hi I have uninstalled windows 10 and I now have hundreds of emails that I cannot delete. how do I remove them I keep getting a box with  ( An unkowan error has occurred) .

Care to tell us what email system you are using?

In order to help you effectively we need to know exactly what email system you are using.  You can see the differences here

Hello,

You can easily workaround this issue by recreating a new mail profile and sync from the mail server from scratch.

Thanks,