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Lettio MCP

السجل الرسمي البحث والويب

Private, EU-hosted email for AI agents over JMAP: read, search, reply, organize, send.

الشيفرة المصدرية التوثيق

التثبيت

أضف هذا إلى إعدادات MCP في عميلك (Claude Desktop: claude_desktop_config.json، وCursor: ‏.cursor/mcp.json، ويستخدم VS Code وغيره الصيغة نفسها «mcpServers»).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http lettio-mcp 'https://mcp.lettio.eu/mcp'
إعداد JSON (Claude Desktop وCursor وVS Code) 
{
    "mcpServers": {
        "lettio-mcp": {
            "type": "http",
            "url": "https://mcp.lettio.eu/mcp"
        }
    }
}
NPM package @lettio/mcp
Claude Code 
claude mcp add lettio-mcp -e 'LETTIO_USERNAME=<LETTIO_USERNAME>' -e 'LETTIO_PASSWORD=<your lettio_password>' -e 'LETTIO_HOST=<LETTIO_HOST>' -- npx -y @lettio/mcp@0.1.2
إعداد JSON (Claude Desktop وCursor وVS Code) 
{
    "mcpServers": {
        "lettio-mcp": {
            "command": "npx",
            "args": [
                "-y",
                "@lettio/mcp@0.1.2"
            ],
            "env": {
                "LETTIO_USERNAME": "<LETTIO_USERNAME>",
                "LETTIO_PASSWORD": "<your lettio_password>",
                "LETTIO_HOST": "<LETTIO_HOST>"
            }
        }
    }
}

متغيرات البيئة

  • LETTIO_USERNAME إلزامي Full email address of the Lettio mailbox, e.g. you@yourcompany.eu.
  • LETTIO_PASSWORD إلزامي سري App password for the mailbox.
  • LETTIO_HOST Mail host. Defaults to https://mail.lettio.eu.

التوثيق

مأخوذ من ملف README للمشروع على GitHub ويُحدَّث أسبوعيًا. تفتح الروابط على GitHub.

المحتويات
  1. Lettio MCP
  2. Tools
  3. Requirements
  4. Use with Claude Desktop
  5. Configuration
  6. Security
  7. Run from source
  8. License

Lettio MCP

Let your AI assistant read, search and send email from a private, EU-hosted mailbox.

Lettio MCP is a Model Context Protocol server that connects an AI agent (Claude, Cursor, and any other MCP client) to a Lettio mailbox over JMAP. Your assistant can triage your inbox, find a message, and send a reply — without your email ever leaving Europe.

  • 🇪🇺 European by default — talks to your own EU-hosted mailbox, no third‑party middleman.
  • 🔒 Safe sending — the server can only ever send as the mailbox it is signed in to. It cannot be tricked into sending from another address.
  • 📬 Everything an agent needs — list, search, read and send, over the open JMAP standard.
  • 👥 One or many mailboxes — configure a single account or several.

Prefer nothing to install? Lettio also runs as a hosted, OAuth‑secured MCP server at https://mcp.lettio.eu/mcp — add that URL in your client and sign in. This npm package is the local / self‑hosted option for people who want to run it on their own machine.

Tools

ToolWhat it does
list_accountsList the mailboxes this server is configured for.
list_mailboxesList folders in an account, with message and unread counts.
list_recent_emailsMost recent messages in a mailbox (defaults to the inbox).
search_emailsFree‑text search across sender, subject and body.
read_emailFull content of one message by id.
send_emailSend a plain‑text email as the signed‑in mailbox.
reply_emailReply in‑thread (keeps the conversation), optionally reply‑all.
set_read_statusMark a message read or unread.
flag_emailFlag (star) or unflag a message.
move_emailMove to a folder — archive, trash (reversible), or a folder name.

Requirements

  • Node.js 18 or newer.
  • A Lettio mailbox and an app password for it (use a dedicated app password, not your main login).

Use with Claude Desktop

Add this to your claude_desktop_config.json:

{
  "mcpServers": {
    "lettio": {
      "command": "npx",
      "args": ["-y", "@lettio/mcp"],
      "env": {
        "LETTIO_USERNAME": "you@yourcompany.eu",
        "LETTIO_PASSWORD": "your-app-password"
      }
    }
  }
}

Restart Claude Desktop; the Lettio tools appear in the tools menu.

Configuration

Configured entirely through environment variables.

Single mailbox
VariableRequiredDescription
LETTIO_USERNAMEyesFull email address, e.g. you@yourcompany.eu.
LETTIO_PASSWORDyesMailbox app password.
LETTIO_HOSTnoMail host. Defaults to https://mail.lettio.eu.
LETTIO_ACCOUNT_NAMEnoFriendly name for the account (default: the username).
Several mailboxes

Set LETTIO_ACCOUNTS to a JSON array and omit the single‑account variables:

[
  { "name": "work", "username": "you@yourcompany.eu", "password": "app-password" },
  { "name": "sales", "username": "sales@yourcompany.eu", "password": "app-password" }
]

Then pass account: "work" to any tool to choose which mailbox to use.

Security

Sending is deliberately constrained. Before it sends, the server asks the mail host for the identities the signed‑in mailbox is allowed to use and requires one that matches the login address. The From header and the SMTP envelope MAIL FROM are both pinned to that address. There is no parameter for choosing a different sender, so an agent can never send "from" a foreign or arbitrary mailbox. Credentials are read from the environment, kept only in memory, and never logged.

Run from source

npm install
npm run build
LETTIO_USERNAME=you@yourcompany.eu LETTIO_PASSWORD=app-password npm start

License

MIT © Valmia Solutions s.r.o.

الأسئلة الشائعة

ما هو Lettio MCP؟

Private, EU-hosted email for AI agents over JMAP: read, search, reply, organize, send.

كيف أثبّت Lettio MCP؟

يعمل كخادم بعيد. في Claude Code: claude mcp add --transport http lettio-mcp 'https://mcp.lettio.eu/mcp'. وفي العملاء الآخرين، الصق إعداد JSON من هذه الصفحة في إعدادات MCP الخاصة بهم.

هل يحتاج Lettio MCP إلى مفتاح API؟

نعم. يتطلب LETTIO_USERNAME, LETTIO_PASSWORD، وتضبطها في إعداداته.

هل Lettio MCP مفتوح المصدر؟

نعم. شيفرته متاحة على GitHub بترخيص MIT.

من يصون Lettio MCP؟

ينشره lettio-eu. يدرجه AI.tn لكنه لا يصونه ولا يوصي به.

من سجل MCP الرسمي. الإدراج ليس توصية: راجع شيفرة الخادم وصلاحياته قبل منحه الوصول إلى بياناتك.