Hello friend, and welcome to the forums!
So, I still run the /e/Cloud server, dated as it is, it does still work for me.
However, I’ve been working on a project to address exactly this problem - I’m calling it “After -e-”, and it’s a spiritual successor to /e/Cloud server. My goal is to make it a drop-in replacement for /e/Cloud Server, with some improvements like SSO, Immich and Vaultwarden integration, as well as a much easier install process and more user-friendly descriptions of what’s what, to help with the installation and initial config. A migration script is on my radar as well.
The project itself is just a series of shell scripts that pull the other projects together; I’ll admit that the scripts themselves are being written by AI, but I’ve been obsessive about quality control, at least in terms of the output (everything MUST work before I move forward; I’ve spun up dozens of VMs to squash every bug that comes up, and I spent weeks squashing SSO bugs and refused to move on until everything preventing my test user logging in was completely resolved).
Right this second, i’m working on the fact that Stalwart, the mail server doesn’t seem to want to handle inbound mail properly…but the initial config scripts, identity management, SSL cert acquisitions and renewals, reverse proxy configs, and outbound mail all work.
You said you didn’t want to host your own mail, and I do have an installation mode exactly for that purpose, but it’s got rougher edges than the others, and the Nextcloud customization is currently where I’m working on my development.
If you’re interested in a “pre alpha” version of After -e- , feel free to send me a DM and I’ll get you a ZIP file of my current build.