Service of process upon a corporation, whether domestic or foreign, may be made by
In all cases in which an insurer is a defendant, service shall not be made by leaving a summons and a copy of the complaint with a resident agent; and in cases in which a defendant is a foreign insurer, 2 summonses and a copy of the complaint shall be delivered to or mailed to the office of the commissioner of insurance by registered mail.
MCL 600.1920