Thank you for your report. We are unable to go any further with this without the information requested by mcas. Closing the report, but feel free to reopen it or open a new one with the necessary information.
FWIW, I saw something similar once on an IMAP account. The reason was that the IMAP server was incorrectly set up for subfolders with mbox format. Maybe that is what you are seeing as well. WFM ** Changed in: thunderbird (Ubuntu) Status: Incomplete => Invalid -- unable to delete thunderbird subfolder https://bugs.launchpad.net/bugs/118219 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs