Michigan Compiled Laws, Chapter 18. Department of Management and Budget § 18.1277

(a) The mailing is required by law.

(b) The mailing is paid for by the person to whom the mailing is addressed.

(c) The mailing is a direct response to a specific question of the person to whom the mailing is addressed.

(d) The mailing is specifically authorized by a majority vote of a state board or commission.

(e) The mailing is sent to an individual or entity and seeks information necessary for a state board or commission to render a decision. This subdivision does not include a questionnaire or general letter which attempts to assist in the taking of a survey.