Disable the Clutter feature in O365 mailboxes

To disabled the clutter feature in a user’s O365 mailbox run the following command:


Turn off Clutter for single user

Get-Mailbox –identity someone@somewhere.com | Set-Clutter -enable $false 




Single mailbox:

Set-Clutter -Identity <user name> -Enable $false 



If you want to disable this feature for all users in your tenant as an admin, you can do this with PowerShell.
1. Connect to Exchange Online using PowerShell with an admin account.
2. Run the command below.
Get-Mailbox | Set-Clutter -Enable $false 




Turn off Clutter for ALL users

Get-Mailbox -ResultSize Unlimited | Set-Clutter -Enable $False | FL