Send e-mail campaigns, newsletters, manage mailing lists, all from a powerful self-hosted dashboard released as a single binary. High performance and feature packed open source app written in Golang, and backed by Postgres. https://listmonk.app/
Listmonk helped us to manage newsletter campains for a whole year, from opening the waitlist to the launch. It is so intuitive and fun to use. For sure it will stay with us much longer!