Proton Mail (unofficial) MCP Server: Install & Setup

Install Proton Mail (unofficial) in Claude Code

Claude Code

claude mcp add proton-mail-unofficial -e PROTONMAIL_USERNAME=... -e PROTONMAIL_PASSWORD=... -- npx -y proton-mail-mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "proton-mail-unofficial": {
      "command": "npx",
      "args": [
        "-y",
        "proton-mail-mcp"
      ],
      "env": {
        "PROTONMAIL_USERNAME": "...",
        "PROTONMAIL_PASSWORD": "..."
      }
    }
  }
}

Replace each ... with your own value.

Frequently asked questions

What does the Proton Mail (unofficial) MCP server do?

Unofficial Proton Mail integration via Proton Mail Bridge: send, read, search and organize email, with dry-run bulk operations and a read-only mode.

Is the Proton Mail (unofficial) MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does Proton Mail (unofficial) run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Proton Mail (unofficial) to Claude Code?

Run: claude mcp add proton-mail-unofficial -e PROTONMAIL_USERNAME=... -e PROTONMAIL_PASSWORD=... -- npx -y proton-mail-mcp

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