Inviolability of mails and immunity of staff from prosecution.
66.—(1) Postal packets and mail bags in course of post shall be immune from examination, detention or seizure except as provided under this Act or any other enactment.
(2) The company and members of the staff and other persons engaged on the business of the company shall be immune from prosecution for the possession, carrying or delivery of any prohibited article contained in a packet in the post.