NodeJS SMTP relay example

You can use this Node.js code and enter your own details to run the smtp relay.

Install nodemailer in your Node project

Run this command in your working directory

npm install nodemailer

Include the library in your working class

const nodemailer = require("nodemailer");

Declare your STMP credentials

You should specify your Brevo credentials in order to establish a connection between our server and your application. You will need to make use of the createTransport obeject to define these values.

  let transporter = nodemailer.createTransport({
    host: "smtp-relay.brevo.com",
    port: 587,
    secure: false, // true for 465, false for other ports
    auth: {
      user: "[email protected]", // generated ethereal user
      pass: "xxxxxxxxx", // generated ethereal password
    },
  });

Compose your email object

Next, specify the content and metadata of the email message you want to send through the previously declared transporter object. In this example we have only included text content, but you can also make use of a predefined templateId .



  // send mail with defined transport object
  let info = await transporter.sendMail({
    from: '"Joe" [email protected]', // sender address
    to: "[email protected]", // list of receivers
    subject: "Hello ✔", // Subject line
    text: "Hello {{ contact.FIRSTNAME }} , This is an SMTP message with customizations", // plain text body
  });

Trigger your email

const nodemailer = require("nodemailer");

async function main() {
  

  // create reusable transporter object using the default SMTP transport
  let transporter = nodemailer.createTransport({
    host: "smtp-relay.brevo.com",
    port: 587,
    secure: false, // true for 465, false for other ports
    auth: {
      user: "[email protected]", // generated brevo user
      pass: "xxxxxxxxx", // generated brevo password
    },
  });

  // send mail with defined transport object
  let info = await transporter.sendMail({
    from: '"[email protected]', // sender address
    to: "[email protected]", // list of receivers
    subject: "Hello ✔", // Subject line
    text: "Hello {{ contact.FIRSTNAME }} , This is an SMTP message with customizations", // plain text body
  });

  console.log("Message sent: %s", info.messageId);
  // Message sent: <[email protected]>
}

main().catch(console.error);

Note: This example is if you want to add more customisations into your SMTP email, it will take the attributes if the contact exists within Brevo. You can this JS code in a file through the command line interface or through the API endpoint for Send a Transactional Email.