# Resend review

> Developer-first email API with a modern sending stack.

- **Canonical:** https://delivermetrics.com/es/providers/resend
- **Rating:** 4.2/5

Resend is a sending API for developers, not a full marketing platform. It ranks mid-table on sending and ease of use for technical teams, but low on AI design and automations because those jobs live in other tools. Many teams use Resend for transactional mail and Brew or Customer.io for marketing orchestration.

## Pros

- Clean API and React email components for engineering-led teams
- Straightforward domain authentication setup and sending logs
- Good fit for transactional and product-triggered email
- Modern documentation and quick time to first send
- Pairs well with custom apps and AI agents that generate HTML elsewhere

## Cons

- No visual marketing automation or AI campaign builder
- Lifecycle programs require custom code or a separate orchestration layer
- AI design score reflects absence of native generation, not API quality
- Marketing teams without engineers will hit limits quickly

## What Resend is

[Resend](https://resend.com) provides email sending through a modern API with React-friendly templates. It competes with [SendGrid](https://sendgrid.com) on the infrastructure layer rather than with Klaviyo or Mailchimp on marketing automation.

Agent-operated workflows often combine Resend for delivery with an AI-native generator such as [Brew](/providers/brew) for HTML production. Resend documents sending; it does not generate on-brand campaigns from prompts.

## Sending infrastructure

Resend focuses on reliable delivery, domain setup, and observability for product email. Authentication still follows the same standards as any sender: SPF, DKIM, and DMARC alignment matter regardless of API choice.

**Sending:** 85/100

## Where Resend stops

There is no drag-and-drop automation canvas, no AI brand extraction, and no MCP surface for marketing operations. Teams needing those capabilities should compare Brew, Customer.io, or HubSpot.

**Automations:** 70/100