I have a bunch of email subfolders showing up in Thunderbird which have nothing in them. Their names appear in italic, greyed-out. No matter how many times I delete them, when I reopen Thunderbird they've just reappeared in their previous location. This includes three in the Deleted folder. I'm using IMAP and the phantom folders are not there in my provider's webmail interface, so it must be a local problem. I know from internet search that lots of people have had this. Solutions elsewhere that I've already tried and that didn't work: - unsubscribing from the folders: they appear in the subscribed list but without any checkbox next to them - deleting the .msf, panacea, etc. files: the folders reappear just the same after doing this Has anyone found a fix that works? This is my work email account and the clutter in my folder pane is really unhelpful!