Pass variable to html template in nodemailer

Question

I want to send email with nodemailer using html template. In that template I need to inject some dynamically some variables and I really can\'t do that. My code:

Answer 1

I use it in all my projects. more clean and up to date and understandable. callback hell doesn't exist. sendMail.ts The html file reads with handlebar, puts the relevant variables into the contents, and sends.

import * as nodemailer from 'nodemailer';
import * as handlebars from 'handlebars';
import * as fs from 'fs';
import * as path from 'path';

export async function sendEmail(email: string, subject: string, url: string) {
  const filePath = path.join(__dirname, '../emails/password-reset.html');
  const source = fs.readFileSync(filePath, 'utf-8').toString();
  const template = handlebars.compile(source);
  const replacements = {
    username: "Umut YEREBAKMAZ"
  };
  const htmlToSend = template(replacements);
  const transporter = nodemailer.createTransport({
    host: "smtp.mailtrap.io",
    port: 2525, // 587
    secure: false,
    auth: {
      user: "fg7f6g7g67",
      pass: "asds7ds7d6"
    }
  });
  const mailOptions = {
    from: '"noreply@yourdomain.com" ',
    to: email,
    subject: subject,
    text: url,
    html: htmlToSend
  };
  const info = await transporter.sendMail(mailOptions);
  console.log("Message sent: %s", info.messageId);
  console.log("Preview URL: %s", "https://mailtrap.io/inboxes/test/messages/");

}