Modern email API for developers with native TypeScript support and React Email templates. 3000 free emails/month, no credit card required. Most popular email solution in the Next.js ecosystem.
Install @resend/node, create an API key, and call resend.emails.send() with from, to, subject, and html fields. That is everything you need to send production-quality transactional emails. No SMTP configuration, no IP warmup, no deliverability headaches.