emissary
n.a person who is sent to represent a group or country in a formal meeting. You use this word when someone is acting as a messenger for a larger organization.
n.a person sent to represent a group, country, or organization in a formal or diplomatic capacity. Often used in the context of international relations or corporate negotiations.
“The ambassador acted as an emissary between the two nations.”
“The CEO sent a senior executive as an emissary to discuss the merger with the rival company.”
“Historians often debate whether the diplomat was truly an emissary of peace or merely a pawn in a larger political game designed to delay the inevitable conflict.”
From French émissaire, from Latin emissarius (“agent, scout, spy”).
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.