Overwrite or Append Junk Mail Import List

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

Registry

HKCU software\policies\microsoft\office\16.0\outlook\options\mail

Value name: junkmailimportappend

Enabled: junkmailimportappend = 0

Disabled: junkmailimportappend = 1

Description

By default, when a new Junk E-mail Filter list is deployed, Outlook appends the new Junk Mail Import List to the existing list. Enable this setting to replace the existing list with the new list, instead of appending to the current list.