diff -Naur message_subscribe/message_subscribe.module message_subscribe_2/message_subscribe.module
--- message_subscribe/message_subscribe.module	2014-03-20 08:35:54.000000000 +0000
+++ message_subscribe_2/message_subscribe.module	2014-07-15 21:33:20.000000000 +0100
@@ -158,7 +158,7 @@
     }
   }
 
-  if ($use_queue) {
+  if ($use_queue && empty($subscribe_options['queue'])) {
     // Add item to the queue.
     $task = array(
       'mid' => $message->mid,