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Microsoft says Windows Mail app won’t fully disappear, but here is why you won’t want to use it
(www.xda-developers.com)
This is a most excellent place for technology news and articles.
So they are keeping the Mail app, but changing it so you can't send or receive email. That seems pretty pointless. Just remove it from Windows altogether and be done with it.
I'm reasonably certain they are not aware of how to remove anything from windows.
Explains why control panel and settings are both still a thing like a decade after they said they'd be removing the former.