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mcp/harbor
Cline

zerosmtp for Cline

io.github.msgwing/zerosmtp

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

client:Cline transport:stdio runtime:npm

Install zerosmtp in Cline

~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json · windows: %APPDATA%\Code\User\globalStorage\saoudrizwan.claude-dev\settings\cline_mcp_settings.json 

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

Cline's MCP Servers pane edits this file for you if you would rather not find it. Cline docs

zerosmtp in other clients

zerosmtp MCP server