So many people asked me to make it open-source, so here you go: MailCheap — Self-hosted newsletters on Amazon SES: 💸 $0.10 per 1,000 emails ✍️ Editor with live preview 📰 Multiple newsletters 📝 Signup forms + API 🌐 Public archive 📊 Stats & growth charts 🧹 List cleanup 📬 Bounce + spam protection → https://github.com/marclou/mailcheap 92% cheaper than Beehiiv (for me). Have fun!