MMS - Multimedia Message Service - Picture, Video and Voice messaging 
from phone to phone.
SMS - Simple Message Service - Text Messaging.

Robert Nesius wrote:
> Just in the spirit of sharing hopefully useful info... apparently  
> <10digitnumber>@mms.att.net <http://mms.att.net> will result in an 
> SMTP -> MMS translation.  II'm not sure what MMS is - some quick 
> googling indicated it's a Microsoft protocol?   I also found this:
>
> You can also go to http://mymessages.wireless.att.com, register and 
> request a name alias so you can have youralias at txt.att.net 
> <mailto:youralias at txt.att.net> show up instead of 
> yournumber at txt.att.net <mailto:yournumber at txt.att.net>. Just in case 
> you didn't want your phone number being given out so readily.
>
> -Rob
>
> On Mon, Dec 14, 2009 at 1:54 PM, Ryan Coleman <ryan.coleman at cwis.biz 
> <mailto:ryan.coleman at cwis.biz>> wrote:
>
>     MMS: vzpix.com <http://vzpix.com>
>     SMS: vztext.com <http://vztext.com>
>
>
>     Eric F Crist wrote:
>
>         On Dec 14, 2009, at 13:29:25, Robert Nesius wrote:
>
>          
>
>             On Mon, Dec 14, 2009 at 12:50 PM, Carl Wilhelm Soderstrom
>             <chrome at real-time.com <mailto:chrome at real-time.com>> wrote:
>             On 12/14 11:28 , Donovan wrote:
>
>             Basically, take your message, pipe it to mail, and use
>             that to send it to
>             the e-mail address which will then send the page.
>
>
>             This prompted me to do a little digging.  For attwireless
>             folks the first 160 characters of emails sent to the
>             following address will be sent as an SMS text...
>             <10-digit-number>@txt.att.net <http://txt.att.net>.
>                
>
>
>         Most providers have an email to SMS gateway.  There are lists
>         all over.  T-Mobile does <phone#>@tmomail.net
>         <http://tmomail.net> and I know both verizon and sprint have
>         similar gateways.
>          
>
>
>