Originally Posted by Dubdub

Moved to the proper section.

Are you on BES or BIS?

Could you please explain in a bit more detail. If you use BIS, email doesn't sync. Email is pushed to your BB from your email ISP/server and it is also pushed to your PC's email client, i.e. Outlook. If you read in one place, it will not show up as read in the other. This is how BIS works.