Index: branches/5.2.x/core/kernel/utility/email.php
===================================================================
diff -u -N -r15230 -r15248
--- branches/5.2.x/core/kernel/utility/email.php	(.../email.php)	(revision 15230)
+++ branches/5.2.x/core/kernel/utility/email.php	(.../email.php)	(revision 15248)
@@ -1,6 +1,6 @@
 <?php
 /**
- * @version	$Id: email.php 15230 2012-03-26 10:13:31Z alex $
+ * @version	$Id: email.php 15248 2012-03-30 16:19:34Z alex $
  * @package	In-Portal
  * @copyright	Copyright (C) 1997 - 2012 Intechnic. All rights reserved.
  * @license	  GNU/GPL
@@ -556,13 +556,13 @@
 	{
 		$add_recipient = Array ();
 
-		if ( array_key_exists('to_email', $this->params) ) {
+		if ( isset($this->params['to_email']) && $this->params['to_email'] ) {
 			$add_recipient['RecipientName'] = '';
 			$add_recipient['RecipientAddressType'] = EmailEvent::ADDRESS_TYPE_EMAIL;
 			$add_recipient['RecipientAddress'] = $this->params['to_email'];
 		}
 
-		if ( array_key_exists('to_name', $this->params) ) {
+		if ( isset($this->params['to_name']) && $this->params['to_name'] ) {
 			$add_recipient['RecipientName'] = $this->params['to_name'];
 		}