hello, most probably we went way over what's supposed to be as regards thunderbird folders. one of these folders (with some 5,7 Gb content) finally sort of lost all its subfolders, sub-subfolders and emails. the files are there on the disk, but Thunderbird can't see them anymore. I tried to fix it with the available button, but after 8 hours it was still stuck at the very first step (don't know if there are more, really). also I searched online and found some interesting solutions, among which ne pointed at removing the panacea.dat e global-messages-db.sqlite files in order to force Thunderbird and rebuild its index. I am running v 115 though and there's no panacea.dat here. I wonder if there is any new procedure to get the same result... or else, whatever viable solution that could make me recover the former folders structure. of course, the first thing I would do after recovering would be to simplify the structure and/or reorganise in order for the folders to be less heavy, according to any suggestions of yours... that would be more than welcome :) thanks, kind regards