Previous blogs have mentioned K-9 is just being rebranded as Thunderbird for Android once the Android app is closer in features to the desktop release. The iOS release will be new entirely as I don’t know of an existing iOS email app they can rebrand.
We used to run firewalls running Fedora at work, works fine. Issue is you’re only getting 6 months of updates, best to look at Rocky Linux for something that doesn’t change much if you do anything beyond a single program.
An Untold History of Thunderbird (blog.thunderbird.net)
How is your experience with Fedora as a server?
linux@programming.dev