Many users are facing a problem where their apple mail notifications not working and they don't get notified about the important emails. To get rid of this problem, you just have to enable & disable your Apple Mail notification toggle in the Settings > Notifications > Apple Mail. You can see a toggle button which should be enabled, if it is disabled, then simply enable it. And if it is already enable, then disable it & enable it once. Then, simply reboot your iPhone & check it by sending a test mail to yourself.
Thanks a lot!
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