What is another word for "crier"?

Roget's Thesaurus (1911) lists these synonyms for "crier": ambassador, apparitor, bag, bearer, bellman, boy, cable, carrier, chore, commissionaire, correspondent, courier, dak, delivery, diplomatist, electronic, emissary, envoy, errand, estafette, express, flag, gentleman, herald, information, informer, internuncio, legate, letter, mail, marshal, messenger, news, newsboy, nuncio, office, overnight, own, penny-a-liner, person.