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mcp/harbor
VS Code

MailFlat for VS Code

io.github.mailflat/mailflat-mcp

Real email inboxes for AI agents: open an address, read the one-time code, send mail.

client:VS Code transport:stdio runtime:pypi

Install MailFlat in VS Code

.vscode/mcp.json 

{
  "inputs": [
    {
      "type": "promptString",
      "id": "mailflat-api-key",
      "description": "MAILFLAT_API_KEY",
      "password": true
    },
    {
      "type": "promptString",
      "id": "mailflat-api-url",
      "description": "MAILFLAT_API_URL",
      "password": true
    }
  ],
  "servers": {
    "mailflat-mcp": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "mailflat-mcp"
      ],
      "env": {
        "MAILFLAT_API_KEY": "${input:mailflat-api-key}",
        "MAILFLAT_API_URL": "${input:mailflat-api-url}"
      }
    }
  }
}

VS Code prompts for each input the first time the server starts, so no secret is written to the file. VS Code docs

MailFlat in other clients

MailFlat MCP server