To remove or delete email messages from a particular folder:
1) Select the desired folder
2) Hold down the 'Ctrl' key and then press the 'A' key
3) Click on the Delete or Red X button at the top of the page, or simply press the 'Delete' key on the keyboard
This will delete all the emails displayed on the page. Depending on the the number of emails in the folder and the number of emails displayed , viewing displayed emails, you may have to complete steps 2 and 3, a few times.
NOTE: Both the Junk Folder and Trash folder can be emptied by right clicking on either folder and selecting empty
