No, Outlook doesn't track messages that were unread moments ago.

"Joe" <Joe@discussions.microsoft.com> wrote in message
news:C0D2F606-03E9-4F11-8F8D-0C7178346FE0@microsoft.com...
> I sometime leave message as unread after I have read them as a reminder
> that
> I have a task to perform. However, today I mistakenly marked all of my
> messages as read. Is there a way to undo this error? Thanks, Joe
08 Sep 2008Outlook email.Joe
08 Sep 2008|- Re: Outlook email.Vince Averello [MVP -...
08 Sep 2008\ RE: Outlook email.Mary
All times are in (US) Eastern Daylight Time (GMT -4:00)