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SendLetter
All integrations

MCP

Available

One MCP server at /mcp, with OAuth and nine tools. Any client that speaks MCP can use it: ChatGPT, Claude, Cursor, VS Code, n8n and future agents.

What you can do with it

  • Price, address validation, draft, preview, confirmation, send, status, list and cancellation are separate tools.
  • The agent can prepare a draft, but only a server token issued after revalidation can authorize real mail.
  • send_letter requires explicit approval, a single-use confirmation token and a stable idempotency key.

Connecting it

  1. Add https://sendletter.eu/mcp as a remote MCP server.
  2. Follow the sign-in your client opens.
  3. Start with a sandbox account: it runs the whole chain without printing or charging.

Add it in one click

Or paste the address into any other client that speaks MCP.

API documentation