How to open replies and forwards in a new window

Outlook 2016
By default, if Reading pane is opened, Outlook opens replies and forwards in the same window, but you can fix this behavior and open them in a new window.
Replies and Forwards in the same window Outlook 2013

To open replies and forwards in the new window, follow the next steps:

   1.   On the File tab, click the Options button:

Outlook 2013 options

   2.   In the Outlook Options dialog box, on the Mail tab, under Replies and Forwards, check Open replies and forwards in a new window:

Mail options Outlook 2013

   3.   Click OK:

Replies and Forwards in a new window Outlook 2013

If you have any questions or suggestions, please feel free to ask OfficeToolTips team.