Quolle MCP Server

Let AI agents — Claude Desktop, Cursor, and any Model Context Protocol client — send transactional email through Quolle.

The agent gets tools to send email, send batches, check delivery status, cancel scheduled sends, and list your verified domains — so it can do things like "email the new signup their verification code" or "send everyone on this list their receipt" using your Quolle account.

Tools

Related MCP server: AgentMail MCP Server

Install & build

npm install
npm run build

Configure your MCP client

You need a Quolle API key (starts with qle_) from your dashboard → API Keys.

Claude Desktop

Add to claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/claude_desktop_config.json):

{
  "mcpServers": {
    "quolle": {
      "command": "node",
      "args": ["/absolute/path/to/quolle-mcp/dist/index.js"],
      "env": {
        "QUOLLE_API_KEY": "qle_your_api_key"
      }
    }
  }
}

Cursor

Add to .cursor/mcp.json in your project (or global settings):

{
  "mcpServers": {
    "quolle": {
      "command": "node",
      "args": ["/absolute/path/to/quolle-mcp/dist/index.js"],
      "env": { "QUOLLE_API_KEY": "qle_your_api_key" }
    }
  }
}

Once published to npm, you can skip the local build and use npx:

{
  "mcpServers": {
    "quolle": {
      "command": "npx",
      "args": ["-y", "@quolle/mcp"],
      "env": { "QUOLLE_API_KEY": "qle_your_api_key" }
    }
  }
}

Try it

After restarting your MCP client, ask the agent:

"Using Quolle, send a test email from hello@mail.mydomain.com to me@example.com with the subject 'Hello from my agent' and a short HTML body."

The agent will call list_domains to confirm a valid sender, then send_email.

Environment

• QUOLLE_API_KEY — required. Your Quolle API key.

• QUOLLE_BASE_URL — optional, defaults to https://api.quolle.com.

Safety

Sends go through your real Quolle account and count against your quota. To test agent flows without touching your reputation, point the agent at Quolle's reserved test addresses: delivered@test.quolle.com, bounced@test.quolle.com, complained@test.quolle.com.

License

MIT