Restoring third party access to push mails is critical to ensure iOS remains an open platform with basic work tools such as mail/calendar/contacts. Without push, emails are often received with hours of delay. At an age where we receive all sort of urgent informations via this media (OTP, signin alerts, notifications, etc), maintaining a way to push on IMAP is critical. Using third party clients is simply not an option for anyone who wants to benefit from the stock iOS mail app, which is much more polished and integrated with the OS. I wholeheartedly second this feature request, please can an APNS engineer explicit the roadmap here and explain why this was discontinued, given it no longer required to maintain OSX Server, and only the underlaying APNS infrastructure that’s common to all apps. We need an access to com.apple.mail APNS topic, as IMAP Idle is not an option on mobile devices.