Until this morning, I appreciated a feature of Thunderbird that allowed expansion of inbox folders when I would drag an email to a subfolder destination. Once the email was dropped into the subfolder, the group of organized folders would collapse back to the original view. For reasons unknown, this feature has stopped today. Is there a setting to allow for the automatic expansion and collapse of inbox folders? If this feature can be reset, please inform me on how this may be done. Thank you. John Westover, datavet@gmail.com