A method for managing a message communication system comprising providing a token log as a data structure that contains a user-extensible set of tokens and implied conditions under which specific tokens are considered valid. The method also includes creating a new token as a set of symbols and storing the new token in the token log together with information that implies one or more conditions under which the token is considered valid, which validity information implies one or more specific actions to be performed when a message accompanied by the new token experiences an event. The method further includes providing for distributing the new token to one or more external entities and providing a system operator with the ability to change a validity status of the token.