A customer at a university wanted to ensure important system messages were not put into the clutter folder in user’s mailboxes. They asked how can you whitelist these system messages. I found a way to do it with transport rules with this example syntax: New-TransportRule -Name <name_of_the_rule> -SubjectContainsWords "Meeting" -SetHeaderName "X-MS-Exchange-Organization-BypassClutter" -SetHeaderValue "true" The header…