@NerdyDad thanks, I read the article before and then forgot... thanks.

To disable for individual users:

Set-clutter -identity [email protected] -Enable $false

For an entire organization (tenant)

Get-Mailbox | Set-Clutter -Enable $false

You do have to be signed into your O365 environment by PowerShell:

$session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri "https://outlook.office365.com/powershell-liveid/" -Credential $cred -Authentication Basic -AllowRedirection

It will ask you to authenticate. Use your normal creds.

Import-PSSession $session
You will see another module load and you're in to run the above scripts.