos(substr($line, 0, self::MAX_LINE_LENGTH), ' ');
+                //Deliberately matches both false and 0
+                if (!$pos) {
+                    //No nice break found, add a hard break
+                    $pos = self::MAX_LINE_LENGTH - 1;
+                    $lines_out[] = substr($line, 0, $pos);
+                    $line = substr($line, $pos);
+                } else {
+                    //Break at the found point
+                    $lines_out[] = substr($line, 0, $pos);
+                    //Move along by the amount we dealt with
+                    $line = substr($line, $pos + 1);
+                }
+                //If processing headers add a LWSP-char to the front of new line RFC822 section 3.1.1
+                if ($in_headers) {
+                    $line = "\t" . $line;
+                }
+            }
+            $lines_out[] = $line;
+
+            //Send the lines to the server
+            foreach ($lines_out as $line_out) {
+                //RFC2821 section 4.5.2
+                if (!empty($line_out) and $line_out[0] == '.') {
+                    $line_out = '.' . $line_out;
+                }
+                $this->client_send($line_out . self::CRLF);
+            }
+        }
+
+        //Message data has been sent, complete the command
+        //Increase timelimit for end of DATA command
+        $savetimelimit = $this->Timelimit;
+        $this->Timelimit = $this->Timelimit * 2;
+        $result = $this->sendCommand('DATA END', '.', 250);
+        //Restore timelimit
+        $this->Timelimit = $savetimelimit;
+        return $result;
+    }
+
+    /**
+     * Send an SMTP HELO or EHLO command.
+     * Used to identify the sending server to the receiving server.
+     * This makes sure that client and server are in a known state.
+     * Implements RFC 821: HELO <SP> <domain> <CRLF>
+     * and RFC 2821 EHLO.
+     * @param string $host The host name or IP to connect to
+     * @access public
+     * @return boolean
+     */
+    public function hello($host = '')
+    {
+        //Try extended hello first (RFC 2821)
+        return (boolean)($this->sendHello('EHLO', $host) or $this->sendHello('HELO', $host));
+    }
+
+    /**
+     * Send an SMTP HELO or EHLO command.
+     * Low-level implementation used by hello()
+     * @see hello()
+     * @param string $hello The HELO string
+     * @param string $host The hostname to say we are
+     * @access protected
+     * @return boolean
+     */
+    protected function sendHello($hello, $host)
+    {
+        $noerror = $this->sendCommand($hello, $hello . ' ' . $host, 250);
+        $this->helo_rply = $this->last_reply;
+        if ($noerror) {
+            $this->parseHelloFields($hello);
+        } else {
+            $this->server_caps = null;
+        }
+        return $noerror;
+    }
+
+    /**
+     * Parse a reply to HELO/EHLO command to discover server extensions.
+     * In case of HELO, the only parameter that can be discovered is a server name.
+     * @access protected
+     * @param string $type - 'HELO' or 'EHLO'
+     */
+    protected function parseHelloFields($type)
+    {
+        $this->server_caps = array();
+        $lines = explode("\n", $this->helo_rply);
+
+        foreach ($lines as $n => $s) {
+            //First 4 chars contain response code followed by - or space
+            $s = trim(substr($s, 4));
+            if (empty($s)) {
+                continue;
+            }
+            $fields = explode(' ', $s);
+            if (!empty($fields)) {
+                if (!$n) {
+                    $name = $type;
+                    $fields = $fields[0];
+                } else {
+                    $name = array_shift($fields);
+                    switch ($name) {
+                        case 'SIZE':
+                            $fields = ($fields ? $fields[0] : 0);
+                            break;
+                        case 'AUTH':
+                            if (!is_array($fields)) {
+                                $fields = array();
+                            }
+                            break;
+                        default:
+                            $fields = true;
+                    }
+                }
+                $this->server_caps[$name] = $fields;
+            }
+        }
+    }
+
+    /**
+     * Send an SMTP MAIL command.
+     * Starts a mail transaction from the email address specified in
+     * $from. Returns true if successful or false otherwise. If True
+     * the mail transaction is started and then one or more recipient
+     * commands may be called followed by a data command.
+     * Implements rfc 821: MAIL <SP> FROM:<reverse-path> <CRLF>
+     * @param string $from Source address of this message
+     * @access public
+     * @return boolean
+     */
+    public function mail($from)
+    {
+        $useVerp = ($this->do_verp ? ' XVERP' : '');
+        return $this->sendCommand(
+            'MAIL FROM',
+            'MAIL FROM:<' . $from . '>' . $useVerp,
+            250
+        );
+    }
+
+    /**
+     * Send an SMTP QUIT command.
+     * Closes the socket if there is no error or the $close_on_error argument is true.
+     * Implements from rfc 821: QUIT <CRLF>
+     * @param boolean $close_on_error Should the connection close if an error occurs?
+     * @access public
+     * @return boolean
+     */
+    public function quit($close_on_error = true)
+    {
+        $noerror = $this->sendCommand('QUIT', 'QUIT', 221);
+        $err = $this->error; //Save any error
+        if ($noerror or $close_on_error) {
+            $this->close();
+            $this->error = $err; //Restore any error from the quit command
+        }
+        return $noerror;
+    }
+
+    /**
+     * Send an SMTP RCPT command.
+     * Sets the TO argument to $toaddr.
+     * Returns true if the recipient was accepted false if it was rejected.
+     * Implements from rfc 821: RCPT <SP> TO:<forward-path> <CRLF>
+     * @param string $address The address the message is being sent to
+     * @access public
+     * @return boolean
+     */
+    public function recipient($address)
+    {
+        return $this->sendCommand(
+            'RCPT TO',
+            'RCPT TO:<' . $address . '>',
+            array(250, 251)
+        );
+    }
+
+    /**
+     * Send an SMTP RSET command.
+     * Abort any transaction that is currently in progress.
+     * Implements rfc 821: RSET <CRLF>
+     * @access public
+     * @return boolean True on success.
+     */
+    public function reset()
+    {
+        return $this->sendCommand('RSET', 'RSET', 250);
+    }
+
+    /**
+     * Send a command to an SMTP server and check its return code.
+     * @param string $command The command name - not sent to the server
+     * @param string $commandstring The actual command to send
+     * @param integer|array $expect One or more expected integer success codes
+     * @access protected
+     * @return boolean True on success.
+     */
+    protected function sendCommand($command, $commandstring, $expect)
+    {
+        if (!$this->connected()) {
+            $this->setError("Called $command without being connected");
+            return false;
+        }
+        //Reject line breaks in all commands
+        if (strpos($commandstring, "\n") !== false or strpos($commandstring, "\r") !== false) {
+            $this->setError("Command '$command' contained line breaks");
+            return false;
+        }
+        $this->client_send($commandstring . self::CRLF);
+
+        $this->last_reply = $this->get_lines();
+        // Fetch SMTP code and possible error code explanation
+        $matches = array();
+        if (preg_match("/^([0-9]{3})[ -](?:([0-9]\\.[0-9]\\.[0-9]) )?/", $this->last_reply, $matches)) {
+            $code = $matches[1];
+            $code_ex = (count($matches) > 2 ? $matches[2] : null);
+            // Cut off error code from each response line
+            $detail = preg_replace(
+                "/{$code}[ -]" .
+                ($code_ex ? str_replace('.', '\\.', $code_ex) . ' ' : '') . "/m",
+                '',
+                $this->last_reply
+            );
+        } else {
+            // Fall back to simple parsing if regex fails
+            $code = substr($this->last_reply, 0, 3);
+            $code_ex = null;
+            $detail = substr($this->last_reply, 4);
+        }
+
+        $this->edebug('SERVER -> CLIENT: ' . $this->last_reply, self::DEBUG_SERVER);
+
+        if (!in_array($code, (array)$expect)) {
+            $this->setError(
+                "$command command failed",
+                $detail,
+                $code,
+                $code_ex
+            );
+            $this->edebug(
+                'SMTP ERROR: ' . $this->error['error'] . ': ' . $this->last_reply,
+                self::DEBUG_CLIENT
+            );
+            return false;
+        }
+
+        $this->setError('');
+        return true;
+    }
+
+    /**
+     * Send an SMTP SAML command.
+     * Starts a mail transaction from the email address specified in $from.
+     * Returns true if successful or false otherwise. If True
+     * the mail transaction is started and then one or more recipient
+     * commands may be called followed by a data command. This command
+     * will send the message to the users terminal if they are logged
+     * in and send them an email.
+     * Implements rfc 821: SAML <SP> FROM:<reverse-path> <CRLF>
+     * @param string $from The address the message is from
+     * @access public
+     * @return boolean
+     */
+    public function sendAndMail($from)
+    {
+        return $this->sendCommand('SAML', "SAML FROM:$from", 250);
+    }
+
+    /**
+     * Send an SMTP VRFY command.
+     * @param string $name The name to verify
+     * @access public
+     * @return boolean
+     */
+    public function verify($name)
+    {
+        return $this->sendCommand('VRFY', "VRFY $name", array(250, 251));
+    }
+
+    /**
+     * Send an SMTP NOOP command.
+     * Used to keep keep-alives alive, doesn't actually do anything
+     * @access public
+     * @return boolean
+     */
+    public function noop()
+    {
+        return $this->sendCommand('NOOP', 'NOOP', 250);
+    }
+
+    /**
+     * Send an SMTP TURN command.
+     * This is an optional command for SMTP that this class does not support.
+     * This method is here to make the RFC821 Definition complete for this class
+     * and _may_ be implemented in future
+     * Implements from rfc 821: TURN <CRLF>
+     * @access public
+     * @return boolean
+     */
+    public function turn()
+    {
+        $this->setError('The SMTP TURN command is not implemented');
+        $this->edebug('SMTP NOTICE: ' . $this->error['error'], self::DEBUG_CLIENT);
+        return false;
+    }
+
+    /**
+     * Send raw data to the server.
+     * @param string $data The data to send
+     * @access public
+     * @return integer|boolean The number of bytes sent to the server or false on error
+     */
+    public function client_send($data)
+    {
+        $this->edebug("CLIENT -> SERVER: $data", self::DEBUG_CLIENT);
+        return fwrite($this->smtp_conn, $data);
+    }
+
+    /**
+     * Get the latest error.
+     * @access public
+     * @return array
+     */
+    public function getError()
+    {
+        return $this->error;
+    }
+
+    /**
+     * Get SMTP extensions available on the server
+     * @access public
+     * @return array|null
+     */
+    public function getServerExtList()
+    {
+        return $this->server_caps;
+    }
+
+    /**
+     * A multipurpose method
+     * The method works in three ways, dependent on argument value and current state
+     *   1. HELO/EHLO was not sent - returns null and set up $this->error
+     *   2. HELO was sent
+     *     $name = 'HELO': returns server name
+     *     $name = 'EHLO': returns boolean false
+     *     $name = any string: returns null and set up $this->error
+     *   3. EHLO was sent
+     *     $name = 'HELO'|'EHLO': returns server name
+     *     $name = any string: if extension $name exists, returns boolean True
+     *       or its options. Otherwise returns boolean False
+     * In other words, one can use this method to detect 3 conditions:
+     *  - null returned: handshake was not or we don't know about ext (refer to $this->error)
+     *  - false returned: the requested feature exactly not exists
+     *  - positive value returned: the requested feature exists
+     * @param string $name Name of SMTP extension or 'HELO'|'EHLO'
+     * @return mixed
+     */
+    public function getServerExt($name)
+    {
+        if (!$this->server_caps) {
+            $this->setError('No HELO/EHLO was sent');
+            return null;
+        }
+
+        // the tight logic knot ;)
+        if (!array_key_exists($name, $this->server_caps)) {
+            if ($name == 'HELO') {
+                return $this->server_caps['EHLO'];
+            }
+            if ($name == 'EHLO' || array_key_exists('EHLO', $this->server_caps)) {
+                return false;
+            }
+            $this->setError('HELO handshake was used. Client knows nothing about server extensions');
+            return null;
+        }
+
+        return $this->server_caps[$name];
+    }
+
+    /**
+     * Get the last reply from the server.
+     * @access public
+     * @return string
+     */
+    public function getLastReply()
+    {
+        return $this->last_reply;
+    }
+
+    /**
+     * Read the SMTP server's response.
+     * Either before eof or socket timeout occurs on the operation.
+     * With SMTP we can tell if we have more lines to read if the
+     * 4th character is '-' symbol. If it is a space then we don't
+     * need to read anything else.
+     * @access protected
+     * @return string
+     */
+    protected function get_lines()
+    {
+        // If the connection is bad, give up straight away
+        if (!is_resource($this->smtp_conn)) {
+            return '';
+        }
+        $data = '';
+        $endtime = 0;
+        stream_set_timeout($this->smtp_conn, $this->Timeout);
+        if ($this->Timelimit > 0) {
+            $endtime = time() + $this->Timelimit;
+        }
+        while (is_resource($this->smtp_conn) && !feof($this->smtp_conn)) {
+            $str = @fgets($this->smtp_conn, 515);
+            $this->edebug("SMTP -> get_lines(): \$data is \"$data\"", self::DEBUG_LOWLEVEL);
+            $this->edebug("SMTP -> get_lines(): \$str is  \"$str\"", self::DEBUG_LOWLEVEL);
+            $data .= $str;
+            // If 4th character is a space, we are done reading, break the loop, micro-optimisation over strlen
+            if ((isset($str[3]) and $str[3] == ' ')) {
+                break;
+            }
+            // Timed-out? Log and break
+            $info = stream_get_meta_data($this->smtp_conn);
+            if ($info['timed_out']) {
+                $this->edebug(
+                    'SMTP -> get_lines(): timed-out (' . $this->Timeout . ' sec)',
+                    self::DEBUG_LOWLEVEL
+                );
+                break;
+            }
+            // Now check if reads took too long
+            if ($endtime and time() > $endtime) {
+                $this->edebug(
+                    'SMTP -> get_lines(): timelimit reached (' .
+                    $this->Timelimit . ' sec)',
+                    self::DEBUG_LOWLEVEL
+                );
+                break;
+            }
+        }
+        return $data;
+    }
+
+    /**
+     * Enable or disable VERP address generation.
+     * @param boolean $enabled
+     */
+    public function setVerp($enabled = false)
+    {
+        $this->do_verp = $enabled;
+    }
+
+    /**
+     * Get VERP address generation mode.
+     * @return boolean
+     */
+    public function getVerp()
+    {
+        return $this->do_verp;
+    }
+
+    /**
+     * Set error messages and codes.
+     * @param string $message The error message
+     * @param string $detail Further detail on the error
+     * @param string $smtp_code An associated SMTP error code
+     * @param string $smtp_code_ex Extended SMTP code
+     */
+    protected function setError($message, $detail = '', $smtp_code = '', $smtp_code_ex = '')
+    {
+        $this->error = array(
+            'error' => $message,
+            'detail' => $detail,
+            'smtp_code' => $smtp_code,
+            'smtp_code_ex' => $smtp_code_ex
+        );
+    }
+
+    /**
+     * Set debug output method.
+     * @param string|callable $method The name of the mechanism to use for debugging output, or a callable to handle it.
+     */
+    public function setDebugOutput($method = 'echo')
+    {
+        $this->Debugoutput = $method;
+    }
+
+    /**
+     * Get debug output method.
+     * @return string
+     */
+    public function getDebugOutput()
+    {
+        return $this->Debugoutput;
+    }
+
+    /**
+     * Set debug output level.
+     * @param integer $level
+     */
+    public function setDebugLevel($level = 0)
+    {
+        $this->do_debug = $level;
+    }
+
+    /**
+     * Get debug output level.
+     * @return integer
+     */
+    public function getDebugLevel()
+    {
+        return $this->do_debug;
+    }
+
+    /**
+     * Set SMTP timeout.
+     * @param integer $timeout
+     */
+    public function setTimeout($timeout = 0)
+    {
+        $this->Timeout = $timeout;
+    }
+
+    /**
+     * Get SMTP timeout.
+     * @return integer
+     */
+    public function getTimeout()
+    {
+        return $this->Timeout;
+    }
+
+    /**
+     * Reports an error number and string.
+     * @param integer $errno The error number returned by PHP.
+     * @param string $errmsg The error message returned by PHP.
+     * @param string $errfile The file the error occurred in
+     * @param integer $errline The line number the error occurred on
+     */
+    protected function errorHandler($errno, $errmsg, $errfile = '', $errline = 0)
+    {
+        $notice = 'Connection failed.';
+        $this->setError(
+            $notice,
+            $errno,
+            $errmsg
+        );
+        $this->edebug(
+            $notice . ' Error #' . $errno . ': ' . $errmsg . " [$errfile line $errline]",
+            self::DEBUG_CONNECTION
+        );
+    }
+
+    /**
+     * Will return the ID of the last smtp transaction based on a list of patterns provided
+     * in SMTP::$smtp_transaction_id_patterns.
+     * If no reply has been received yet, it will return null.
+     * If no pattern has been matched, it will return false.
+     * @return bool|null|string
+     */
+    public function getLastTransactionID()
+    {
+        $reply = $this->getLastReply();
+
+        if (empty($reply)) {
+            return null;
+        }
+
+        foreach ($this->smtp_transaction_id_patterns as $smtp_transaction_id_pattern) {
+            if (preg_match($smtp_transaction_id_pattern, $reply, $matches)) {
+                return $matches[1];
+            }
+        }
+
+        return false;
+    }
+}