Index: branches/5.2.x/core/units/helpers/mailing_list_helper.php
===================================================================
diff -u -N -r16598 -r16599
--- branches/5.2.x/core/units/helpers/mailing_list_helper.php	(.../mailing_list_helper.php)	(revision 16598)
+++ branches/5.2.x/core/units/helpers/mailing_list_helper.php	(.../mailing_list_helper.php)	(revision 16599)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: mailing_list_helper.php 16598 2017-07-27 09:19:55Z alex $
+* @version	$Id: mailing_list_helper.php 16599 2017-07-27 09:24:06Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -269,14 +269,22 @@
 		/**
 		 * Sent given messages from email queue.
 		 *
+		 * @param array|null $messages Messages.
+		 *
 		 * @return integer
 		 */
-		function processQueue()
+		function processQueue(&$messages = null)
 		{
 			/** @var kEmailSendingHelper $esender */
 			$esender = $this->Application->recallObject('EmailSender');
 
-			$messages = $this->getMessages();
+			if ( !isset($messages) ) {
+				$messages = $this->getMessages();
+			}
+			else {
+				kUtil::deprecatedArgument(__METHOD__, '5.2.2-B2', 'The "$messages" parameter is deprecated.');
+			}
+
 			$message_count = count($messages);
 
 			if ( !$message_count ) {