We are running Outlook 2016 to receive email from an IMAP webmail provider on a Windows 10 Pro 1909 PC.
We have tried to delete unused sub-folders from the Inbox, Trash, etc. folders.
Our approach has been to right click on the sub-folder we want to delete, look at the window that opens, and click on Delete Folder.
The target folder disappears for an instant and then reappears.
We have tried moving the unwanted sub-folder to Deleted Items and then use the method outlined above – no luck.
We have also tried to delete the folders from our email providers web site with no luck.
Any thoughts as to how to delete the sub-folders?