Mailsink

Overview

Mailsink is a Model Context Protocol server that provides disposable inboxes for AI agents and CI systems. It lets you catch verification emails, read OTPs, and extract links—capabilities your AI assistant can invoke directly as tools.

The server runs locally via the npm package @mailsink/mcp, communicating over stdio. You'll need to set the MAILSINK_API_KEY environment variable to authenticate. Version v0.1.5 is available now under the MIT license, with source code at heocoi/mailsink-mcp on GitHub.

Mailsink is listed in the AI & Agents category and works with MCP clients including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed, and others. If you maintain this project, claim your listing to verify ownership and keep it current.

Installation

// claude_desktop_config.json
{
  "mcpServers": {
    "mailsink": {
      "command": "npx",
      "args": [
        "-y",
        "@mailsink/mcp"
      ],
      "env": {
        "MAILSINK_API_KEY": "<mailsink-api-key>"
      }
    }
  }
}

Requires MAILSINK_API_KEY