This doesn't quite feel like it's getting to the root cause. Why don't we get a mailman.email.message.Message object here? -- https://code.launchpad.net/~abompard/mailman/bug-1130696/+merge/243226 Your team Mailman Coders is requested to review the proposed merge of lp:~abompard/mailman/bug-1130696 into lp:mailman.