Node.js Integration Code:

const response = await fetch("https://smtp.techwithjoshi.in/api/v1/send-otp", {
  method: "POST",
  headers: {
    "Content-Type": "application/json",
    "Authorization": "Bearer twj_live_opif_8f3d79b2e1"
  },
  body: JSON.stringify({
    to: "client_user@gmail.com",
    otp: "591024",
    name: "User Name"
  })
});

const data = await response.json();
console.log(data); // { success: true, messageId: "..." }