Stalwart Mail Mcp

io.github.cybersmurf/stalwart-mail-mcp · v2.3.0

Mail and contacts on a self-hosted Stalwart server via JMAP: search, read, OCR, send, drafts.

Source code Set it up

Connect Runs on your machine

Terminal

claude mcp add stalwart-mail-mcp -e STALWART_URL=<STALWART_URL> -e STALWART_USER=<STALWART_USER> -e STALWART_PASSWORD=<STALWART_PASSWORD> -e MAIL_LANG=<MAIL_LANG> -e MAIL_OCR_PROVIDER=<MAIL_OCR_PROVIDER> -e MAIL_OCR_API_KEY=<MAIL_OCR_API_KEY> -e MAIL_OCR_MODEL=<MAIL_OCR_MODEL> -e MAIL_OCR_BASE_URL=<MAIL_OCR_BASE_URL> -- npx -y [email protected]

claude_desktop_config.json

{
  "mcpServers": {
    "stalwart-mail-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "STALWART_URL": "<STALWART_URL>",
        "STALWART_USER": "<STALWART_USER>",
        "STALWART_PASSWORD": "<STALWART_PASSWORD>",
        "MAIL_LANG": "<MAIL_LANG>",
        "MAIL_OCR_PROVIDER": "<MAIL_OCR_PROVIDER>",
        "MAIL_OCR_API_KEY": "<MAIL_OCR_API_KEY>",
        "MAIL_OCR_MODEL": "<MAIL_OCR_MODEL>",
        "MAIL_OCR_BASE_URL": "<MAIL_OCR_BASE_URL>"
      }
    }
  }
}

~/.cursor/mcp.json

{
  "mcpServers": {
    "stalwart-mail-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "STALWART_URL": "<STALWART_URL>",
        "STALWART_USER": "<STALWART_USER>",
        "STALWART_PASSWORD": "<STALWART_PASSWORD>",
        "MAIL_LANG": "<MAIL_LANG>",
        "MAIL_OCR_PROVIDER": "<MAIL_OCR_PROVIDER>",
        "MAIL_OCR_API_KEY": "<MAIL_OCR_API_KEY>",
        "MAIL_OCR_MODEL": "<MAIL_OCR_MODEL>",
        "MAIL_OCR_BASE_URL": "<MAIL_OCR_BASE_URL>"
      }
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "stalwart-mail-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "STALWART_URL": "<STALWART_URL>",
        "STALWART_USER": "<STALWART_USER>",
        "STALWART_PASSWORD": "<STALWART_PASSWORD>",
        "MAIL_LANG": "<MAIL_LANG>",
        "MAIL_OCR_PROVIDER": "<MAIL_OCR_PROVIDER>",
        "MAIL_OCR_API_KEY": "<MAIL_OCR_API_KEY>",
        "MAIL_OCR_MODEL": "<MAIL_OCR_MODEL>",
        "MAIL_OCR_BASE_URL": "<MAIL_OCR_BASE_URL>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

Name	Description
`STALWART_URL` Required	Public address of the Stalwart server, e.g. https://mail.example.com
`STALWART_USER` Required	Mailbox e-mail address to sign in with
`STALWART_PASSWORD` Required, secret	Mailbox or app password
`MAIL_LANG` Optional	Language: auto, en, cs, de, es, fr, it, nl, pl, pt, sk
`MAIL_OCR_PROVIDER` Optional	OCR of scans: auto, off, mistral, anthropic, openai, openrouter, gemini, ollama, lmstudio, custom
`MAIL_OCR_API_KEY` Optional, secret	API key of the OCR provider (not needed for local servers)
`MAIL_OCR_MODEL` Optional	OCR model name
`MAIL_OCR_BASE_URL` Optional	Address of a custom OpenAI-compatible OCR server

Details

Package	`[email protected]` (NPM, stdio)
First published	2 Oct 2026
Last updated	2 Oct 2026
Registry name	`io.github.cybersmurf/stalwart-mail-mcp`

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Live status

Local install

Installed and run on your own machine, so there is no public endpoint to check.

Pair it with live search

Agents that use Stalwart Mail Mcp often also need current facts. NestDaddy MCP gives your AI today's internet: web search, real-time breaking news and full page reading in one connector.

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