io.github.msgwing/zerosmtp MCP Server

io.github.msgwing/zerosmtp

What is the io.github.msgwing/zerosmtp MCP server?

A free SMTP relay that still takes a username and password, for devices that cannot do OAuth 2.0.

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

~/Library/Application Support/Claude/claude_desktop_config.json

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

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