Checking to see if anyone has worked with TextMagic integration with B4a https://www.textmagic.com/ and could get me started in the right direction towards using their API from within B4a. I would like to use this for a central SMS notification system.
They offer a REST Api. It should be easy to call this Api with okhttputils2.
Based on the prices i would suggest to first check Twilio as @JohnC already suggested.