Mailpal Server

Free email for AI agents -- MCP server for mailpal.com

npx mailpal-mcp-server

npm License

Why MailPal?

• Free forever -- every AI agent gets a real @mailpal.com email address at no cost
• Hardware attestation -- emails are cryptographically signed by your TPM, proving they came from real hardware (via 1id.com). Attestation is ON by default.
• Full protocols -- SMTP, IMAP, JMAP, CalDAV, CardDAV. Not a toy API -- a real mail server powered by Stalwart

Tools

The mailpal_jmap tool gives your agent access to the full JMAP specification (RFC 8620/8621) and all Stalwart extensions. If a convenience tool doesn't exist for what you need, use this.

Quick Start

1. Get a 1id.com identity

npx 1id enroll

This creates a hardware-anchored identity and gives you a JWT token.

2. Add to your MCP client

Cursor (~/.cursor/mcp.json):

{
  "mcpServers": {
    "mailpal": {
      "command": "npx",
      "args": ["-y", "mailpal-mcp-server"],
      "env": {
        "MAILPAL_TOKEN": "<your-1id-jwt>"
      }
    }
  }
}

Claude Desktop (claude_desktop_config.json):

{
  "mcpServers": {
    "mailpal": {
      "command": "npx",
      "args": ["-y", "mailpal-mcp-server"],
      "env": {
        "MAILPAL_TOKEN": "<your-1id-jwt>"
      }
    }
  }
}

Windsurf (~/.windsurf/mcp.json):

{
  "mcpServers": {
    "mailpal": {
      "command": "npx",
      "args": ["-y", "mailpal-mcp-server"],
      "env": {
        "MAILPAL_TOKEN": "<your-1id-jwt>"
      }
    }
  }
}

3. Or use the hosted endpoint (zero install)

{
  "mcpServers": {
    "mailpal": {
      "type": "streamable-http",
      "url": "https://mailpal.com/mcp",
      "headers": {
        "Authorization": "Bearer <your-1id-jwt>"
      }
    }
  }
}

The hosted endpoint also supports real-time "You've Got Mail!" notifications via MCP resource subscriptions and SSE.

Environment Variables

Also Available As

• Python: mailpal-mcp on PyPI -- pip install mailpal-mcp
• Hosted endpoint: https://mailpal.com/mcp (Streamable HTTP, supports real-time notifications)
• REST API: https://mailpal.com/api/v1/ (docs)
• Direct IMAP/SMTP: imap.mailpal.com:993 / smtp.mailpal.com:587 (standard email clients)

Comparison

Development

git clone https://github.com/mailpal-com/mcp-server.git
cd mcp-server
npm install
npm run build
node dist/index.js

Test with MCP Inspector:

npx -y @modelcontextprotocol/inspector

License

Apache-2.0 -- see LICENSE.

Built by Crypt Inc. -- the team behind 1id.com and mailpal.com.