Junk	
Junk helps manage junk mail and to limit the junk mail that appears in your Inbox.  When you click Junk, the selected mail message is sent to the Junk Mail folder and the sender’s name is added to your list of Blocked Senders.  Future mailings from names on the Blocked Senders list are automatically diverted to the Junk Mail folder.  Select Edit Blocked Senders on the MailBox menu to edit the names on this list.