Represents a message sent as part of a private conversation in Chatter. This object is available in API version 23.0 and later.
Use this object to view and delete messages sent or received via private conversations in Chatter. Users can access this object if they have the “Manage Chatter Messages” permission. This object is provided to allow administrators to view and delete users' Chatter messages; for example, for compliance purposes.
Messages are hard deleted. They aren’t sent to the Recycle Bin.