Plantsowner I have a couple of questions about your account
- Is this account IMAP or POP (if you don't know look in Mail > Preferences > Accounts — select an account and it should indicate whether it is POP or IMAP.
- If you look at the list of mailboxes in Mail is your Junk folder…
- under one of your email accounts?
- If yes is it the same account where the problem is occurring?
- On My Mac?
- Is this by any chance a Google Mail account?
All my accounts are IMAP. No Google accounts. One Yahoo account and thee mail.com accounts. They all have junk folders. And now that I looked more closely, all the accounts have inactive Bulk folders in white. The Bulk folder under "On my Mac" is normal color but nothing in it. I didn't notice it earlier because usually it's my Yahoo account that has a lot of spam in the bulk folder. So, none of the Bulk folders are working it seems.