Create an email service API that sends emails using SMTP, supports HTML templates, and includes email tracking capabilities.

Project Checklist

• Set up SMTP connection configuration
• Create endpoint to send plain text emails
• Implement HTML email support
• Add email template system
• Create email queue for reliable delivery
• Add basic email validation

Bonus Project Checklist Items

• Implement email tracking (open rates, click tracking)
• Add attachment support
• Create bulk email sending with rate limiting
• Implement email scheduling
• Add email delivery status webhooks
• Create email analytics dashboard

Inspiration (Any companies/libraries similar)

• SendGrid
• Mailgun
• Amazon SES

Hint/Code snippet to start

const nodemailer = require('nodemailer');

const transporter = nodemailer.createTransport({
  host: 'smtp.gmail.com',
  port: 587,
  auth: { user: process.env.EMAIL_USER, pass: process.env.EMAIL_PASS }
});

app.post('/send-email', async (req, res) => {
  const { to, subject, html } = req.body;
  await transporter.sendMail({ from: process.env.EMAIL_USER, to, subject, html });
  res.json({ success: true });
});