KMail isn’t available on flathub, so the only way you would see it in discover is if you have done what everyone is telling you not to do on arch. You need to uninstall all of the packagekit dependices. Then you will be able to use discover safely and only install flatpaks.

Phone numbers social security numbers

Stop making personal information into digital ids because when it inevitably ends up in some kind of data breach. These companies all throw their hands up saying sucks to be you.

What tablet if you don’t mind me asking?