Developing an app to send text messages via email?

[Daringescape]

Does anyone have any experience or knowledge on building a web (or executable) app that sends text messages over the internet without knowing the carrier of the cell phone number? (i.e. no need to add the @att.net etc. at the end of the phone number)

Any help would be appreciated - I am doing some research and am having a hard time finding any info out there.

[Doctor Q]

Please do not start duplicate threads.