Display Sender Picture
Supported on: At least Windows Server 2008 R2 or Windows 7
Registry
HKCU
software\policies\microsoft\office\16.0\outlook\options\mail Value name: showcontactpicture
Enabled: showcontactpicture = 1
Disabled: showcontactpicture = 0
Description
This policy setting controls whether Outlook displays pictures in email headers for senders of email messages and meeting requests. If you enable or do not configure this policy setting Outlook displays pictures for senders if they are available. If you disable this policy setting, pictures of senders will not be displayed.