I self-host literally everything (email, calendar/contacts, VOIP, XMPP, you name it) from by basement with used 1U servers from eBay and a cable internet connection.
It was probably more hassle than most people would want to bother with to get it set up. But, with everything up and running, there's very little maintenance. I probably spend a few hours a month tinkering still, just because I enjoy it.
I use a stack of Proxmox VMs, FreeIPA for authn/authz, and Rocky Linux for all servers and workstations. My phone runs GrapheneOS with a Wireguard VPN back to the house. I don't expose anything to the public internet unless absolutely necessary.
I recently anonymized and Ansibilized my entire setup so that others might get some use out of it:
It was probably more hassle than most people would want to bother with to get it set up. But, with everything up and running, there's very little maintenance. I probably spend a few hours a month tinkering still, just because I enjoy it.
I use a stack of Proxmox VMs, FreeIPA for authn/authz, and Rocky Linux for all servers and workstations. My phone runs GrapheneOS with a Wireguard VPN back to the house. I don't expose anything to the public internet unless absolutely necessary.
I recently anonymized and Ansibilized my entire setup so that others might get some use out of it:
https://github.com/sacredheartsc/selfhosted