Email Shouldn't Feel Like 1999

Every modern web app sends transactional emails — welcome messages, password resets, receipts, notifications. Yet the tools for building and sending these emails are stuck in the past. Developers are forced to write HTML tables (a layout technique from the 1990s) because email clients still don't support modern CSS. Resend is reimagining the entire stack.

Founded in January 2023 by Zeno Rocha and Bu Kinoshita, Resend provides a modern email API that lets developers send transactional emails through clean, developer-friendly endpoints. More importantly, the company created React Email — an open-source framework that lets developers build email templates using React components instead of archaic HTML tables. The project has crossed 8,000+ GitHub stars.

How It Works

Developers write email templates using familiar React components, preview them in the browser just like any other UI, and send them through Resend's API with a few lines of code. No more wrestling with inline styles, table-based layouts, or testing across dozens of email clients. The API handles delivery, analytics, and reputation management behind the scenes.

Why It Matters

The $3 million seed round, backed by Y Combinator, SV Angel, and angels including Dylan Field (Figma), Guillermo Rauch (Vercel), and Paul Copplestone (Supabase), reads like a who's-who of developer tools. Rocha intentionally kept the round small to avoid dilution. The strategy validated spectacularly — Resend later raised an $18 million Series A, proving that a great developer experience in a boring category can build a breakout company.