About iOS/iPadOS Push Notifications for native Mail App/Client

More than 6 years ago (23-02-2017), cPanel implemented this feature for all cPanel Servers, the way cPanel implemented forced to every server owner to have a Apple Computer with a compatible OS to run macOS Server, buy the macOS Server App to get the APN Certs, export them and install it on you servers, you must do this every year because APN Certs only last one year: