Specify default quality of compression done on inlined images inserted in Outlook

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

Registry

HKCU software\policies\microsoft\office\16.0\common\mailsettings

Options

oulookimagedpiindex enum
  • High Fidelity -> 0
  • 330 ppi -> 1
  • 220 ppi -> 2
  • 150 ppi -> 3
  • 96 ppi -> 4

Description

This policy setting allows you to specify default quality of compression done on inlined images in Outlook. If you enable this policy setting, Outlook would compress the inlined images in the message as per the specified quality. If you disable or don't configure this policy setting, inlined images would be compressed at the default quality (220 dpi). Note: This policy setting only applies to subscription versions of Office, such as Microsoft 365 Apps for enterprise.