Mo. Rev. Stat. § 547.260
If any person shall appeal to the supreme court from a conviction and sentence for a felony in any court in this state having the jurisdiction to try and determine felonies, the clerk thereof shall immediately notify the attorney general of the state of Missouri in writing by mail, giving the name of the appellant, the nature of the crime, the substance of the judgment and sentence, and the date of the order granting the appeal. In those cases wherein the appellant shall have been sentenced to suffer death, the clerk of the court in which the conviction was had shall also immediately give like notice to the chief administrative officer of the correctional facility of the department of corrections by registered mail, unless time requires a more expedient notice. In all cases where a person shall have been sentenced to suffer death in this state and shall file a petition for a writ of error in the supreme court, the clerk of the supreme court shall immediately give like notice to the chief administrative officer of the correctional facility of the department of corrections, of the issuance of the writ, the name of the plaintiff in error and the other facts above specified. The notice shall be conveyed in person by the marshal of the supreme court to the chief administrative officer.
§ 547.260, RSMo