Wherever used in this Code, the following words shall have the meanings respectively ascribed to them unless such meanings are repugnant to the context: 1. The words “certified mail” mean any form of mail service, by whatever name, provided by the United States post office where the post office provides the mailer with a receipt to prove mailing. 2. The words “restricted certified mail” mean any form of certified mail as defined in subsection 1 which carries on the face thereof, in a conspicuous place where it will not be obliterated, the endorsement “Deliver to addressee only” and for which the post office provides the mailer with a return receipt showing the date of delivery, the place of delivery, and person to whom delivered. [C31, 35, §5079-d16; C39, § 5038.06; C46, 50, 54, §321.503; C58, 62, 66, 71, 73, 75, 77, 79, 81, §618.15 ] Referred to in §249F.3 , 305B.3 , 323.2 , 323.3 , 458A.22 , 522B.14 , 562A.8 , 562A.29A , 562B.9 , 562B.10 , 562B.27A , 648.3 , 648.5