I have been using APRS for awhile for tracking, sending messages to other APRS uses, sending messages through the International Space Station...etc.
Recently I finally got around to playing with SMS Text and Email.

I was successful at sending both SMS and email through my radio. Just have to work on setting up Aliases so that my wife's # won't be blasted on the air waves, but only a title that I choose for her.

The SMS recipient can text back, but legally they should be a licensed ham to do so as their message is transmitted over RF.

You must be within a couple of hops of an I-Gate for the SMS or email to work.