This issue has been resolved.
Thursday, July 11 2013, 1:30 p.m.
ITS is in the process of performing some tests in preparation for the email migration to Office 365. During these tests it is possible that Webmail performance may slow some. The testing is planned to last today, July 11 through tomorrow, July 12. We apologize for any inconvenience that this may cause and thank you for your patience and understanding.