Wyo. Stat. § 27-3-517
Whenever this article requires any determination, decision or notice to be transmitted through the mail, the determination, decision or notice may be transmitted by an internet application approved by the department but only upon an election by the claimant or employer to receive the information by electronic transmission. Upon the completion of every electronic transmission authorized by this section, the department shall provide to the claimant or employer an electronic acknowledgement specifying the date and time when the transmission was sent or received. Except as otherwise required by rules applicable to appeals to the courts of this state, determinations, decisions or notices transmitted by an approved electronic means may be appealed or protested by use of the same means. For the purpose of all relevant time limits established by this article, electronically transmitted information shall be deemed delivered on the date indicated on the acknowledgment required by this section, or if no acknowledgement exists, on the date the electronic delivery is initiated by the party sending the information.
W.S. 27-3-517