[cf100clunk]

Here's another:

''Textbelt is a no-nonsense SMS API built for developers who just want to send SMS. Thousands of customers prefer Textbelt over other SMS providers for our ease of setup, simple, predictable pricing packages, and personal support. ''

https://textbelt.com/

[driftbyte62]

The self-hosted version of this project seems to rely on email-to-sms gateways, which many carriers have started to shut down [1]. Do you know if it's still reliable? It looks like the last commit was 2+ years ago.

[1] https://www.att.com/support/article/wireless/KM1061254/