Send mails using NodeJS

Hey, fams! today we are going to learn how to send e-mails, right from our IDE using NodeJS. The module of interest is called Nodemailer.

Prerequisites

🔗 NodeJs
🔗 Nodemailer
🔗 Email account

🎯 Steps
Open editor (VSCode 😁), initialize your project with the command below

npm init -y

This command initiates a package.json, package.json.lock, and index.js (main entry file). The index.js will house all our logic.

Dependencies

📌Install Nodemailer

npm i nodemailer

📌 Import the package inside index.js

const nodemailer = require('nodemailer');

👨🏽‍🏫 For security reasons, make sure you install and use dot.env package to prevent your password from being exposed or pushed to GitHub.
Install dotenv

npm i dotenv -S

Require dotenv in your index.js file. I didn't require it in this project because I am using dummy data.

require('dotenv').config();

Then, create a .env file your email and password

Email= ***********@gmail.com
Password= ******

Logic

🎯 Your auth logic in index.js with dotenv

// Gmail account info
const transporter = nodemailer.createTransport({
    service: 'gmail',
    auth: {
        user: process.env.EMAIL,
        pass: process.env.PASSWORD
    }
});

🎯 Your auth logic in index.js without dotenv. Write the logic below and of course change the email to your own and the password to yours too.

// Gmail account info
const transporter = nodemailer.createTransport({
    service: 'gmail',
    auth: {
        user: '[email protected]',
        pass: 'ilovemymama'
    }
});

🎯 Next use the mailOption to send your message.

// Email info
const mailOptions = {
    from: '[email protected]',
    to: '[email protected]',
    subject: 'How to send emails using NodeJS',
    text: 'Follow the instructions and you will be fine'
};

🎯 Lastly, write:

// Send email 📧  and retrieve server response
transporter.sendMail(mailOptions, function(error, info) {
    if (error) {
        console.log(error);
    } else {
        console.log('Email sent: ' + info.response);
    }
});

When done properly, you should have the following logic in your index.js. That is if you choose not to use the dotenv

To run: type 👇🏼 in your terminal

node index

Note: On your Gmail, do not forget to accept and allow the "Less secure apps" access to use your scripts with your Gmail SMTP connection. Gmail will alert you with an error if this option is off, you need to turn it on.

Multiple emails, CC and BCC

const mailOptions = {
    from: '[email protected]',
    to: '[email protected],[email protected]',
    cc: '[email protected]',
    bcc: '[email protected]',
    subject: 'How to send emails using NodeJS',
    text: 'Follow the instructions and you will be fine'
};

Send attachment

const mailOptions = {
    from: '[email protected]',
    to: '[email protected],[email protected]',
    cc: '[email protected]',
    bcc: '[email protected]',
    subject: 'How to send emails using NodeJS',
    text: 'Follow the instructions and you will be fine',
    attachments: [{
    filename: "robocop.jpg", path: "./img/robocop.jpg"}]
};