Currently, in the ArchiveWorkItem of mlbridge bot, the bot will get all sent emails according to the contents in archive repo. Then the bot will generate new emails, archive new emails and post the emails to mail server.

However, this order will cause email missing. When the bot is trying to post emails to a mail server, if connection refused. This workitem will throw exception and be done. However, in the next round, the bot would find that the new emails are already in the archive repo, then it will not generate and send the new emails again.