It’s called CIDR notation

https://en.m.wikipedia.org/wiki/Classless_Inter-Domain_Routing

Ya I’m confused why the GitHub repo isn’t updated to 115 and it’s archived…

The Thunderbird team periodically does this and holds back upgrades for existing installs.

The Flatpak author is waiting for Thunderbird’s approval before publishing 115.

https://github.com/flathub/org.mozilla.Thunderbird/pull/306#issuecomment-1632388273

You can’t go wrong with a 2-bay Synology 🤷🏻‍♂️ yes TrueNAS is more “selfhosted”, but the Synology is way easier.

There’s also Infisical if you don’t want to run Vault

https://github.com/Infisical/infisical

I personally use Ansible to deploy my .env files to my Docker host. The .env files are encrypted in Ansible Vault and deployed to the server as chmod 400 so only I can access them.