Team, I wanted to share, that since installing IOS11 Public Beta 3 on my iPhone and iPad, email coming in from my MIAB server is pushed (this is not using the exchange/z-push services, just a normal IMAP connection. So either apple has fixed the IMAP IDLE command and it’s working similar to how the desktop mail is working, or it’s a fluke.
If anyone else who has installed IOS 11 betas could test and comment if it works for you too or not, we can hopefully get a better picture if its just me, or a glimmer of hope the final release of IOS11 will have finally fixed this email push issue on IOS devices!