diff --git a/etemplate/inc/class.bo_merge.inc.php b/etemplate/inc/class.bo_merge.inc.php
index a5d33e2e11..703307dba5 100644
--- a/etemplate/inc/class.bo_merge.inc.php
+++ b/etemplate/inc/class.bo_merge.inc.php
@@ -118,7 +118,8 @@ abstract class bo_merge
 			case 'application/xml':
 				return true;	// alias for text/xml, eg. ms office 2003 word format
 			case 'message/rfc822':
-				return true; // ToDo: check if you are theoretical able to send mail
+				if ($GLOBALS['egw_info']['flags']['currentapp'] == 'addressbook') return true; // ToDo: check if you are theoretical able to send mail
+				else break;
 			default:
 				if (substr($mimetype,0,5) == 'text/')
 				{