Deliverability

3 posts on deliverability for AI agents that send and receive email.

19 June 2026 · 5 min read

SPF, DKIM, and DMARC explained for developers

What each record does, how alignment actually works, the exact DNS entries to publish, and how to move to enforcement without blocking your own mail.

29 May 2026 · 4 min read

Why Gmail SMTP fails in production

Gmail SMTP works on your laptop and breaks under real load. App passwords, daily limits, spoofed From addresses, and DMARC alignment, explained with the fix.

8 May 2026 · 5 min read

Why your password reset email goes to spam

Reset mail looks like phishing to a filter: urgent language, a link, a low-engagement sender. The authentication, content, and infrastructure fixes that work.