nodemailer

https://nodemailer.com/

npm install nodemailer

const nodemailer = require('nodemailer');

const mailOptions = {from, to, subject, text};

const transporter = nodemailer.createTransport({
    service: 'gmail',
    auth: {user, pass},
});

transporter.sendMail(mailOptions, function(error, info){
    if (error) {
        console.log(error);
    } else {
        console.log(info.response);
    }
});