How to delete all of your email on Yahoo Mail or easily archive your inbox

You can delete all of your emails on Yahoo Mail using "Select All" repeatedly, or you can use the "Clean your Inbox" tool to ...

How to delete multiple emails at once in Microsoft Outlook and empty your inbox faster

You can delete multiple emails at once when your Outlook inbox or any other Outlook folder is cluttered.

This Gmail trick will keep your messages and clear your storage

CNET has the full steps over at its site, but in Gmail you can use the "Forwarding POP/IMAP" tab to forward all your emails and have them automatically deleted from your original account. From there, ...