For several times I asked Apple engineers to fix the problem with push notifications from iCloud email in native mail app. They partly did it - but when I’m offline for hour or more, I don’t receive them. At the same time if there’s a new mail which was sent less than hour during this period it will push more old notification. I’ve checked it in the following versions: iOS 16.1.2; iPadOS 16.1.2. Seems that the problem is close to being solved, but not for 100% yet. Who’s the same problem?
Mail push notifications
Have the same problem