How to delete all mail on phone

- How to delete all mail on android phone
- How to delete all mail on samsung phone
- How to delete all mail in gmail on phone
- How to delete all mail at once on phone
- How to delete all mail on my android phone
- How to delete mail on phone
- How to delete icloud mail on iphone
- How to delete aol mail on phone
- How do i delete all mail on my phone
- How to delete all emails at once on iphone mail app