AT&T MMS Email?

Apple is pushing the iPhone users towards using email since the iPhone has a real email client. I want to send pictures to other phones using email.
When you select a picture on your iPhone and it asks you what email address to send to, enter the persons phone number in an email format, for example... 1234567890@mms.att.com. I would like to know about other Wireless providers. Anyone?

AT&T MMS Email? Here's how to send Pictures to other phones. The address you send it to is generally along the pattern of TheirPhoneNumber@mms.theirprovidername.com
Here is the full listing:

Alltel = xxxxxxxxxx@message.alltel.com
AT&T = xxxxxxxxxx@mms.att.net
Boost Mobile = xxxxxxxxxx@myboostmobile.com
Cingular (AT&T) = xxxxxxxxxx@mms.mycingular.com
Einstein PCS = xxxxxxxxxx@einsteinmms.com
Sprint = xxxxxxxxxx@messaging.sprintpcs.com
T-Mobile = xxxxxxxxxx@tmomail.net
US Cellular = xxxxxxxxxx@mms.uscc.net
Verizon Wireless = xxxxxxxxxx@vzwpix.com
Virgin Mobile = xxxxxxxxxx@vmobl.com