Arizona Evidence of Service by Registered or Certified Mail is the process of proving to a court that a legal document was delivered to a party in a timely manner. There are two types of Arizona Evidence of Service by Registered or Certified Mail: domestic and international. Domestic service is when a document is sent to someone in the United States, while international service is when a document is sent to someone outside the United States. When using this method of service, the sender must provide proof of mailing via the United States Postal Service. To do this, they must use either Registered or Certified Mail. Registered Mail requires the sender to receive a signature of receipt, while Certified Mail requires the sender to receive an additional receipt that includes a tracking number. Once the document is properly mailed, the sender must complete a form known as the Arizona Evidence of Service by Registered or Certified Mail Affidavit, which must be filed with the court. This form contains information such as the date and time the document was mailed, the sender's information, and the recipient's information. Once the form is filed, the sender must provide the court with proof of the mailing, such as the receipt from the USPS or the signature of receipt from the recipient. By providing this evidence to the court, the sender can prove that the document was delivered and that the other party was served properly.