Iowa Code § 633.287: Manner of deposit.

Every such will shall be enclosed in a sealed wrapper. The clerk shall indorse thereon the name of the testator, the name of the depositor, the date of deposit, and, if provided, the name of the person to be notified of the deposit of such will upon the death of the testator. The clerk shall hold such will until disposed of as provided in section 633.288 or 633.289.