A simple question to this community, what are you self-hosting? It’s probably fun to hear from each-other what services we are running.
Please mention at least the service (e.g. e-mail) and the software (e.g. postfix). Extra bonus points for also mentioning the OS and/or hardware (e.g. Linux Distribution, raspberry pi, etc) you are running on.
I’m self-hosting my mail server for all kinds of neat tricks, like turning mailing lists into RSS feeds and putting attached bills in the right folder. But it is tricky to pull off, because 90% of all email is spam so you must take that seriously because otherwise nobody will accept you mail. One thing I learned quickly is not to use PGP. They almost always and up in spam boxes.
I switched from radicale to baikal because vdirsyncer (which I then used) didn’t agree with radicale on the caldav standard. And I’m very happy with Filestash. It’s fast and does the only thing I need it do do, stash files.
BTW I used to use NextCloud, but that was way too much work and I really like tools that do just one thing and do it well.
I also self host a mail server but I don’t think I’d every put anything super important through it. Right now I use it to send emails from the services I run (plex, file sharing, etc). It’s a fun little project but if you want something reliable it’s going to get pricy very quick.