Zero-dependency transactional email for Deno 2 & Deno Deploy

import { SadaSend } from 'npm:sadasend';

const apiKey = Deno.env.get('SADASEND_API_KEY');
const sadasend = new SadaSend({ apiKey });

Deno.serve(async (req) => {
  if (req.method !== 'POST') return new Response('Method not allowed', { status: 405 });

  const { email, alertMessage } = await req.json();

  const { data, error } = await sadasend.emails.send({
    from: 'alerts@yourdomain.com',
    to: email,
    subject: 'System Alert Notification',
    html: `<p><strong>Alert:</strong> ${alertMessage}</p>`,
    tags: ['monitoring', 'deno'],
  });

  if (error) {
    return new Response(JSON.stringify({ error: error.message }), { status: 500 });
  }

  return new Response(JSON.stringify({ success: true, id: data.id }), {
    headers: { 'Content-Type': 'application/json' },
  });
});