i am running Outlook 2011 on iMac. I have an email that will not move or delete out of my inbox. When I check on my other synced devices (iphone and ipad) including Outlook web access, the email is not there !
This knowledge base article from Microsoft <http://support.microsoft.com/kb/2360509> covers rebuilt Outlook 2011 Mac databases. Following the steps listed may clear up your trouble with the errant email.