Kansas Statutes Chapter 60. Procedure, Civil § 60-103. Restricted mail defined

The term “restricted mail” as used in this chapter means mail, sent postage or other delivery fees prepaid, that is endorsed on its face pursuant to applicable postal regulations so that the sender will receive a return receipt notification with the date and address of delivery, and, if the addressee is a natural person, only the addressee or an authorized agent will receive the mail.