diff -r 000000000000 -r 7f95f8617b0b vendor/swiftmailer/lib/classes/Swift/Plugins/ImpersonatePlugin.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/swiftmailer/lib/classes/Swift/Plugins/ImpersonatePlugin.php	Sat Sep 24 15:40:41 2011 +0200
@@ -0,0 +1,68 @@
+<?php
+/*
+ * This file is part of SwiftMailer.
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Replaces the sender of a message.
+ *
+ * @package Swift
+ * @subpackage Plugins
+ * @author Arjen Brouwer
+ */
+class Swift_Plugins_ImpersonatePlugin implements \Swift_Events_SendListener {
+
+    /**
+     * The sender to impersonate.
+     * 
+     * @var String
+     * @access private
+     */
+    private $_sender;
+
+    /**
+     * Create a new ImpersonatePlugin to impersonate $sender.
+     * 
+     * @param string $sender address
+     */
+    public function __construct($sender) {
+        $this->_sender = $sender;
+    }
+
+    /**
+     * Invoked immediately before the Message is sent.
+     * 
+     * @param Swift_Events_SendEvent $evt
+     */
+    public function beforeSendPerformed(Swift_Events_SendEvent $evt) {
+        $message = $evt->getMessage();
+        $headers = $message->getHeaders();
+
+        // save current recipients
+        $headers->addPathHeader('X-Swift-Return-Path', $message->getReturnPath());
+
+        // replace them with the one to send to
+        $message->setReturnPath($this->_sender);
+    }
+
+    /**
+     * Invoked immediately after the Message is sent.
+     * 
+     * @param Swift_Events_SendEvent $evt
+     */
+    public function sendPerformed(Swift_Events_SendEvent $evt) {
+        $message = $evt->getMessage();
+
+        // restore original headers
+        $headers = $message->getHeaders();
+
+        if ($headers->has('X-Swift-Return-Path')) {
+            $message->setReturnPath($headers->get('X-Swift-Return-Path')->getAddress());
+            $headers->removeAll('X-Swift-Return-Path');
+        }
+    }
+}