Yeah I didnt go through any of that, I didn't have to setup the whole thing from scratch, yunohost already comes with the email stack ready to use, i just configured it with my personal domain etc. The most important thing for me was getting the static ip. After that i just have it running, no maintenance whatsoever. You can try it on a VM, I run it on a VM. You don't need a static ip right away, most of the times your ip will be the same, it's good enough to try it. Check internetcu.be I was going to buy one of the cubes but I already had a Yunohost server, so I just got the VPN to get a static ip for the email in yunohost.