diff --git a/mail/inc/class.mail_bo.inc.php b/mail/inc/class.mail_bo.inc.php
index 8ef6024106..a4ef6806c3 100644
--- a/mail/inc/class.mail_bo.inc.php
+++ b/mail/inc/class.mail_bo.inc.php
@@ -19,5 +19,4 @@
  */
 class mail_bo extends emailadmin_imapbase
 {
-	
 }
diff --git a/mail/inc/class.mail_bosieve.inc.php b/mail/inc/class.mail_bosieve.inc.php
index 321de6a53b..492507f3f2 100644
--- a/mail/inc/class.mail_bosieve.inc.php
+++ b/mail/inc/class.mail_bosieve.inc.php
@@ -3,7 +3,7 @@
  * EGroupware EMail - timed vacation
  *
  * @link http://www.stylite.de
- * @package felamimail
+ * @package mail
  * @author Ralf Becker <rb@stylite.de>
  * @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
  * @version $Id$
diff --git a/mail/inc/class.mail_ui.inc.php b/mail/inc/class.mail_ui.inc.php
index 0e92a1585b..61324a7e53 100644
--- a/mail/inc/class.mail_ui.inc.php
+++ b/mail/inc/class.mail_ui.inc.php
@@ -1887,6 +1887,10 @@ unset($query['actions']);
 					else $data["flags"][$flag] = $flag;
 				}
 			}
+			$data['dispositionnotificationto'] = $header['DISPOSITION-NOTIFICATION-TO'];
+			if (($header['mdnsent']||$header['mdnnotsent']|$header['seen'])&&isset($data['dispositionnotificationto'])) unset($data['dispositionnotificationto']);
+			if ($header['mdnsent']) $data["flags"]['mdnsent'];
+			if ($header['mdnnotsent']) $data["flags"]['mdnnotsent'];
 			$data['attachmentsPresent'] = $imageTag;
 			$data['attachmentsBlock'] = $imageHTMLBlock;
 			$data['address'] = ($_folderType?$data["toaddress"]:$data["fromaddress"]);
@@ -4077,6 +4081,21 @@ $this->partID = $partID;
 		}
 	}
 
+	/**
+	 * sendMDN, ...
+	 *
+	 * @param array _messageList list of UID's
+	 *
+	 * @return nothing
+	 */
+	function ajax_sendMDN($_messageList)
+	{
+		if(mail_bo::$debug); error_log(__METHOD__."->".array2string($_messageList));
+		$uidA = self::splitRowID($_messageList['msg'][0]);
+		$folder = $uidA['folder']; // all messages in one set are supposed to be within the same folder
+		$this->mail_bo->sendMDN($uidA['msgUID'],$folder);
+	}
+
 	/**
 	 * flag messages as read, unread, flagged, ...
 	 *
diff --git a/mail/js/app.js b/mail/js/app.js
index 8577d5822d..bb9962d230 100644
--- a/mail/js/app.js
+++ b/mail/js/app.js
@@ -650,6 +650,27 @@ app.classes.mail = AppJS.extend(
 			this.mail_removeRowClass(messages,'unseen');
 			// reduce counter without server roundtrip
 			this.mail_reduceCounterWithoutServerRoundtrip();
+			if (typeof dataElem.data.dispositionnotificationto != 'undefined' && typeof dataElem.data.flags.mdnsent == 'undefined' && typeof dataElem.data.flags.mdnnotsent == 'undefined')
+			{
+				var buttons = [
+					{text: this.egw.lang("Yes"), id: "mdnsent"},
+					{text: this.egw.lang("No"), id:"mdnnotsent"}
+				];
+				et2_dialog.show_dialog(function(_button_id, _value) {
+					switch (_button_id)
+					{
+						case "mdnsent":
+							egw.jsonq('mail.mail_ui.ajax_sendMDN',[messages]);
+							egw.jsonq('mail.mail_ui.ajax_flagMessages',['mdnsent', messages, true]);
+							return;
+						case "mdnnotsent":
+							egw.jsonq('mail.mail_ui.ajax_flagMessages',['mdnnotsent', messages, true]);
+					}
+				},
+				this.egw.lang("The message sender has requested a response to indicate that you have read this message. Would you like to send a receipt?"),
+				this.egw.lang("Confirm"),
+				messages, buttons);
+			}
 			egw.jsonq('mail.mail_ui.ajax_flagMessages',['read', messages, false]);
 		}
 		// Pre-load next email already so user gets it faster