Hawaii Statement of Mailing; Exhibits "1" & "2" are documents used to provide proof of mailing in the state of Hawaii. Exhibit 1 is the Hawaii Statement of Mailing, which includes the name and address of the sender, the number of copies sent, the date sent, and the name and address of the recipient. Exhibit 2 is the Certified Mail Receipt issued by the U.S. Postal Service, which includes the name and address of the recipient, the date sent, and the tracking number. These documents must be completed and signed by the sender in order to provide proof of mailing.