Since the last 2 IOS updates, I've lost my new mail alert tone. I was hoping with the release of 15.3 it would be sorted, but no luck. I have checked that the sounds setting for mail is still on plus looked in the notifications setting to check that all options for mail are turned on, but still no luck.
If anyone has the same issue and has managed to fix it I'd love to hear from you. It's not the end of the world, but means I have to check more regularly for any new mail I may have missed.