Disable Reading Pane Compose

Supported on: At least Windows Server 2008 R2 or Windows 7

Registry

HKCU software\policies\microsoft\office\16.0\outlook\message

Value name: disablereadingpanecompose

Enabled: disablereadingpanecompose = 1

Disabled: disablereadingpanecompose = 0

Description

This policy setting allows you to control whether user’s responses to emails are composed inline on the reading pane or in a new window. If you enable this policy setting, responses to emails are composed in new windows. If you disable or do not configure this policy setting, responses to emails are composed inline in the reading pane.