The only app that sends and receives MMS (excluding the 3.0 beta software for the iPhone) is swirlyMMS for jailbroken phones. It can be quite a chore to get it working on at&t. If you can get it working easily...it will be worth the 8 bucks to have it till summer when 3.0 goes live...if not, I would simply use the email work around and wait on 3.0.