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How to send email notification in node.js?

In this tutorial, we learn how to send EMAIL Notification using NodeJs.

Nodemailer is a module of Node.js which is used for sending Mail.

Install Nodemailer :-

File Name :

npm install nodemailer

Nodemailer features :-

  • zero dependencies :- A single module with zero dependencies – code is easily auditable
  • Heavy security.
  • nicode support to use any characters, including emoji .
  • Use HTML content, as well as plain text alternative
  • Add Attachments to messages
  • Embedded image attachments for HTML content
  • Secure email delivery using TLS/STARTTLS
  • SMTP support

    • nodemailer module is used to send an email in Node.js. First install the nodemailer module from npm.

    File Name :

    npm install nodemailer

    you can include Nodemailer module in any application:

    File Name :

    var nodemailer = require('nodemailer');

    Features of Nodemailer:

    File Name :

  • It supports various features like adding HTML in the mail, Unicode characters, sending attachments with the text, etc.
  • It uses the simple mail transfer protocol (SMTP).

    • How to Send an Email

    First import this into our application.

    var nodemailer = require('nodemailer');

    Create Transporter Object: createTransport() method in nodemailer which accepts an object and finally returns a transporter object. This object will be required to send emails.

    const transporter = nodemailer.createTransport(transport[, defaults]);

    File Name :

    const nodemailer = require('nodemailer');
    const secure_configuration = require('./secure');

    const transporter = nodemailer.createTransport({
    service: 'gmail',
    auth: {
    type: 'OAuth2',
    user: secure_configuration.EMAIL_USERNAME,
    pass: secure_configuration.PASSWORD,
    clientId: secure_configuration.CLIENT_ID,
    clientSecret: secure_configuration.CLIENT_SECRET,
    refreshToken: secure_configuration.REFRESH_TOKEN
    }
    });

    const mailConfigurations = {
    from: 'sana@gmail.com',
    to: 'mahira@gmail.com',
    subject: 'Sending Email using Node.js',
    text: 'Hi! There, You know I am using the NodeJS '
    + 'Code along with NodeMailer to send this email.'
    };

    transporter.sendMail(mailConfigurations, function(error, info){
    if (error) throw Error(error);
    console.log('Email Sent Successfully');
    console.log(info);
    });

    Example

    File Name :

    var nodemailer = require('nodemailer');

    var transporter = nodemailer.createTransport({
    service: 'gmail',
    auth: {
    user: 'email@gmail.com',
    pass: 'password'
    }
    });

    var mailOptions = {
    from: 'sana@gmail.com',
    to: 'mahira@yahoo.com',
    subject: 'Sending Email using Node.js',
    text: 'That was easy!'
    };

    transporter.sendMail(mailOptions, function(error, info){
    if (error) {
    console.log(error);
    } else {
    console.log('Email sent: ' + info.response);
    }
    });

    Multiple Receivers

    File Name :

    var mailOptions = {
    from: 'mahtab.habib@gmail.com',
    to: 'sana@yahoo.com, mahira@yahoo.com',
    subject: 'Sending Email using Node.js',
    text: 'That was easy!'

    html: '<h1>Welcome</h1><p>That was easy!</p>'
    }

    Example :-

    File Name :

    app.post('/mail-sent', (req, res) => {
    let body = req.body
    let me = body.me //sender id
    let pass = body.password //sender password
    let to = body.to // receiver id
    let sub = body.sub //subject name
    let text = body.text //body text
    var transporter = nodemailer.createTransport({
    service: 'gmail',
    auth: {
    user: me,
    pass: pass
    }
    });

    var mailOptions = {
    from: me,
    to: to,
    subject: sub,
    text: text,
    };

    transporter.sendMail(mailOptions, function (error, info) {
    if (error) {
    console.log(error);
    } else {
    console.log('Email sent: ' + info.response);
    res.status(200).send({
    success: true,
    msg: "mail sent"
    })
    }
    });
    })

    Example Send Email:-

    File Name : server.js

    // server.js
    var express = require('express'),
    path = require('path'),
    nodeMailer = require('nodemailer'),
    bodyParser = require('body-parser');

    var app = express();
    app.set('view engine', 'ejs');
    app.use(express.static('public'));
    app.use(bodyParser.urlencoded({extended: true}));
    app.use(bodyParser.json());
    var port = 3000;
    app.get('/', function (req, res) {
    res.render('index');
    });
    app.post('/send-email', function (req, res) {
    let transporter = nodeMailer.createTransport({
    host: 'smtp.gmail.com',
    port: 465,
    secure: true,
    auth: {
    user: 'xxx@xx.com',
    pass: 'xxxx'
    }
    });
    let mailOptions = {
    from: '"Arham Kalam" <xx@gmail.com>', // sender address
    to: req.body.to, // list of receivers
    subject: req.body.subject, // Subject line
    text: req.body.body, // plain text body
    html: '<b>NodeJS Email Tutorial</b>' // html body
    };

    transporter.sendMail(mailOptions, (error, info) => {
    if (error) {
    return console.log(error);
    }
    console.log('Message %s sent: %s', info.messageId, info.response);
    res.render('index');
    });
    });
    app.listen(port, function(){
    console.log('Server is running at port: ',port);
    });

    app.set('view engine', 'ejs');
    app.use(express.static('public'));
    We are setting an ejs templating engine for our application. Also, we are serving static files from the public directory.

    index.ejs

    File Name : views/index.ejs

    <!DOCTYPE html>
    <html>
    <head>
    <meta charset="utf-8">
    <title>Nodemailer Email Example</title>
    <link rel="stylesheet" href="bootstrap.min.css">
    </head>
    <body>
    <div class="container"><br />
    <h1>Send The Email</h1><br />
    <form action="/send-email" method="post">
    <div class="row">
    <div class="col-md-4"></div>
    <div class="form-group col-md-4">
    <label for="to">To:</label>
    <input type="email" class="form-control" name="to">
    </div>
    </div>

    <div class="row">
    <div class="col-md-4"></div>
    <div class="form-group col-md-4">
    <label for="subject">Subject:</label>
    <input type="text" class="form-control" name="subject">
    </div>
    </div>

    <div class="row">
    <div class="col-md-4"></div>
    <div class="form-group col-md-4">
    <label for="body">Body:</label>
    <textarea cols="5" rows="5"class="form-control" name="body"></textarea>
    </div>
    </div>
    <div class="row">
    <div class="col-md-4"></div>
    <div class="form-group col-md-4">
    <button type="submit" class="btn btn-success">Send</button>
    </div>
    </div>
    </form>
    </div>
    </body>
    </html>




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