Resend MCP Server

Official Resend MCP server enabling AI agents to send transactional emails via Resend's developer-first email API — composing and sending emails with HTML/text content, managing contacts, and handling email delivery.

Evaluated Mar 06, 2026 (0d ago) vcurrent

Homepage ↗ Repo ↗ Communication resend email mcp-server official transactional-email react-email notifications

⚙ Agent Friendliness

/ 100

Can an agent use this?

🔒 Security

/ 100

Is it safe for agents?

⚡ Reliability

/ 100

Does it work consistently?

Score Breakdown

⚙ Agent Friendliness

MCP Quality

Documentation

Error Messages

Auth Simplicity

Rate Limits

🔒 Security

TLS Enforcement

100

Auth Strength

Scope Granularity

Dep. Hygiene

Secret Handling

HTTPS enforced. Domain verification prevents unauthorized domain sending. API key scope granularity gap. SOC 2 Type II. Developer-friendly but needs scope controls.

⚡ Reliability

Uptime/SLA

Version Stability

Breaking Changes

Error Recovery

Best When

An agent needs to send transactional email notifications, reports, or alerts — Resend's developer-first API makes integration straightforward.

Avoid When

You need inbound email processing or bulk marketing — use appropriate tools for those.

Use Cases

• Sending transactional emails from agent workflows (notifications, reports)
• Composing and sending email summaries from data analysis agents
• Automated email notifications triggered by agent-detected events
• Testing email templates from development agents
• Sending agent-generated reports to stakeholders via email

Not For

• Mass marketing email campaigns (use dedicated ESP tools)
• Inbound email processing (Resend is send-only in basic usage)
• Teams using SendGrid, Mailgun, or other email providers

Interface

REST API

Yes

GraphQL

gRPC

MCP Server

Yes ↗

SDK

Yes

Webhooks

Yes

OpenAPI Spec ↗

Authentication

Methods: api_key

OAuth: No Scopes: No

Single API key via RESEND_API_KEY. No scope granularity — key grants full account access including sending from all verified domains.

Pricing

Model: usage-based

Free tier: Yes

Requires CC: No

Very developer-friendly pricing. Free tier sufficient for agent notification use cases. Per-email pricing on higher tiers.

Agent Metadata

Pagination

cursor

Idempotent

Full

Retry Guidance

Documented

Known Gotchas

⚠ Domain verification required before sending — agents cannot send from unverified domains
⚠ From address must be on a verified domain — can't spoof arbitrary from addresses
⚠ Rate limit (2 req/s on free) easily hit by agents sending batches — implement delay
⚠ Email delivery is async — success response means accepted, not delivered
⚠ HTML email rendering varies by email client — test templates before agent deployment
⚠ API key grants send-from-all-domains access — no per-domain scope granularity

Alternatives

sendgrid-api mailgun-api postmark-api

Full Evaluation Report

Detailed scoring breakdown, competitive positioning, security analysis, and improvement recommendations for Resend MCP Server.

$99

API endpoint ↗ Agent guide ↗ Report inaccuracy

Scores are editorial opinions as of 2026-03-06.