@gemlog
Did you ever try DeltaChat — the thing that adds an IM-like interface to e-mail?
They have developed a set of scripts to help people self-host e-mail serviced compatible with it: https://github.com/deltachat/chatmail
They expect the distro of your VPS to be systemd-based so I probably won't be able to use it as is, but essentially, they are just deploying dovecot and postfix and I intend to do something similar.
@gemlog
It's one of the motivations behind switching to self-hosting for me — to be able to use it with DeltaChat, as with Proton I'm unable to — they aren't providing direct SMTP access, only via their own proton-bridge, which is intended to be run locally — and running it on a phone doesn't sound like a good idea 😅