Are you tired of spending tons of money for Mailchimp? Let me show you how to set up listmonk, a free and open-source newsletter and mailing list manager. We will be using docker-compose for orchestration and NGINX + certbot for automated SSL certificates. The final setup will cost you a little bit of effort and $0 in running costs as long as you don't send more than 50,000 emails.
Whenever I set up a new server I make sure I set up passwordless SSH login. It makes it easy to get into a box without typing in the password every single time. Learn about how you can do something similar for your servers.