Listmonk: High-Performance Self-Hosted Newsletter Manager (23k Stars)

Listmonk is a fast, self-hosted newsletter manager built for high-volume sends and low overhead.

Core strengths

It handles large subscriber lists with efficient delivery, simple segmentation, and a minimal UI. Setup is faster than most self-hosted alternatives.

Migration notes

Import CSVs, configure SMTP or a transactional provider, then test deliverability before full list migration.