If you are like me, you probably read most of your emails in the reading pane (which displays your emails right there in your Inbox). The problem is that sometimes emails get marked unread just because I scrolled through them on my way to another email. I would prefer to keep that email highlighted so that I know that it still needs my attention.
Here are links to two posts that I think you will find useful if you have a similar problem.
Keep Outlook Emails as Unread until after you actually read them
This post will keep the email UNREAD unless you stop over the email for more than just a few seconds (you can set how long)
Customize how Outlook highlights Unread Emails
This post is optional but you can use to change how unread emails are displayed. You can change the color or font to make them really stand out.
If you have other ideas on how to use Unread emails to get things done, let us know by leaving a comment.