How can I search for the unread email out of thousands in my inbox that have been read?

I like to keep the inbox cleared of unread msgs but occasionally someone sends an email with the wrong date and it gets buried in the past emails. Is there a way to search it out quickly?|||With inbox open----click on View----"all messages", which is just above the delete tab.


Then click on "unread mail" in the drop menu.


That will find and display ---if any---unread mail in a separate window.|||You can select only unread and it will sort them on Yahoo. |||CTRL + F