Missouri Revised Statutes § 375.266 - Service of process valid, when

375.266. Service of process valid, when. — Service of process in any action, suit or proceeding referred to in section 375.256 shall, in addition to the manner provided in section 375.261, be valid if served upon any person within this state who, in this state on behalf of the insurer, is: (1) Soliciting insurance, or (2) Making, issuing or delivering any contract of insurance, or (3) Collecting or receiving any premium, membership fee, assessment or other consideration for insurance; and if a copy of the summons issued, with a copy of the officer's return thereon, together with a copy of plaintiff's petition thereto attached, are sent within ten days thereafter by certified mail, with return receipt requested, by the plaintiff or plaintiff's attorney to the defendant at the last known principal place of business of the defendant, and the return receipt and the affidavit of plaintiff or plaintiff's attorney showing compliance therewith are filed with the clerk of the court in which the action is pending on or before the date the defendant is required to appear and defend the cause of action. (L. 1951 p. 276 § 375.162, A.L. 1967 p. 516)