Service of notice: authorised modes enable deemed service and a presumption of receipt unless contrary proof is shown. Service of notices may be effected by personal delivery to the addressee or authorised representative, registered or speed post or courier with acknowledgement to the last known address, email provided at registration, uploading on the common portal, publication in a local newspaper, or, if impracticable, affixing at the last known place of business or residence or on the concerned officer's notice board. Such communications are deemed served on the date of tender, publication or affixation; communications sent by registered or speed post are deemed received on expiry of the normal transit period unless contrary proof is furnished.