(1) If the whereabouts of a party or of a person authorised to receive written communications are unknown, then unless otherwise agreed by the parties, such communications are considered to have been received on the day on which they could have been received at the addressee’s last known postal address, place of business or last known place of abode if mailed properly by registered letter with return receipt requested, or by any other means providing proof of delivery.
(2) Subsection (1) is not to be applied to communications in court proceedings.