Email messages sent and received in the course of official business are State records under the State Records Act 1998. This includes messages sent and received by Ministers in the course of their official duties. It also includes messages relating to any aspect of official (government) business coming from private email accounts.
Large amounts of corporate information and corporate risk are tied up in email systems. Email therefore needs special treatment by organisations and specific requirements and systems need to be in place to ensure that email can be managed.