3LT Letter Mail MCP Server: Install & Setup

Install 3LT Letter Mail in Claude Code

Claude Code

claude mcp add --transport http 3lt-letter-mail https://3lgrouptechnology.com/mcp

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

{
  "mcpServers": {
    "3lt-letter-mail": {
      "url": "https://3lgrouptechnology.com/mcp"
    }
  }
}

Frequently asked questions

What does the 3LT Letter Mail MCP server do?

Give AI assistants hands: send real USPS letters via MCP.

Is the 3LT Letter Mail 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 3LT Letter Mail run locally or remotely?

Remote. Hosted by the provider. You connect with a URL, nothing to install.

How do I add 3LT Letter Mail to Claude Code?

Run: claude mcp add --transport http 3lt-letter-mail https://3lgrouptechnology.com/mcp

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