node js and nodemailer for send emails

Mail send is an important requirement for any type of web application. In this article we will see how we can send an email using nodemailer:

use this command in node application

npm install --save nodemailer

now in app.js file import library and make suggested changes:

const nodemailer = require("nodemailer");
async function main() {
  let authObj = nodemailer.createTransport({
    host: "smtp.office365.com",
    port: 587,
    secure: false, // true for 465, false for other ports
    auth: {
      user: "your outlook email",
      pass: "your outlook password",
    }
  });

 // now use sendMail method using above authObj variable
  let info = await authObj.sendMail({
    from: '"Ashish" <yourmail@domain.com>', // sender address
    to: "receiver mail id",
    subject: "Hello",
    text: "Hello world?" // plain text body
    html: "<b>Hello world?</b>", // html body
  });
}

Above configuration will work in case we are using outlook SMTP. For Gmail change host to:

host: "smtp.gmail.com"

and change auth object as per your gmail username and password:

What should we do in case we want to send mail from html file:

create email.ejs file in our views directory:

<h1>Hello {{name}},</h1>
<div>
    Hope you are doing well
</div>

Now we need to add following code to send email using above html file

let info = await authObj.sendMail({
    from: '"Ashish" <yourmail@domain.com>', // sender address
    to: "receiver mail id",
    subject: "Hello",
// template is our ejs file
    template: 'email',
// context we are using to pass variables to our email template
    context: {
      name: 'Ashish'
    }
  });