Any medium, means, or agency
An unofficial representative:
An agent is defined as someone or something that makes something happen.
An elected or appointed representative of a US territory in the House of Representatives who is entitled to speak but not vote.
A representative of a government who conducts relations with the governments of other nations; person whose career or profession is diplomacy
An assistant exercising full authority in the absence of his or her superior and equal authority in emergencies:
A military or official courier.
A member of a legislative assembly
Find another word for emissary. In this page you can discover 11 synonyms, antonyms, idiomatic expressions, and related words for emissary, like: intermediary, ambassador, consul, envoy, agent, delegate, diplomat, deputy, legate, messenger and representative.