Hey everyone I have a macbook pro 10.7.3. I use the Mail email client. Lately the inbox is showing I have 13 new (or unread) messages when I do not. For about 2 months it was showing I had 1 unread message. Now it says I have 13. I've tried marking all messages as Read. Does not work. Any ideas on how to correct this? - or what causes this? Thanks for any insights.