I am experiencing this exact same thing and have been racking my brain over this for the past several hours (I've never had this issue)...just got a new iphone16pro and have it sitting side-by-side with my iphone15pro and the 15 pops up Mail notifications while the 16 does NOT. They are setup exactly the same (restored the 16 from the 15) with the exception that my 16 is on 18.2 My 15 is still on 18.1.1.
I can update the 15 to 18.2 if needed, but I have a feeling that's the problem...bug in 18.2
jesusfreak455
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