Почему почта не отправляется на адрес электронной почты, как указано?

Я пытаюсь отправить электронное письмо с помощью nodejs. Я использовал этот плагин: https://nodemailer.com/about/, но я не получал почты.

Что я сделал не так?

Вот код и логи с сервера:

var express = require('express'),
        app = express(),
        nodeMailer = require('nodemailer'),
        PORT = process.env.PORT || 3000;


    app.get('/', (req, res) => {
        res.send('hello')
    });


    // Generate test SMTP service account from ethereal.email
    // Only needed if you don't have a real mail account for testing
    nodeMailer.createTestAccount((err, account) => {
        // create reusable transporter object using the default SMTP transport
        let transporter = nodeMailer.createTransport({
            host: 'smtp.ethereal.email',
            port: 587,
            secure: false, // true for 465, false for other ports
            auth: {
                user: account.user, // generated ethereal user
                pass: account.pass // generated ethereal password
            }
        });

        // setup email data with unicode symbols
        let mailOptions = {
            from: '"naveen sharma" <[email protected]>', // sender address
            to: '[email protected]', // list of receivers
            subject: 'Hello ✔', // Subject line
            text: 'Hello world?', // plain text body
            html: '<b>Hello world?</b>' // html body
        };

        // send mail with defined transport object
        transporter.sendMail(mailOptions, (error, info) => {
            if (error) {
                return console.info(error);
            }
            console.info('Message sent: %s', info.messageId);
            // Preview only available when sending through an Ethereal account
            console.info('Preview URL: %s', nodeMailer.getTestMessageUrl(info));

            // Message sent: <[email protected]>
            // Preview URL: https://ethereal.email/message/WaQKMgKddxQDoou...
        });
    });

    app.listen(PORT, () => {
        console.info('listing to ', PORT);
    });

ЖУРНАЛЫ

[nodemon] restarting due to changes...
[nodemon] starting `node index.js`
listing to  3000
Message sent: <[email protected]>
Preview URL: https://ethereal.email/message/W3Je0ho6KAyKJDkaW3Je1jX5zQzZ1TACAAAAARumoZhAa-nxhgOGHx1HBgA