I have several email accounts linked in Thunderbird. All, but one (Gmail), displays a confirmation screen when I attempt to empty the trash folder. How do I turn on the Empty Trash Confirmation for Gmail? Note: When the Empty Trash Confirmation is displayed there is a checkbox to "Don't Ask Me Again". I may have accidentally clicked this dialog box for my Gmail Trash Folder but I can't find how to bring back the Confirmation. Thank you for your help!!