Recovery of postage and other sums due in respect of postal articles
67.—(1) Where any postage or other fee or sum is not prepaid or fully prepaid in respect of a postal article posted for delivery in Singapore, a public postal licensee may refuse to deliver the postal article until the postage or other fee or sum has been paid to or recovered by the licensee.
(2) The official mark or label on a postal article denoting that any postage or other fee or sum is due in respect thereof to a public postal licensee or to the postal authority of any foreign country shall be prima facie evidence that the postage or other fee or sum denoted is so due.