(Node) Send Mail

// Following code send mail using SMTP information

Prerequisite NPM commands:
npm init -y
npm install nodemailer --save

Code starts from here

const nodemailer = require('nodemailer');

exports.sendMail = function(req, res, next) {
 nodemailer.createTestAccount((err, account) => {
      // create reusable transporter object using the default SMTP transport
      let transporter = nodemailer.createTransport({
          host: <<SMTP_IP>>,
          port: <<SMPT_PORT>>,
          secure: false,
          tls: {
          // do not fail on invalid certs
          rejectUnauthorized: false
      }

      });

      // setup email data with unicode symbols
      let mailOptions = {
          from: '"Harish Dewangan" <DoNotReply@company.com>', // sender address
          to: 'harish.dewangan@company.com', // list of receivers
          subject: 'Test mail , // Subject line
          html:    '<h2>This is a test mail <h2>'
      };

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

  });

 }