How to Delete All of My Email at Once

Open your web-based email and log in using your username and password.
Click 'New Mail' or 'Inbox' to view your mail.
Click the very first check box that is on the line above the first email. This check box selects each email in your Inbox. If you need to keep certain emails, unselect the individual check boxes next to each email to prevent erasing them.
Press the 'Delete' button in the webmail interface to delete all of your selected emails.
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