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

What happens if AI labs train for pelicans riding bicycles? - 13th November 2025
Reverse engineering Codex CLI to get GPT-5-Codex-Mini to draw me a pelican - 9th November 2025
Video + notes on upgrading a Datasette plugin for the latest 1.0 alpha, with help from uv and OpenAI Codex CLI - 6th November 2025

kapow 1 mobile 40 sms 4

Monthly briefing

Sponsor me for $10/month and get a curated email digest of the month's most important LLM developments.

Pay me to send you less!

Sponsor & subscribe