conveys any letter or postcard or performs any service incidental to such conveyance without a licence granted under section 42;
(b)
collects, sends, tenders or delivers in order to be sent a letter or postcard without a licence granted under section 42;
(c)
makes a collection of letters or postcards for transmission or distribution to or from any place through a public postal licensee without a licence granted under section 42; or
(d)
collects, conveys, tenders, delivers or receives any letter or postcard in contravention of section 41(2),