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Field notes on shipping email.

Deliverability, templates, webhooks, and the parts of the API that don't show up in the quickstart.

LatestJul 7, 2026

One-Click Unsubscribe: RFC 8058 and the Gmail and Yahoo Sender Requirements

How RFC 8058 one-click unsubscribe works: the List-Unsubscribe headers, Gmail and Yahoo bulk sender rules, spam-rate limits, and common mistakes.

transactionalJul 7, 2026
Transactional Email vs Marketing Email: Why the Distinction Matters
What separates transactional from marketing email, and why the split shapes consent, deliverability reputation, sending domains, and suppression lists.
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announcementsDec 7, 2024
Welcome to the Samva Blog
Welcome to the Samva blog. Notes from the team on shipping transactional and product email through one typed API.
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