Mail push notifications

For 10 years I asked your engineers to fix the problem with push notifications in 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 15.7, 15.7.1 RC, 16.0.3, 16.1 RC; iPadOS 15.7, 16.1 RC. Any ideas?