Policy
Turn on purge when switching folders
When "purge on switch" is enabled, IMAP e-mail messages marked for deletion in the current folder will be permanently removed from the server when the user switches to another folder. This setting will allow you to enable the IMAP "purge on switch" feature.
PackMicrosoft Office
CategoryMicrosoft Outlook 2016 / Account Settings / IMAP
Policy ID
3ca015b6ce54Internal name
L_TurnonpurgewhenswitchingfoldersRegistry
Copy registry mappings
HKCU\software\policies\microsoft\office\16.0\outlook\options\mail\enablepurgeonswitch (enabled) = 1
HKCU\software\policies\microsoft\office\16.0\outlook\options\mail\enablepurgeonswitch (disabled) = 0Policy notes
When "purge on switch" is enabled, IMAP e-mail messages marked for deletion in the current folder will be permanently removed from the server when the user switches to another folder. This setting will allow you to enable the IMAP "purge on switch" feature.