Many other guides dive deep into 10 plus pages of how to set up such a service with Dovecot, Postfix and a web server all from the command line, but this one is a lot simpler because most of what you need is inside Citadel. Citadel also has calendar, Contacts, Notes, Tasks and chat rooms so can be a good alternative to Google or other providers. Your only cost really is the Raspberry Pi and a domain name if you don't already have one.

You could tweak this a bit further by using your own DNS provider (or alternative to Cloudflare) and considering an external hard drive connected to the Pi for reliability.

See https://pimylifeup.com/raspberry-pi-email-server/

#technology #email #privacy #raspberrypi #alternativeto #opensource