Cannot Bulk Delete PMs

When an inbox becomes full/over-full, you can't delete PMs in bulk. You have to go through one by one, which is kind of frustrating. Can this be fixed?

@Miyako — There is a way to delete in bulk!
If you go into your inbox, you'll see the four "main" buttons at the top: "User CP Home", "Messenger", "Your Profile", "Miscellaneous". Underneath that line, you'll see another line of hot links: "Inbox | Compose Message | Manage Folders | Empty Folders | Download Messages". If you click on "Empty Folders", that will bring you to a screen with the folders listed and checkboxes beside them. Select the boxes for the folders you want to clear out ("Inbox", in your case), and then click "Delete" at the bottom. This will remove every message from the selected folder, the exception being those that are marked as "Unread" (unless if you uncheck the box above the "Delete" button, in which case even those not opened will be deleted).