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

Claude Opus 4.5, and why evaluating new LLMs is increasingly difficult - 24th November 2025
sqlite-utils 4.0a1 has several (minor) backwards incompatible changes - 24th November 2025
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kapow 1 mobile 40 sms 4

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