Hello.
I have one user who is getting this error. I had him go to Preferences -> Special Folders and asked him to make sure his Trash was set to "Deleted Messages", as this was the default setup. However, neither Junk nor Trash had an entry, and when he clicks on the dropdown only "INBOX" and "Sent Messages" are available.
When I do it with my account, I see all 4 (INBOX, Sent Messages, Junk and Deleted Messages).
How do get the last two added to his account so that he has that functionality?
Thanks