I have installed Office 2016 Desktop Preview. So far it works fine, and after Installation. it has automatically set-up my mail account from my previous Installation of Office 2007 Pro.
I detected one minor issue. If I have mails in the inbox, there is a "delete Symbol" when I move the mouse over an iondividual E-Mail (a "X" Symbol). If I click on this Symbol, I get an error message saying: "This aciton cannot be processed, as the current object is already deleted". (In my System this message is in German and says: Dieser Vorgang kann nicht ausgefhrt werden, da das Objekt gelscht wurde".)
If I open the E-Mail, I can successfuly use the delete Symbol (from inside the open E-Mail).
Jo