Simon Willison’s Weblog

Spammers embrace email authentication. “More spam than legitimate email is currently sent using Sender Policy Framework”

Posted 3rd September 2004 at 6:43 pm

Recent articles

A new way to extract detailed transcripts from Claude Code - 25th December 2025
Cooking with Claude - 23rd December 2025
Your job is to deliver code you have proven to work - 18th December 2025

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