./listmonk --new-configto generate a sample config.toml and add your configuration (SMTP and Postgres DB credentials primarily).
./listmonk --installto setup the DB.
listmonk is free, open source software licensed under AGPLv3. There are several essential features such as user auth/management and bounce tracking that are currently missing. Contributions are welcome.
The backend is written in Go and the frontend is in React with Ant Design for UI. See developer setup to get started.