39 55 Undeliverable postal articles (1) The following provisions shall apply to any postal article which a postal licensee is unable to deliver or return to the sender after using his best efforts⎯ (a) the postal licensee shall have the right to open and examine the postal article for the purpose of determining from its contents the identity and address of the addressee or sender; (b) the opening and examination of any postal article in terms of paragraph (a) shall be done by an employee of the postal licensee authorised in writing generally or specifically for the purpose by the postal licensee; (c) if, after an examination in terms of paragraph (a), the postal licensee⎯ (i) determines the identity and address of the addressee or the sender, he shall reseal the postal article and enclose or append a written explanation of the reasons and the authority for opening it; or (ii) fails to determine the identity and address of the addressee or the sender, he shall hold the postal article for six months after the date of the examination and, on being satisfied at any time within that period that any person enquiring for it is entitled to the postal article, deliver it to that person; (d) if no delivery of the postal article is made in terms of subparagraph (ii) of paragraph (c), the postal licensee may⎯ (i) destroy the postal article or any of its contents; or (ii) sell any of the contents of the postal article and credit the proceeds to his income; (e) if the postal article is disposed of in terms of paragraph (d), the postal licensee shall make a record of the disposal and store such record together with other such records in a manner prescribed, or approved by the Authority, for a period of not less than twelve months from the date of the disposal, and the postal licensee shall make such record available for inspection by the Authority at its request. (2) No liability shall attach to a postal licensee in respect of any postal article dealt with in terms of subsection (1). 56 Restriction on opening of postal articles Except as otherwise provided by or in terms of this Act or any other law, after a postal article has been delivered to a postal licensee, no person shall open that article. 57 Detention and examination of postal articles (1) Subject to this section, if there are reasonable grounds to suspect that a postal article in the custody of a postal licensee— (a) contains anything in respect of which an offence or attempted offence is being committed; or (b) contains anything that will afford evidence of the commission of an offence; or (c) is being sent in contravention of this Act or in order to further the commission of an offence;