Service of documents sets prescribed physical and electronic modes for delivering corporate communications and member service. Section 20 prescribes that documents may be served on a company or its officers at the registered office by registered post, speed post, courier, leaving at the registered office, or by prescribed electronic or other modes; depositories may serve records of beneficial ownership electronically. For the Registrar and members, service may be by post, registered post, speed post, courier, delivery at office or address, or prescribed electronic modes; members may request a particular mode subject to fees determined by the company. 'Courier' means an entity that delivers and provides proof of delivery.