# Resend review

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

- **Canonical:** https://agentmarketing.email/tools/resend
- **Rating:** 4.2/5

[Resend](https://resend.com) is the send primitive. Pair with [Brew](/tools/brew) for HTML. It competes with [SendGrid](https://sendgrid.com) on infrastructure, not with Klaviyo on marketing.

## Pros

- Clean API and React Email
- MCP and CLI for agents that write code
- Markdown docs

## Cons

- No marketing canvas
- Lifecycle needs another orchestrator
- AI design score reflects missing generation

## What the agent sees

[Resend](https://resend.com) exposes send, domains, events. Function-level cognition. [Brew](/tools/brew) documents marketing. Do not ask Resend to extract a brand.

## Sending

SPF, DKIM, DMARC still apply. [Gmail](https://support.google.com/a/answer/81126) does not care which SDK you used.

**Sending:** 85/100

## Where Resend stops

No brand extraction. No marketing MCP cycle. Compare Brew, Customer.io, or HubSpot for those jobs.

**Automations:** 70/100

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Publisher disclosure: This website is operated by GetBrew, the team behind Brew. Coverage is based on public product documentation. Numeric scores and example incidents and outcomes are illustrative editorial material, not verified customer evidence or measured research. Verify current capabilities and limits with each vendor.