Push email to my iCloud address still not working consistently, not on any of the betas, nor on the now official 10.1 release.
I've had to abandon using my iCloud address, as I rely on timely emails for work notifications, and I often don't get iCloud emails until I manually open the app. It worked fine until a week or two ago.
Ironically, I was forwarding my Gmail to my iCloud address since the Mail app won't receive Gmail in real-time.
There are numerous threads in Apple's support forums about this, but no consistent answers.
I hope the problem gathers more publicity.
EDIT: iCloud email is still delivered in real-time to my Mac, however.
10-26-2016 02:00 PM