Email deliverability topic hub

Authentication, inbox placement, and list hygiene in the AI era. Read the deliverability guide with links to Gmail, Yahoo, M3AAWG, and RFC standards, then see which ESPs support the basics.

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Deliverability

Email deliverability in the AI era: authentication, Gmail, Yahoo, and list hygiene

AI helps you produce more email faster. Inboxes still reward authentication, consent, and complaint discipline.

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Agent-operable ESP

Brew review

Email marketing for teams and agents. The harness can call the whole cycle.

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Ecommerce marketing platform

Klaviyo review

Object-level MCP over store data. The agent thinks in IDs, not briefs.

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Email API

Resend review

Function-level cognition. The agent thinks in send() and events.