Enable or Disable Plus Addressing (Powershell)
I can't remember the last time I used this but it was very handy when I did need it.
Install-Module -Name ExchangeOnlineManagement Import-Module ExchangeOnlineManagement Connect-ExchangeOnline -UserPrincipalName <your.user@yourdomain.com> Set-OrganizationConfig -AllowPlusAddressInRecipients <$true | $false>
Note: Anything with in the <> greater/less than parentheses should be
replaced with your filter parameters.