Index: branches/RC/core/kernel/utility/email_send.php
===================================================================
diff -u -N -r10098 -r11319
--- branches/RC/core/kernel/utility/email_send.php	(.../email_send.php)	(revision 10098)
+++ branches/RC/core/kernel/utility/email_send.php	(.../email_send.php)	(revision 11319)
@@ -1905,7 +1905,7 @@
 		 * Performs mail delivery (supports delayed delivery)
 		 *
 		 * @param string $mesasge message, if not given, then use composed one
-		 * @param bool $immediate_send send message now
+		 * @param bool $immediate_send send message now or MailingId
 		 * @param bool $immediate_clear clear message parts after message is sent
 		 *
 		 */
@@ -1933,7 +1933,7 @@
 			}
 
 			if ($composed) {
-				if ($immediate_send) {
+				if ($immediate_send === true) {
 					$send_method = 'Send'.$this->sendMethod;
 					$result = $this->$send_method($message_headers, $message_body);
 
@@ -1949,6 +1949,7 @@
 						'Queued' => adodb_mktime(),
 						'SendRetries' => 0,
 						'LastSendRetry' => 0,
+						'MailingId' => (int)$immediate_send,
 					);
 					$fields_hash['MessageHeaders'] = serialize($message_headers);
 					$fields_hash['MessageBody'] =& $message_body;
@@ -1961,7 +1962,7 @@
 			}
 
 			// if not immediate send, then send result is positive :)
-			return !$immediate_send ? true : false;
+			return $immediate_send !== true ? true : false;
 		}
 	}