I have an email from my Comcast/Xfinity imap email account that won’t delete. If I double click it, it is blank inside. I tried creating a new folder with a different name, moving all the emails except for that one into the new folder and then deleting the folder it was in, which worked… but then it appeared in “Unread” messages and won’t disappear from there!!! It just won’t go away! I can delete any other email, but not this one. There are no attachments, and if I try to right click it and select “Mark as Read” it doesn’t mark it as read either. How can I get rid of it?