diff --git a/program/steps/mail/func.inc b/program/steps/mail/func.inc
index 454650628..ae23d4a6d 100644
--- a/program/steps/mail/func.inc
+++ b/program/steps/mail/func.inc
@@ -639,6 +639,8 @@ function rcmail_check_safe(&$message)
             $message->set_safe(true);
           }
         }
+
+        $RCMAIL->plugins->exec_hook('message_check_safe', array('message' => $message));
         break;
 
       case 2: // always