It's still a WIP but that's pretty much where I'm at as well, was going crazy trying to figure out which multi terabyte service I was going to use when in reality the actually irreplaceable stuff falls well under a single TB of data lol. Might go with Backblaze as well.
Bit of an odd journey here, migrated from a Windows 10 + Docker on WSL2 setup on the side of my main PC to a dedicated DIY Proxmox server/NAS setup. Set it up with snapraid since it's mostly media files, will add a proper ZFS mirror or two in the future when I'm able to afford the upgrade.
I'm mainly in it for the usual media services, Jellyfin, Sonarr, Radarr, Prowlarr, plus Jellyseerr (Overseer fork with Jellyfin support). Got Nextcloud as well, plan on looking into Lidarr and Mylarr at some point too.
Also have a Pi 4 running Home Assistant and Adguard DNS, as well as Tailscale all over for VPN. Contemplating moving HA to the proper server for the performance/storage reliability boost but at the end of the day it only really toggles lights rn so no real need.
They might be confused because your original comment said sending emails is the only thing you can do, I'm assuming it's a typo and you meant it's the only thing you can't do