The Oklahoma Affidavit of Notice by Mailing is a document used in Oklahoma to provide proof that a notice or document was mailed to a party. This document is typically used in legal proceedings, such as in court cases or in cases involving real estate or other property. The affidavit is signed by the person sending the notice and attests to the fact that the notice was sent by mail to the other party in the proceedings. There are three types of Oklahoma Affidavit of Notice by Mailing: the Affidavit of Notice by First Class Mail, the Affidavit of Notice by Certified Mail, and the Affidavit of Notice by Registered Mail. All affidavits must include the date of mailing, the name and address of the person being served, the name and address of the sender, the contents of the mailing, and a statement that the mailing was sent by the method indicated on the affidavit.