How to delete all email from Inbox using webmail
Just follow these steps:
1. Locate and click the Show All link:
2. All messages are now listed. Click the Toggle All link to select all messages:
3. All messages are now selected. Click the Delete button to delete all mail:
4. Once cleared of the messages the Inbox displays the following:
5. All the messages previously in the Inbox have been moved to the Trash folder.
Simply follow the same procedure used to remove messages from the Inbox to
permanently remove messages from the Trash folder