Currently using Tutanota but they've just retired my current plan and doubled the price.
I'm looking into hosting my own email. I would like to have encryption but it doesn't function very well when both sender and receiver need to be on the same platform. In addition none of the information being sent by email is overly sensitive so it's not a must.
Anyone that's hosting their own email or has experience/knowledge of Lavabit that would care to chime in I'd be greatly appreciative.
I'm currently running OPNsense virtualised in Proxmox. It's a little confusing if you haven't run a custom firewall before but the setup was relatively simple and works flawlessly now that I understand it a bit better. The only downside being if you are running it on the same machine as your services and need to restart, your network will go down as well. Ideally I will get another machine just for network services as it sounds like you are doing.