Index: roundup/mailer.py
===================================================================
--- roundup/mailer.py	(revision 4315)
+++ roundup/mailer.py	(working copy)
@@ -117,7 +117,7 @@
         message = self.get_standard_message(to, subject, author)
         message.set_payload(content)
         encode_quopri(message)
-        self.smtp_send(to, str(message))
+        self.smtp_send(to, message.as_string())
 
     def bounce_message(self, bounced_message, to, error,
                        subject='Failed issue tracker submission'):
@@ -163,7 +163,7 @@
 
         # send
         try:
-            self.smtp_send(to, str(message))
+            self.smtp_send(to, message.as_string())
         except MessageSendError:
             # squash mail sending errors when bouncing mail
             # TODO this *could* be better, as we could notify admin of the
Index: roundup/roundupdb.py
===================================================================
--- roundup/roundupdb.py	(revision 4315)
+++ roundup/roundupdb.py	(working copy)
@@ -499,9 +499,9 @@
                 encode_quopri(message)
 
             if first:
-                mailer.smtp_send(sendto + bcc_sendto, str(message))
+                mailer.smtp_send(sendto + bcc_sendto, message.as_string())
             else:
-                mailer.smtp_send(sendto, str(message))
+                mailer.smtp_send(sendto, message.as_string())
             first = False
 
     def email_signature(self, nodeid, msgid):