

My system is not ideal, but I have a lifetime deal with Proton Pass for $1 a month that I hope they never change because if they do, I’m getting off of Proton.
Currently, I have a custom domain that I use with Tuta, but I will most likely switch to a provider that is less secure and more compatible with third-party clients after my year of subscription is up.
I also have a decade plus of email history on Gmail that I need to search through all the time and people still send me emails to my Gmail account.
Ideally, I would have a second custom domain for my Proton Pass email forwarding service, so that I’m not giving spammers my actual domain that I care about.
Also, ideally, I would have a self-hosted email server and client setup where I could see all my email addresses, including an archive of all my Gmail history, in one place, and it would sync changes from clients back to the central server. But I don’t know if that exists.

I run nextcloud on a Raspberry Pi and I don’t use the other apps, just the file stuff. It seems like the best supported option to me.