Native Apple Mail.app push notification service for cpanel servers, service is valid for 1 year for 1 server/ip, please make sure that ip matches hostname if it not matches notifications will not work, for the moment service only works on rhel8 cpanel based systems (AlmaLinux and Rocky Linux). Service works on any cPanel version, and dovecot 2.3.x and 2.4.x on any iOS/iPadOS version