​
Prerequisites

You will need an API key and a verified domain to get the most out of this guide:

​
SMTP credentials

To set up your SMTP integration, you’ll need to provide the following credentials:
  • Host: smtp.unsend.dev
  • Port: 465, 587, 2465, or 2587
  • Username: unsend
  • Password: YOUR-API-KEY

​
Example with Nodemailer

Following example with Nodemailer shows how you can send mails with SMTP support from Unsend and Nodemailer. 
const nodemailer = require("nodemailer");

const transporter = nodemailer.createTransport({
  host: "smtp.unsend.dev",
  port: 465,
  secure: false,
  auth: {
    user: "unsend",
    pass: "us_123",
  },
  tls: {
    rejectUnauthorized: false,
  },
});

const mailOptions = {
  to: "[email protected]",
  from: "[email protected]",
  subject: "Testing SMTP",
  html: "<strong>THIS IS USING SMTP,</strong><p>Unsend is the best open source sending platform<p><p>check out <a href='https://unsend.dev'>unsend.dev</a>",
  text: "hello,\n\nUnsend is the best open source sending platform",
};

transporter.sendMail(mailOptions, (error, info) => {
  if (error) {
    console.error("Error sending email:", error);
  } else {
    console.log("Email sent successfully:", info.response);
  }
});