Just send the damn email.

// Using Fetch API
const response = await fetch('https://notify.cx/api/public/v1/send-email', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'x-api-key': 'your-api-key'
  },
  body: JSON.stringify({
    to: 'user@example.com',
    subject: 'Welcome aboard!',
    name: 'John',
    message: 'Thanks for joining us!'
  })
});

const data = await response.json();