Thunderbird - Problem My email address is: finnvebirk@webspeed.dk (alias: evab@webspeed.dk ) I have used Thunderbird email for many years. I have archive folders with more than 50 folders and sub-folders. Overall, I have several thousand emails in my archive folders. After I wanted to create a sub-folder and move it to another location, the following has happened: All my folders and sub-folders are mixed together and arranged in a changed order. All emails in my archive folders and sub-folders have disappeared - all folders are completely empty. I think maybe a folder called 'Local folders' has disappeared. It is no longer possible to move emails from the Inbox to the empty folders. NOTE: Inbox, Sent and Trash still works. Question-1: What happened ? What can I do ? Can I recover all my emails in the archive folders ? Question-2: Can I restore my Thunderbird mail system as it was, e.g. 2 weeks ago ? Question-3: As an emergency plan (if all my emails are lost !): Can I reset Thunderbird without deleting mails in Inbox, Sent and Trash ? If Yes – How do I do that ?