copied from reporter's https://support.mozilla.org/en-US/questions/1388452 ... Hello! I wanted to merge two local folders. Used drag and drop from one local folder to another. Now I realize it was mistake to do it with 5000+ emails. Anyway Thunderbird functions OK, but I have problem accessing these folders, since they don't show messages. The one from which I draged messages is still showing them, but the other to which I dropped messages not... and that is the more important one. Before moving I renamed destination folder, but now I see that Thunderbird also created another (new local folder) because my action of moving large number of emails... Anyway these folders look empty. Is there any easy way to stop the action or undo it somehow... cause i really don't wanna loose those emails. Please help, if it is possible! Thanks in advance! Marko