8.—(1) A notice to or other document for any party shall be deemed duly served if it is—
(a)delivered to him personally; or
(b)properly addressed and sent to him by pre-paid post at the address last notified by him for this purpose, or to his ordinary address; or
(c)served in any other manner a Commissioner may direct.
(2) A notice to or other document for a Commissioner shall be delivered or sent to the office.
(3) For the purposes of any time limit, a properly addressed notice or other document sent by pre-paid post, fax or e-mail is effective from the date it is sent.