S.L. 254.1 · Postal Services (General) Regulations (S.L. 254.1)
S.L. 254.1 Art. 54Unpaid or underpaid postage for incoming and outgoing postal articles
(1) This regulation applies to incoming and outgoing postal articles.
(2) All outgoing postal articles, other than registered postal articles, upon which no part, or a part only, of the postage payable thereon has been pre-paid, shall be dealt with as follows:
(a) where the address of the sender is shown on the outer cover, the postal article shall be returned to sender appropriately endorsed for the payment of the deficient postage,
(b) where an outgoing postal article cannot be returned to the sender for the full payment of postage, it may be charged with up to double the amount of the deficient postage and shall be delivered to the addressee who shall be liable to pay the said charge upon acceptance of the postal article.
(3) An incoming postal article, including a registered postal article, upon which no part, or a part only, of the postage payable thereon has been paid, shall be delivered to the addressee and charged with such amount as the foreign postal operator concerned shall have requested to be collected.
(4) Any amount charged under subregulation (2)(a) and under subregulation (3) shall be paid by the sender or the addressee, as the case may be, and the universal service provider may withhold transmission or delivery until such amount is paid.