326. Service of notice, etc. how to be effected on any person otherwise than as owner or occupier of premises.

(a) by delivering at some post office the said notice, bill, schedule, summons or other such documents under cover bearing the address of the person concerned and obtaining therefor a certificate of posting, or
(b) by giving or tendering to such person the said notice, bill, schedule, summons or other such documents, or
(c) by both methods.