Wisconsin Certification of Mailing Or Third-Party Commercial Delivery (Sample And Forms) is a legally binding document that is used to certify the mailing of documents through the United States Postal Service, or through an approved third-party commercial delivery service. This document serves as a receipt of the mailing or delivery of documents to a specific address. There are two types of Wisconsin Certification of Mailing Or Third-Party Commercial Delivery (Sample And Forms): 1. Wisconsin Certification of Mailing Form — This form is used to certify the mailing of documents through the United States Postal Service. It requires the name and address of the sender, the recipient, the date of mailing, the type of service used, and the mailing or tracking number of the package. 2. Wisconsin Third-Party Commercial Delivery Form — This form is used to certify the delivery of documents through an approved third-party commercial delivery service. It requires the name and address of the sender, the recipient, the date of delivery, the type of service used, and the delivery or tracking number of the package. Both forms provide proof in the event of a dispute that the documents were mailed or delivered on the date indicated.