Iowa Code § 602.8102A

Notwithstanding any other provision of the Code to the contrary, and subject to rules prescribed by the supreme court, if the clerk of the district court sends a mailing or notice to a person or party and the mailing or notice is returned by the postal service to the clerk of the district court as undeliverable, the clerk is not required to send a repeat or subsequent mailing or notice unless the clerk receives an updated mailing address.