Arizona Affidavit of Service by Certified Mail and Supporting Circumstances is a legal document that is used to prove that a notice or other document has been delivered to another party. This document provides proof of service when the document is served through the United States Postal Service. The form includes the name of the person served, the address of the person served, the date of service, the document that was served, and the method of service. The form must be completed, signed, and notarized by the party attesting to the service. There are two types of Arizona Affidavit of Service by Certified Mail and Supporting Circumstances: Affidavit of Service by Certified Mail and Affidavit of Service by Certified Mail with Supporting Circumstances. The Affidavit of Service by Certified Mail is used when the document was served through the United States Postal Service. The Affidavit of Service by Certified Mail with Supporting Circumstances is used when the document was served in person or through an alternate delivery method. In either case, the form must be completed, signed, and notarized by the party attesting to the service.