Hello, I write because today I found that many email which were saved on some local folders have been deleted I did not that, and cannot figure out how that could happen I checked the Thunderbird setting for retention but found nothing useful I have set the option "Don't delete any message" at any level Now I need an add-on for Thunderbird which herlps me to undelete the lost messages When I select any local folder's properties it shows me that the size of the folder is not zero, altough the folder appears to be empty That means that the deleted messages are still on the disk Could you please point me to any add-on or package for Thunderbird which can undelete deleted emails ? My Thunderbird version is 115.18.0 (64-bit) on Linux Ubuntu 22.04 LTS Thank you for your attention and support Kind regards, Filippo Lombardo