Just yesterday I added a Yahoo mail account to my MBP, iPad and iPhone. Everything seemed to be working and syncing across devices, however, today I've noticed that my iPhone is showing 5 unread messages in my Yahoo account. When I go into my inbox on my phone there isn't anything new. In fact, when I go back and using the Mail app look at the Yahoo inbox exclusively, there is nothing there. I read and deleted those 5 emails on my MBP. I'm not sure how to get this working correctly. I cannot seem to get my mail app on my iPhone to recognize that those emails have been read and deleted. Any ideas?