npm i --save nodemailer

var nodemailer = require('nodemailer');

var transporter = nodemailer.createTransport({
  service: 'gmail',
  auth: {
    user: '[email protected]',
    pass: 'yourpassword'
  }
});

var mailOptions = {
  from: '[email protected]',
  to: '[email protected]', // others adresses here 
  subject: 'Sending Email using Node.js',
  text: 'That was easy!'
// html : '<h1>Welcome onboard !</h1> <br> <h3>Thanks for creating your account</h3>'
};

transporter.sendMail(mailOptions, function(error, info){
  if (error) {
    console.log(error);
  } else {
    console.log('Email sent: ' + info.response);
  }
});