I'm using Handcent and noticed I can receive mms files fine, although they won't load unless I view them in the default messenger app first. But when I send someone a photo I've taken, and resized, they won't get it for several hours.
So far I've only done this to people on AT&T, and iPhones to be exact.
So far I've only done this to people on AT&T, and iPhones to be exact.