Index: t3lib/mail/class.t3lib_mail_swiftmaileradapter.php
===================================================================
--- t3lib/mail/class.t3lib_mail_swiftmaileradapter.php	(Revision 10332)
+++ t3lib/mail/class.t3lib_mail_swiftmaileradapter.php	(Arbeitskopie)
@@ -81,9 +81,7 @@
 		$this->message->setSubject($subject);
 			// handle recipients
 		$toAddresses = $this->parseAddresses($to);
-		if (count($toAddresses) > 0) {
-			$this->message->setTo($toAddresses);
-		}
+		$this->message->setTo($toAddresses);
 			// handle additional headers
 		$headers = t3lib_div::trimExplode(LF, $additionalHeaders, TRUE);
 		$this->messageHeaders = $this->message->getHeaders();