Gmail MCP Server

Gmail MCP Server

Enables sending emails through Gmail using your Gmail credentials. Provides a simple send_email tool that accepts recipient, subject, and plain text body parameters.

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README

MCP Gmail Server

A minimal Model Context Protocol (MCP) server that sends emails through Gmail.

Quick Start

  1. Install dependencies:

    npm install

  2. Set up Gmail credentials:

    cp .env.example .env
# Edit .env with your Gmail credentials

  3. Build and run:

    npm run build
npm start

Configuration

Set these environment variables in .env:

  • GMAIL_USER: Your Gmail address
  • GMAIL_PASS: Gmail App Password (not your regular password)

Usage

The server exposes one tool: send_email

Parameters:

  • to: Recipient email address
  • subject: Email subject line
  • body: Email content (plain text)

Files

  • src/index.ts - Main MCP server implementation
  • .well-known/mcp.json - MCP server manifest
  • .vscode/mcp.json - VS Code MCP configuration

Testing

# Test with MCP Inspector
npx @modelcontextprotocol/inspector node build/index.js

## How It Works

1. Creates MCP server with Gmail transporter
2. Registers `send_email` tool with input validation
3. Connects via STDIO transport for MCP communication
4. Returns structured responses with success/error states

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