import Inbound from 'inboundemail';

const client = new Inbound({
  apiKey: process.env['INBOUND_API_KEY'], // This is the default and can be omitted
});

const response = await client.endpoints.test('id');

console.log(response.message);

{
  "success": true,
  "message": "<string>",
  "responseTime": 123,
  "statusCode": 123,
  "responseBody": "<string>",
  "error": "<string>",
  "testPayload": "<unknown>",
  "urlTested": "<string>"
}