I was under the impression that Microsoft killed "Clutter" and replaced it with "Focused Inbox" a long time ago, but it appears that it is still possible to enable "Clutter" from PowerShell. "Clutter" has an advantage over "Focused Inbox" in that it is not tied to Outlook and works within all email clients.
To enable "Cutter" run:
Set-Clutter -Identity <username> -Enable $true
To disable, run:
Set-Clutter -Identity <username> -Enable $false
To check the status of the "Clutter" for a user run:
Get-Clutter -Identity <username>
November 2023
Microsoft Office 365
