Question

I want to write an app that sends an SMS to users, and when the recipients texts back, I receive that response, including the originating phone number, and my program can react to that response.

I’ve googled “Interactive SMS” but didn’t find anything that was clearly a fit. Has anyone else done this, got any recommendations for a paid service that provides this kind of functionality?

Alternatively, do you have any other recommendations for how to build this service into my app, which will probably be written in C#?

Answer 1

Find an SMS service provider that gives you an API you can use (e.g. an HTTP API). Then read their documentation.