I'm using carrier-specific addresses to send email to SMS, which works fine. In reference to the answer of this question http://stackoverflow.com/questions/1179854/limitations-on-sms-messages-sent-using-free-email-sms-gateways is there any websites or other resources that list the format that is delivered for each carrier. ATT for example delivers the SMS with some added formatting that is not present with T-Mobile.
I realize this is not a coding question, but since I can only see this question arising for someone that is creating email to SMS specific applications, it seems relevant to SO.