We have a few
rules here. One of them is:
(4) Do not 'bump up' questions if they are not answered promptly. No duplicate or cross-posting.
I have deleted your duplicate post.
As for your question,
procmail is a place to start. It can process mail upon arrival. Handling a ascii mime attachment is very trivial...you really can just strip off a few header lines and keep the rest. But there is a tool called
ripMIME that can process mime attachments.