Simon Willison’s Weblog

Kapow SMS Gateway. Looks like a solid provider for sending and receiving SMS messages, with APIs provided over both e-mail and HTTP in both directions.

Posted 8th December 2008 at 5:05 pm

Recent articles

My review of Claude's new Code Interpreter, released under a very confusing name - 9th September 2025
Recreating the Apollo AI adoption rate chart with GPT-5, Python and Pyodide - 9th September 2025
GPT-5 Thinking in ChatGPT (aka Research Goblin) is shockingly good at search - 6th September 2025

kapow 1 mobile 40 sms 4

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