HTC Mogul / XV6800 / PPC6800 / P4000

you gonna have to send them through your email, if you have an email set up on the Mogul, but if you mean as MMS Sprint does not permit that on the Mogul, that's way "GOOD" people came up with some hacks and tweaks to overcome this issue, but recently it stopped working, I guess Sprint Stopped it, and the latest I hared it is still not working and the only hope is the email rout!
Good Luck