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How email delivery actually works.

Technical writing about authentication, sender reputation and why messages end up in the wrong folder. No announcements, no roadmap posts.

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deliverability · 10 Sept 2026 · 3 min read

Why your password reset emails land in spam

A message can pass SPF and pass DKIM and still fail DMARC, because alignment asks a different question than either of them. Here is how to tell which check is failing and why.

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integration · 29 Aug 2026 Sending email from an n8n workflow without wrecking your domain Automation platforms make it trivial to send mail and equally trivial to send it from an unauthenticated host at three in the morning. What to configure, and what to check afterwards. 3 min read operations · 21 Aug 2026 Reverse DNS rots quietly, and your mail goes with it Forward-confirmed reverse DNS is set once and then forgotten. When a provider reassigns an IP nothing errors — mail that delivered fine last quarter simply starts getting filtered. 3 min read