I had this question after viewing Disable Mail app in Windows 10 via GPO
I have not been able to disable this app by GPO. I've installed the Windows 10 admx files and disabled the app store and apps from the app store via GPO but it has no effect. From what I've read, it seems that for a GPO to work in disabling the mail app (and the store in general) you have to have the enterprise version of Windows 10 or use Intune (which also only works with enterprise). Is this true?
It is extremely frustrating as it appears that Microsoft has loaded Windows 10 with unwanted apps and then wants us to pay more to remove them in a systematic way.