General classes of acts not infringing the privilege with respect to information communication
21.—(1)  The privilege conferred by section 20 shall not be infringed by —
(a)the running by a person solely for his own use or solely for the purposes of his business (but not for providing any telecommunication service to another person) of a telecommunication line system in which all the apparatus comprised therein is situated —
(i)on a single set of premises occupied by him; or
(ii)in a vessel, aircraft or vehicle or in two or more vessels, aircraft or vehicles mechanically coupled together;
(b)in the case of a telecommunication line system of which all or part of the apparatus comprised therein is let on hire by the Corporation, the use of all or part of the apparatus let on hire by the Corporation by the person to whom the apparatus is let on hire, to such extent and in such manner as may be authorised by the Corporation; or
(c)the operation of any telecommunication system —
(i)in the course of their duties by the officers and men of the Singapore Armed Forces, the Singapore Police Force or of any visiting force lawfully present in Singapore; or
(ii)by the Singapore Broadcasting Corporation in the provision of any broadcasting and television services under the Singapore Broadcasting Corporation Act [Cap. 297].
(2)  The privilege conferred by section 20 in respect of post shall not be infringed by —
(a)letters or postcards or both not exceeding 3 in number sent by a person for delivery by the person to another without hire, reward or other profit for receiving, carrying or delivering them;
(b)any letter or postcard solely concerning the affairs of the sender or receiver thereof, sent by a messenger employed for that purpose; or
(c)any letter or postcard solely concerning any goods or other property which is to be delivered with the letter or postcard, without hire, reward or other profit for receiving, carrying or delivering the letter or postcard, if the letter or postcard is open to inspection and has thereon the words “Consignee’s letter” or other words to the same effect.
(3)  The following persons shall not collect, carry, tender or deliver any letter or postcard or receive any letter or postcard for the purpose of carrying or delivering it, whether or not for hire, reward or other profit:
(a)a common carrier of passengers or goods and his drivers, servants or agents except as regards letters or postcards solely concerning goods in his vehicles or conveyances; and
(b)owners or masters of vessels or aircraft passing to or from any port or place within Singapore from or to any port or place and their servants or agents, except as regards letters or postcards solely concerning goods on board, the letters or postcards being open to inspection and having the words “Consignee’s letter” or other words to the same effect superscribed thereon, and except letters or postcards tendered to a master of a vessel or aircraft by any employee or agent of the Corporation for conveyance.