Email correspondence to or from public officials is usually considered to be public record with certain exceptions allowed by statute. I'm not sure of Alaskan law but for instance in Florida, sensitive security information and risk assessments/vulnerability info, sealed bid proposals, economic development information, information regarding personal info for public workers and their families with hire/fire authority, law enforcement and firefighters is protected. For instance, an email from an HR Director to his wife telling her to pick the kids up at a specific daycare would be protected.

I think you'd have to examine the public records laws in Alaska to determine the answer to your question.