Iphone email notification not working

- Iphone mail notification not working
- Iphone 6 email notification not working
- Iphone email notification sound not working
- Iphone new email notification not working
- Iphone yahoo email notification not working
- Iphone email notification banner not working
- Iphone mail app notification not working
- Iphone 13 email notification not working
- Iphone 13 email notification sound not working
- Iphone 11 email notification sound not working
- Iphone outlook email notification sound not working
- Iphone 12 email notification sound not working
- Iphone 8 email notification sound not working