A message greeting system receives a notification that a party is unavailable in response to a communication initiated by a contacting party. In response to receiving the notification, the message greeting system acquires contextual data associated with the contacting party, determines a message greeting that is appropriate for the contacting party based upon the contextual data, acquires the appropriate message greeting, and sends the appropriate message greeting to a contacting party device associated with the contacting party. The appropriate message greeting includes a message greeting that is usable by the contacting party given a context in which the contacting party is involved as identified by the contextual data. In some embodiments, the message greeting system acquires the appropriate message greeting by adapting an inappropriate message greeting for the context in which the contacting party is involved, thereby creating the appropriate message greeting.