send email node js

1var nodemailer = require('nodemailer');
2
3var transporter = nodemailer.createTransport({
4  service: 'gmail',
5  auth: {
6    user: 'youremail@gmail.com',
7    pass: 'yourpassword'
8  }
9});
10
11var mailOptions = {
12  from: 'youremail@gmail.com',
13  to: 'myfriend@yahoo.com',
14  subject: 'Sending Email using Node.js',
15  text: 'That was easy!'
16};
17
18transporter.sendMail(mailOptions, function(error, info){
19  if (error) {
20    console.log(error);
21  } else {
22    console.log('Email sent: ' + info.response);
23  }
24});