Field notes on shipping email.
Deliverability, templates, webhooks, and the parts of the API that don't show up in the quickstart.
- deliverability
Why are your emails going to spam? A troubleshooting guide
Diagnose emails going to spam: distinguish delivery failures from spam placement, inspect authentication, and check reputation, recipients, and content.
Read post - deliverability
What Is an Email Suppression List? A Guide for Product Teams
Understand why email addresses are suppressed, how suppression differs from unsubscribe, and what to check before removing a block.
Read post - announcements
Introducing Samva: email for product teams
Send product email, edit email templates, and handle replies in your application. Get started with Samva’s API, dashboard, and guides.
Read post - deliverability
How to warm up a new email domain
Learn how to warm up a new email domain, build an email warmup schedule, and monitor sender reputation before increasing your sending volume.
Read post - deliverability
Gmail BIMI Logos and Verified Checkmarks
Learn what Gmail requires for BIMI brand logos, why its verified checkmark needs a VMC, and how to troubleshoot DNS, SVG, and certificate evidence.
Read post - compliance
One-Click Unsubscribe: Gmail, Yahoo, and RFC 8058
Implement RFC 8058 one-click unsubscribe correctly: required headers, HTTPS POST behavior, Gmail and Yahoo sender rules, and common failure modes.
Read post - transactional
Transactional vs Marketing Email: Key Differences
What separates transactional from marketing email, and why the split shapes consent, deliverability reputation, sending domains, and suppression lists.
Read post
