I suggest you look into procmail, as it allows you to filter mail headers and message body, and can even put those messages in separate folders (man procmail).
<rant> On a personal note, next time *please* rephrase your question; the "I need" stuff to me works like a red rag to a bull (reverse, that is) in ignoring it as long as I can. It's simple, if you didn't need anything you wouldn't be here, and to me it is on a par with other stuff where people just command something to show up on a silver platter without bothering to come up with an example themselves to show they at least tried, or got stuck somewhere, or don't read/do research themselves. Examples are like: "REQ (something)" or "Need (something) or "Send mail to" and the like. Maybe this sounds harsh, but y'all know what I mean (I hope).</rant>
A good Xmas to y'all.