Gmail MCP Server

A Model Context Protocol (MCP) server that provides tools for interacting with Gmail API. This server enables you to manage your emails programmatically through the MCP interface.

Features

Gmail Tools

• list_emails: List recent emails from your inbox with optional filtering
• search_emails: Advanced email search with Gmail query syntax
• send_email: Send new emails with support for CC and BCC
• modify_email: Modify email labels (archive, trash, mark read/unread)

Prerequisites

1. Node.js: Install Node.js version 14 or higher
2. Google Cloud Console Setup:
   • Go to Google Cloud Console
   • Create a new project or select an existing one
   • Enable the Gmail API:
     1. Go to "APIs & Services" > "Library"
     2. Search for and enable "Gmail API"
   • Set up OAuth 2.0 credentials:
     1. Go to "APIs & Services" > "Credentials"
     2. Click "Create Credentials" > "OAuth client ID"
     3. Choose "Web application"
     4. Set "Authorized redirect URIs" to include: http://localhost:3001/code
     5. Note down the Client ID and Client Secret

Setup Instructions

1. Clone and Install:

   git clone https://github.com/yourusername/google-gmail-mcp-server.git
   cd google-gmail-mcp-server
   npm install
   

2. Create OAuth Credentials: Create a credentials.json file in the root directory:

   {
       "web": {
           "client_id": "YOUR_CLIENT_ID",
           "client_secret": "YOUR_CLIENT_SECRET",
           "redirect_uris": ["http://localhost:3001/code"],
           "auth_uri": "https://accounts.google.com/o/oauth2/auth",
           "token_uri": "https://oauth2.googleapis.com/token"
       }
   }
   

3. Get Refresh Token:

   node get-refresh-token.js
   

   This will:

   • Open your browser for Google OAuth authentication
   • Request the following permissions:
     • https://www.googleapis.com/auth/gmail.modify
     • https://www.googleapis.com/auth/gmail.send
   • Save the credentials to token.json
   • Display the refresh token in the console

4. Configure MCP Settings: Add the server configuration to your MCP settings file:

   • For VSCode Claude extension: ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
   • For Claude desktop app: ~/Library/Application Support/Claude/claude_desktop_config.json

   Add this to the mcpServers object:

   {
     "mcpServers": {
       "google-gmail": {
         "command": "node",
         "args": ["/path/to/google-gmail-server/build/index.js"],
         "env": {
           "GOOGLE_ACCESS_TOKEN": "your_access_token",
         }
       }
     }
   }
   

5. Build and Run:

   npm run build
   

Usage Examples

Gmail Operations

1. List Recent Emails:

   {
     "maxResults": 5,
     "query": "is:unread"
   }
   

2. Search Emails:

   {
     "query": "from:example@gmail.com has:attachment",
     "maxResults": 10
   }
   

3. Send Email:

   {
     "to": "recipient@example.com",
     "subject": "Hello",
     "body": "Message content",
     "cc": "cc@example.com",
     "bcc": "bcc@example.com"
   }
   

4. Modify Email:

   {
     "id": "message_id",
     "addLabels": ["UNREAD"],
     "removeLabels": ["INBOX"]
   }
   

License

MIT