How does CheapStack handle email sending?

CheapStack uses Resend for transactional email delivery. The SaaS Boilerplate ($59) includes a Resend client in src/lib/email.ts with helper functions for sending transactional emails (welcome, password reset, invoice notifications). React Email templates are included for HTML email rendering.

import { Resend } from "resend";
const resend = new Resend(process.env.RESEND_API_KEY);

await resend.emails.send({
  from: "App <noreply@example.com>",
  to: "user@example.com",
  subject: "Welcome!",
  html: "<h1>Welcome</h1><p>Thanks for signing up.</p>",
});

Which CheapStack product includes Transactional email?