Index: program/steps/mail/func.inc
===================================================================
--- program/steps/mail/func.inc	(revision 29b39739df3393f138dbdd98591e1331af0393ad)
+++ program/steps/mail/func.inc	(revision 93681d1e5e473359337b7a41046eb97e5644a218)
@@ -1541,4 +1541,5 @@
       $to      = $headers_enc['To'];
       $subject = $headers_enc['Subject'];
+      $header_str = rtrim($header_str);
 
       if ($delim != "\r\n") {