I'm testing out an idea I have to build a mobile subscription service that sends out daily SMS content. I've found a lot of different companies that service delivery where I generally see prices of .03 USD per text or lower.
The trickier side is the billing. I am looking to test both premium SMS and subscription billing. Do any stackers know of any solid companies that do this at least for the US? Ideally I want to go through one of the established companies as I do not have the experience or bankroll to get my own shortcode etc. yet.
Thanks!