W. Va. Code § 56-3-8
Proof that any process or order was put into the post office in an envelope or cover properly addressed to any officer, and that the postage thereon was paid, shall be prima facie evidence of the receipt thereof in due course of mail by the officer to whom it was so addressed; and this evidence may be furnished by the receipt taken at the time the process or order was put into the post office, from the postmaster, his deputy or clerk, and the certificate of a justice of the acknowledgment of the receipt before him. But such evidence may be rebutted by the oath of the officer to whom such process or order was so addressed, that he did not himself receive the same, and believes that it was not received by any of his deputies.
W. Va. Code § 56-3-8