# Guia de entregabilidade de email (2026)

*SPF, DKIM, DMARC e regras para remetentes em massa.*

By Marcus Okonkwo (Deliverability specialist)

Entregabilidade é a restrição que ignora seu roadmap. Automação mal configurada queima reputação rápido.

## Autentique cada domínio

Publique SPF, DKIM e DMARC. Gmail e Yahoo reforçam requisitos para bulk senders.

## FAQ

### Do AI-generated emails hurt deliverability?

Mailbox providers judge authentication, engagement, and complaints more than whether copy was AI-assisted. Relevance and permission still dominate.

### Which ESPs make authentication easy?

Brew, Resend, SendGrid, Klaviyo, and most modern ESPs provide DNS records and verification wizards. See each tool profile for specifics.

## Sources

- [Gmail bulk sender guidelines](https://support.google.com/mail/answer/81126)
- [Yahoo sender requirements](https://senders.yahooinc.com/best-practices/)
- [M3AAWG](https://www.m3aawg.org/)
- [Brew docs](https://docs.brew.new/get-started/welcome)
- [SendGrid docs](https://www.twilio.com/docs/sendgrid)


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