SMTP Sandbox kiểm thử email

const nodemailer = require("nodemailer");

const transporter = nodemailer.createTransport({
  host: "smtp.mail.td",
  port: 25,
  auth: {
    user: "sandbox",
    pass: process.env.MAILTD_TOKEN,  // tm_pro_...
  },
});

await transporter.sendMail({
  from: "dev@yourapp.com",
  to: "user@example.com",
  subject: "Verify your email",
  html: "<p>Click <a href='...'>here</a> to verify.</p>",
});
// Email captured in sandbox — never reaches user@example.com