Resend MCP Server

An MCP server for the Resend platform. Send and receive emails, manage contacts, broadcasts, domains, and more — directly from any MCP client like Claude Desktop, Cursor, or Claude Code.

Features

• Emails — Send, list, get, cancel, update, and batch send emails. Supports HTML, plain text, attachments (local file, URL, or base64), CC/BCC, reply-to, scheduling, tags, and topic-based sending.
• Received Emails — List and read inbound emails. List and download received email attachments.
• Contacts — Create, list, get, update, and remove contacts. Manage segment memberships and topic subscriptions. Supports custom contact properties.
• Broadcasts — Create, send, list, get, update, and remove broadcast campaigns. Supports scheduling, personalization placeholders, and preview text.
• Domains — Create, list, get, update, remove, and verify sender domains. Configure tracking, TLS, and sending/receiving capabilities.
• Segments — Create, list, get, and remove audience segments.
• Topics — Create, list, get, update, and remove subscription topics.
• Contact Properties — Create, list, get, update, and remove custom contact attributes.
• API Keys — Create, list, and remove API keys.
• Webhooks — Create, list, get, update, and remove webhooks for event notifications.

Setup

Create a free Resend account and create an API key. To send to addresses outside of your own, you'll need to verify your domain.

Usage

Claude Code

claude mcp add resend -e RESEND_API_KEY=re_xxxxxxxxx -- npx -y resend-mcp

Cursor

Open the command palette and choose "Cursor Settings" > "MCP" > "Add new global MCP server".

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

Claude Desktop

Open Claude Desktop settings > "Developer" tab > "Edit Config".

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

Options

You can pass additional arguments to configure the server:

• --key: Your Resend API key (alternative to RESEND_API_KEY env var)
• --sender: Default sender email address from a verified domain
• --reply-to: Default reply-to email address (can be specified multiple times)

Environment variables:

• RESEND_API_KEY: Your Resend API key (required)
• SENDER_EMAIL_ADDRESS: Default sender email address from a verified domain (optional)
• REPLY_TO_EMAIL_ADDRESSES: Comma-separated reply-to email addresses (optional)

[!NOTE] If you don't provide a sender email address, the MCP server will ask for one each time you send an email.

Local Development

1. Clone and build:

git clone https://github.com/resend/resend-mcp.git
cd resend-mcp
pnpm install
pnpm run build

2. Use the local build in your MCP client:

{
  "mcpServers": {
    "resend": {
      "command": "node",
      "args": ["ABSOLUTE_PATH_TO_PROJECT/dist/index.js"],
      "env": {
        "RESEND_API_KEY": "re_xxxxxxxxx"
      }
    }
  }
}

Testing with MCP Inspector

Note: Make sure you've built the project first (see Local Development section above).

1. Set your API key:

   export RESEND_API_KEY=re_your_key_here
   

2. Start the inspector:

   pnpm inspector
   

3. In the browser (Inspector UI):

   • Choose stdio (launch a process).
   • Command: node
   • Args: dist/index.js (or the full path to dist/index.js)
   • Env: RESEND_API_KEY=re_your_key_here (or leave blank if you already exported it in the same terminal).
   • Click Connect, then use "List tools" to verify the server is working.