Resend MCP Server

Name: Resend MCP Server
Author: friendlygeorge

by friendlygeorgeversion 1.0.0i★ –iRuns on your computer

Registry nameio.github.friendlygeorge/resend-mcp-server

Install

Overview

Description from the maker (original English)

MCP server for Resend — transactional email API for AI assistants...

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Chat & email
You need to fill in: YOUR_API_KEY

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: YOUR_API_KEY

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "resend": {
      "command": "npx",
      "args": [
        "-y",
        "@supernova123/resend-mcp-server"
      ],
      "env": {
        "YOUR_API_KEY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add resend --env YOUR_API_KEY=your-value -- npx -y @supernova123/resend-mcp-server

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "resend": {
      "command": "npx",
      "args": [
        "-y",
        "@supernova123/resend-mcp-server"
      ],
      "env": {
        "YOUR_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "resend": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@supernova123/resend-mcp-server"
      ],
      "env": {
        "YOUR_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

YOUR_API_KEY secret required env
Your API key for the service

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account friendlygeorge, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Chat & emaili

More stars than 0% of the other 1782 servers in this category
Published to the registry more recently than 11% of the other 1782 servers in this category
Basic checks equal to or better than 100% of the other 1782 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Resend MCP Server safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: YOUR_API_KEY

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.0) reached the registry 5 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Vexa, emailmd, MCP WhatsApp Cloud

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Vexa

by Vexa-ai

Meeting bot and transcripts for Google Meet, Teams and Zoom. Live or after, speakers labelled.

Runs in the cloud★ 2,949Apache-2.0Updated 2 months ago

Install

emailmd

by anypost

Render markdown into email-safe HTML, lint drafts for deliverability problems, and preview emails.

Computer or cloud★ 1,385MITUpdated 31 days ago

Install

MCP WhatsApp Cloud

by codespar

MCP server for WhatsApp Cloud API (Meta) — messages, media, and templates via Graph API

Runs on your computer★ 277MITUpdated 5 months ago

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

Resend MCP Server

An MCP server for Resend — connect any MCP-compatible client to the Resend transactional email API.

What is this?

An MCP (Model Context Protocol) server that gives AI assistants and agents full access to Resend's email API — send single or batch emails, manage sending domains, API keys, audiences, and contacts — through natural language.

Use it with Claude Desktop, Cursor, Windsurf, Cline, Continue, or any MCP-compatible client to send emails, manage infrastructure, and build automation around email.

Why use this?

18 built-in tools — covers sending (single + batch), domains, API keys, audiences, and contacts
Send emails by talking — "send a welcome email to jane@example.com" just works
Manage your infrastructure — create/verify/delete domains, mint/revoke API keys, manage contacts
Batch sending — send up to 100 emails in a single API call
Full contact CRUD — create, read, update, and delete contacts across audiences
Rate-limited automatically — respects Resend's 10 req/s free tier, retries on 429
Works with every MCP client — Claude Desktop, Cursor, Windsurf, Cline, Continue, and more

Quick Start

Add to your MCP client config (e.g. claude_desktop_config.json):

"mcpServers": { "resend": { "command": "npx", "args": ["-y", "resend-mcp-server"], "env": { "RESEND_API_KEY": "re_xxxxxxxxxxxx" } } } }

Get a free API key at resend.com/api-keys.

Use it

Ask your AI assistant things like:

"Send an email to jane@example.com thanking her for signing up"
"List the last 5 emails I sent"
"What happened to email ID abc-123?"
"Create a new sending domain for mail.acme.com"
"Verify domain domain-xyz"
"Mint a new API key called 'production-server'"
"Add jane@example.com to audience audience-1"

Tools

Tool	Description
`send_email`	Send a transactional email (HTML or plain text, with Cc/Bcc/Reply-To)
`send_batch_email`	Send up to 100 emails in a single API call
`list_emails`	List recent sent emails with their delivery status
`get_email`	Get details for a specific email by ID
`create_domain`	Add a new sending domain
`list_domains`	List all sending domains in your account
`verify_domain`	Trigger DNS verification for a domain
`delete_domain`	Remove a sending domain
`create_api_key`	Create a new API key (full, sending, or domain-scoped)
`list_api_keys`	List all API keys (tokens are hidden)
`delete_api_key`	Delete an API key by ID
`list_audiences`	List all audiences in your account
`create_audience`	Create a new audience for organizing contacts
`list_contacts`	List contacts in an audience
`get_contact`	Get details for a specific contact by ID
`create_contact`	Add a new contact to an audience
`update_contact`	Update a contact's email, name, or subscription status
`delete_contact`	Remove a contact from an audience

Use Cases

Transactional Email Automation

"Send a welcome email to every new signup" — automate onboarding flows, receipts, and notifications through natural language. No more switching between email dashboards.

Domain Management

"Add mail.acme.com as a sending domain and verify it" — manage DNS records, DKIM, and SPF through your AI assistant instead of logging into Resend's dashboard.

Contact & Audience Management

"Add jane@example.com to my VIP audience" — build and segment contact lists without touching a spreadsheet. Full CRUD on contacts and audiences.

Batch Campaigns

"Send this newsletter to all contacts in audience-1" — batch-send up to 100 emails in one call. Perfect for newsletters, product announcements, or re-engagement campaigns.

Infrastructure Audit

"List all my API keys and domains" — audit your Resend setup in seconds. See which keys are active, which domains are verified, and clean up stale resources.

Security

API key required — Resend API key is passed via environment variable, never logged or stored in files.
No local file access — does not read or write any files on your machine.
No shell access — does not execute commands or spawn processes.
Rate-limited — automatically caps requests at ~9 req/s to stay within Resend's free tier.
Open source — MIT licensed. Inspect the code at GitHub.

Troubleshooting

Rate limit errors (429)

The server auto-retries on 429 with a 2s backoff. Free tier allows 10 req/s. The server caps at ~9 req/s to stay safe. If you hit this frequently, consider upgrading your Resend plan.

"Invalid API key" errors

Verify your RESEND_API_KEY starts with re_ and is active at resend.com/api-keys. Keys take up to 30 seconds to propagate after creation.

Server won't start

Make sure Node.js 18+ is installed: node --version. If using npx, ensure npm is up to date: npm install -g npm@latest.

MCP client can't connect

Verify the config path is correct. Claude Desktop uses ~/Library/Application Support/Claude/claude_desktop_config.json on macOS and %APPDATA%\Claude\claude_desktop_config.json on Windows. Restart the client after config changes.

Emails not delivering

Check list_emails for delivery status. Common issues: missing DNS records (run verify_domain), bounce due to invalid address, or domain not yet verified. Resend's dashboard shows detailed webhook events.

Requirements

Node.js 18+
A Resend account and API key (RESEND_API_KEY)

Rate Limits

The server automatically rate-limits requests to ~9 calls/second to stay safely under Resend's free-tier limit of 10 req/s. If you hit a 429 anyway, it waits 2s and retries once.

Development

git clone https://github.com/friendlygeorge/resend-mcp-server.git

cd resend-mcp-server npm install npm run build RESEND_API_KEY=re_xxxx npm start

License

MIT

Resend MCP Server

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Chat & emaili

Common questions

Alternatives

Vexa

emailmd

MCP WhatsApp Cloud

README from the maker

Resend MCP Server

What is this?

Why use this?

Quick Start

Use it

Tools

Use Cases

Transactional Email Automation

Domain Management

Contact & Audience Management

Batch Campaigns

Infrastructure Audit

Security

Troubleshooting

Rate limit errors (429)

"Invalid API key" errors

Server won't start

MCP client can't connect

Emails not delivering

Requirements

Rate Limits

Development

License