While horde works reasonably well, I have ongoing issues with it losing the ability to authenticate, and it also seems to not handle deletion of emails over activesync in a seamless manner.
Kopano seems quite good overall, but I don’t like the idea of having emails stored in a database. It seems much simpler to use dovecot as is.
After looking around and seeing quite a few people like SOGo I have installed it in a container on my proxmox server and have just gotten up and running so far it seems like a sensible option to round out email service.
Having said that, I’d like to have it in app form integrated into UCS, but I have zero experience or understanding of how apps are packaged and work in UCS.
Does anyone have any experience with that and also have some interest in collaborating on turning SOGo into an app for UCS.
Also the other app I’m missing that I’d like is Dokuwiki. I think that one is easier to work around if needed, but if I can get over the learning curve for setting up Apps for UCS I might give that one a go next.