How to implement smtp and imap in node.js?

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npm install nodemailer imap

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const nodemailer = require('nodemailer');

// create a nodemailer transporter
let transporter = nodemailer.createTransport({
    service: 'Gmail',
    auth: {
        user: 'your_email@gmail.com',
        pass: 'your_password'
    }
});

// setup email data
let mailOptions = {
    from: 'your_email@gmail.com',
    to: 'recipient_email@example.com',
    subject: 'Hello from Node.js',
    text: 'This is a test email sent from Node.js'
};

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

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const Imap = require('imap');

// create an IMAP connection
let imap = new Imap({
    user: 'your_email@gmail.com',
    password: 'your_password',
    host: 'imap.gmail.com',
    port: 993,
    tls: true
});

imap.connect();

imap.once('ready', () => {
    imap.openBox('INBOX', false, (error, mailbox) => {
        if (error) {
            console.log(error);
            return;
        }

        // search for all emails
        imap.search(['ALL'], (error, results) => {
            if (error) {
                console.log(error);
                return;
            }

            let f = imap.fetch(results, { bodies: '' });
            f.on('message', (msg, seqno) => {
                console.log('Message #%d', seqno);

                msg.on('body', (stream, info) => {
                    let buffer = '';
                    stream.on('data', (chunk) => {
                        buffer += chunk.toString('utf8');
                    });
                    stream.once('end', () => {
                        console.log(buffer);
                    });
                });
            });
        });
    });
});

imap.once('error', (error) => {
    console.log(error);
});

imap.once('end', () => {
    console.log('Connection ended');
});