1) Go to your Mail app
2) Under the Mailboxes section at the top of the screen select the email account that is causing you issues
3) Select the Edit button at the top-right corner of the screen
4) At the bottom-left of the screen select the Mark All button
5) Select the Mark as Read option that appears
This will mark the selected emails as read. Because I had over 2,000 unread emails, I had to repeat steps 3-5 about 8 times!!
Let me know if this...