MCP Send Email

🚀 MCP for Sending Emails 💌

This is a simple MCP server that uses Resend's API to send emails. Why? Now you can have Cursor or Claude Desktop compose an email and send it right away without having to copy and paste the email content.

For example, you can use it to run local scripts, chat with Claude, or process data and send the results to yourself or your team.

Built with the following technologies:

• Resend
• Anthropic MCP
• Cursor

✨ Features

• Send emails in plain text and HTML formats
• Schedule future email deliveries
• Add CC and BCC recipients
• Configure a reply-to address
• Customizable sender email (requires verification)

🎥 Demo

https://github.com/user-attachments/assets/8c05cbf0-1664-4b3b-afb1-663b46af3464

📦 Installation

Currently, you need to build this project locally to use this MCP server. Then add it in Cursor or Claude Desktop to use it in any Cursor or Claude Desktop chat.

1. Clone this project.

git clone https://github.com/resend/mcp-send-email.git

2. Build the project

npm install
npm run build

3. Set up Resend

Create a free Resend account and generate an API Key. You also need to verify your domain to send to other addresses.

⚠️ Important Note

For information on how to use Resend to send emails, refer to the documentation.

💻 Usage Examples

Cursor

1. Open Cursor settings.

Open the command palette (cmd + shift + p on macOS or ctrl + shift + p on Windows) and select "Cursor Settings".

2. Add the MCP server

Select "MCP" from the left sidebar and click "Add new global MCP server".

Add the following configuration:

{
  "mcpServers": {
    "resend": {
      "type": "command",
      "command": "node absolute_path_to_MFC_send_email_project/build/index.js --key=YOUR_RESEND_API_KEY"
    }
  }
}

You can get the absolute path of the build script by right-clicking on the /build/index.js file in Cursor and selecting Copy Path.

Possible parameters

• --key: Your Resend API key (required)
• --sender: Your sender email address from a verified domain (optional)
• --reply-to: Reply-to email address (optional)

⚠️ Important Note

If you don't provide a sender email address, the MCP server will prompt you for one each time you call the tool.

3. Test sending

Now you can test by sending an email. Replace the following content in email.md:

• Replace the "to" email address with your address
• Select all the text in the Cursor chat and press cmd + l
• Tell Cursor to send it as an email (make sure to select "Agent" mode in the dropdown menu at the bottom left).

Claude Desktop

1. Open Claude Desktop settings.

2. Test sending

Close and reopen Claude Desktop. Verify that the resend tool is available in the Claude developer settings.

Tell Claude to use the resend tool to send an email while chatting.