Full legislation
s.20
Service
All notices, summonses, and other documents other than those of which personal service is required, may be sent by prepaid post letter to the last known address of the person to be served therewith; and the notice, summons, or document shall be considered as served at the time that the same ought to be delivered in the due course of post by the post office, and notwithstanding the same may be returned by the post office.