When I read a message on my mac the little badge icon that is over the message icon in the dock doesn't go away. It is very annoying. Any suggestions. It is stuck on 2 messages showing but there is nothing new.
I was going to say to check the sidebar next to the various mailboxes for any number showing, and if needed select any and sort on the "•" and scroll for any marked unread --- until I saw the word Yosemite.