listmonk.no2id.uk
Cribbed together from:
- https://listmonk.app/docs/installation/
- https://www.maketecheasier.com/create-own-newsletter-with-listmonk/
- https://yasoob.me/posts/setting-up-listmonk-opensource-newsletter-mailing/
- https://github.com/yasoob/listmonk-setup
- https://www.digitalocean.com/community/tutorials/how-to-install-wordpress-with-docker-compose-on-ubuntu (for a more 'me' way of doing certbot)