| name | mcp-resend |
| description | Resend MCP wrapper. Activate for developer-first transactional email with React Email components. Routes to MCP tools if available, else generates React Email components for local rendering. |
| allowed-tools | Read, Bash, Write |
MCP Resend Wrapper
Resend email API integration. Developer-first, React Email native.
MCP Server
Server command: npx -y @modelcontextprotocol/server-resend (or community equivalent)
Required env: RESEND_API_KEY, RESEND_FROM_EMAIL
Setup: Resend API keys
Tools exposed (when MCP configured)
| Tool | Purpose |
|---|
mcp__resend__sendEmail | Send transactional email (React Email component → HTML) |
mcp__resend__sendBatch | Batch send (up to 100 recipients) |
mcp__resend__getDomains | List verified sending domains |
mcp__resend__addDomain | Add + verify new sending domain |
mcp__resend__getDeliveryStats | Delivery, open, click events |
Common use patterns
Send with React Email component
Tool: mcp__resend__sendEmail
Args: {
from: "hello@brand.com",
to: "user@example.com",
subject: "Welcome!",
react: <WelcomeEmail firstName="..." />
}
Batch send
Tool: mcp__resend__sendBatch
Args: {
from: "newsletter@brand.com",
subject: "Weekly Update",
recipients: [{to: "u1@x.com", data: {name: "Alice"}}, ...]
}
Error handling
| Error | Cause | Fix |
|---|
403 Forbidden | Domain not verified | Add + verify domain in Resend dashboard |
422 Validation Error | Invalid email/recipient | Validate with regex; check to is array |
429 Too Many Requests | Rate limit (2/sec default, 100/sec with batch) | Batch sends, implement backoff |
Manual Fallback (no MCP server)
If mcp__resend__* tools not available:
- Generate React Email components in
plans/marketing/<campaign>/emails/<name>.tsx:
import { Html, Head, Body, Container, Text, Button } from "@react-email/components";
export default function WelcomeEmail({ firstName }: { firstName: string }) {
return (
<Html>
<Head />
<Body>
<Container>
<Text>Hi {firstName},</Text>
<Button href="https://...">Get Started</Button>
</Container>
</Body>
</Html>
);
}
- Install deps:
npm install @react-email/components react
- Render locally: Use React Email's preview server (
email dev)
- Send via curl:
curl -X POST https://api.resend.com/emails \
-H "Authorization: Bearer $RESEND_API_KEY" \
-d @{"from":"...","to":"...","subject":"...","html":"..."}
Cross-references
skills/automation/mcp-sendgrid/SKILL.md — alternative (full-featured email)skills/marketing/emails/SKILL.md — email marketing methodology
