There are three forms of notification: Service of process, voluntary appearance, and publication. Service of process means providing the other party notice through certified mail or delivery by a sheriff. Voluntary Appearance is authorization signed by the defendant allowing the court to proceed with the case. If you do not know where your spouse is, the court may allow you to notify your spouse by publication. This means that you may, pursuant to a court order, publish a notice in the newspaper stating that you are bringing a divorce action against your spouse.