How to permanently open Replies and Forwards in a New Window in Outlook 2013 / 2016?
Software | Microsoft Office
Click: "File".
Select: "Options" and click "Mail".
Enable or disable the function "Open replies and forwards in a new window".
(Under "Replies and forwards")
Click "OK".
Software, Microsoft Office, Office 365, Outlook 2013, Outlook 2016, Replies and Forwards in a New Window.