Как отправить письмо через nodemailer?

const express = require('express');
const bodyParser = require('body-parser');
const path = require('path');
const nodemailer = require('nodemailer');
const app = express();



// Body Parser Middleware
app.use(bodyParser.urlencoded({ extended: false }));
app.use(bodyParser.json());

var staticSiteOptions = {
  portnum: 3000, 
  maxAge: 1000 * 60 * 15 
};

app.post('/send', (req, res) => {
  const output = `
    <p>You have a new contact request</p>
    <h3>Contact Details</h3>
    <ul>  
      <li>Name: ${req.body.name}</li>
      <li>Email: ${req.body.email}</li>
    </ul>
    <h3>Message</h3>
    <p>${req.body.desc}</p>
  `;

  // create reusable transporter object using the default SMTP transport
  let transporter = nodemailer.createTransport({
    service: "Gmail",
    auth: {
        user: "Тут мой емейл",
        pass: "Тут пароль ;)"
    }
})

  // setup email data with unicode symbols
  let mailOptions = {
    from: "Andrey Okhotnikov <111@gmail.com>", // sender address
    to: "ТУТ МОЙ ЕМЕЙЛ", // list of receivers
    subject: "", // Subject line
    html: output
}

  // send mail with defined transport object
  transporter.sendMail(mailOptions, (error, info) => {
      if (error) {
          return console.log(error);
      }
      console.log('Message sent: %s', info.messageId);   
      console.log('Preview URL: %s', nodemailer.getTestMessageUrl(info));

      res.sendStatus(200)
  });
});
app.use(express.static(
  path.join(__dirname, 'public'),
  staticSiteOptions
)).listen(staticSiteOptions.portnum);