guerrillamail-mcp

MCP server for the Guerrilla Mail temporary/disposable email API. Spin up throwaway inboxes, poll for mail, and read messages from any MCP client — Claude Desktop, Claude Code, Cursor, or any other.

Zero config. No API key. One command.

npx -y guerrillamail-mcp

Why

Need a throwaway email inside an AI workflow — signup testing, OTP capture, scratch inbox — without leaving the agent? This wires Guerrilla Mail's disposable inboxes straight into the Model Context Protocol so your agent can create an address, watch for mail, and read it, all on its own.

Install & usage

Run directly with npx — no install needed:

npx -y guerrillamail-mcp

Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "guerrillamail": {
      "command": "npx",
      "args": ["-y", "guerrillamail-mcp"]
    }
  }
}

Claude Code CLI

claude mcp add guerrillamail -- npx -y guerrillamail-mcp

Tools

| Tool | Description | Inputs | |------|-------------|--------| | get_email_address | Get a new disposable address and start a session. | lang (optional, default "en") | | set_email_user | Set the local part of the address for the session. | email_user (required) | | check_inbox | Check the inbox; poll only newer mail with seq. | seq (optional, default "0") | | fetch_email | Fetch the full body of one email (HTML stripped). | email_id (required) | | delete_emails | Delete one or more emails. | email_ids (required, string[]) | | forget_me | Forget the session and clear local state. | none |

Notes

• Session state (sid_token + PHPSESSID cookie) is held in memory for the life of the process.
• No API key required. Uses the public Guerrilla Mail AJAX endpoint.

License

MIT