I know it's possible and if i had the resources available i would probably start on it myself but i think that some of you genius devs out there should start looking at making an alternate email application for the iphone, with the ability to attach multiple files to one email, to have some sort of filtering (not saying all out spam filtering i know that would be huge) but just something to be able to flag messages that you designate from certain people or containing certain words in the subject.

Just my thought