how to send emails with mailgun in nodejs

Here are the steps to send emails with Mailgun in Node.js:

1. Install the Mailgun SDK for Node.js by running the command npm install mailgun-js.

2. Require the Mailgun module in your Node.js application by adding the following code at the top of your file:

const mailgun = require("mailgun-js");

3. Create an instance of the Mailgun class by passing in your API key and domain. You can find these credentials on your Mailgun account dashboard.

const api_key = "YOUR_API_KEY";
const domain = "YOUR_DOMAIN";
const mailgun = require("mailgun-js")({ apiKey: api_key, domain: domain });

4. Create an email message by defining the sender, recipient, subject, and body of the email. You can also include attachments if needed.

const data = {
  from: "Sender Name <sender@example.com>",
  to: "Recipient Name <recipient@example.com>",
  subject: "Test Email",
  text: "This is a test email sent using Mailgun.",
  attachment: [
    { data: fileBuffer, filename: "file.pdf" }
  ]
};

5. Send the email by calling the messages().send() method on the Mailgun instance and passing in the email data.

mailgun.messages().send(data, function(error, body) {
  if (error) {
    console.log(error);
  } else {
    console.log(body);
  }
});

6. Test the email functionality by running your Node.js application and checking your email inbox for the test email.