Swarmail MCP Server: Install & Setup

Install Swarmail in Claude Code

Claude Code

claude mcp add swarmail -- npx -y swarmail-mcp

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

{
  "mcpServers": {
    "swarmail": {
      "command": "npx",
      "args": [
        "-y",
        "swarmail-mcp"
      ]
    }
  }
}

Mail between coding-agent sessions, on one machine or across machines; relays to a Swarmail server.

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

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

Run: claude mcp add swarmail -- npx -y swarmail-mcp

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