How to delete 15k emails on iphone at once?

I know that I can chose Edit in my inbox and select multiple emails to delete, but I have over 15, 000 emails and i'm trying to create more space. Help.

Added (1). How do i set it as a memory device… I wnt to try that first

Use history eraser for iphone… It's an app

Can't you just plug it into a PC (or Mac) with USB lead set it as a memory device highlight them and hit delete? There on a memory card anyway aren't they?

You don't need an "app" by the time you download it figure how to use it etc… You could have done the above.

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