Local Devenv Nodemailer

docker-compose.yml

version: '3'
services:
  mailhog:
    image: mailhog/mailhog
    container_name: mailhog
    ports:
      - "1025:1025"
      - "8025:8025"

index.js

import nodemailer from 'nodemailer';
import dotenv from 'dotenv';

dotenv.config();

async function main() {
  let transporter;

  if (process.env.DEVENV === 'development') {
    transporter = nodemailer.createTransport({
      host: 'localhost',
      port: 1025,
      secure: false, // Note that secure should be false for local testing
      auth: null, // No auth in local development with Mailhog
    });
  } else {
    transporter = nodemailer.createTransport({
      host: 'smtp.resend.com',
      port: 465,
      secure: true,
      auth: {
        user: 'resend',
        pass: 're_123456789',
      },
    });
  }

  const info = await transporter.sendMail({
    from: '[email protected]',
    to: '[email protected]',
    subject: 'Hello World',
    html: '<strong>It works!</strong>',
  });

  console.log('Message sent: %s', info.messageId);
}

main().catch(console.error);