Entourage 2008 provided support for WebDAV.  This allowed me as a government employee to access my Navy Marine Corps Intranet (NMCI) webmail via Entourage which increased my productivity ten-fold by allowing me to manage my emails and pull them into personal folders.  Outlook 2011 for Mac no longer provides WebDAV support.  I would beg you to please reconsider whatever decision was made and provide WebDAV support to Microsoft Outlook for Mac 2011 and later.  Thank you so much!