A flexible, event driven and conditional rule based mail messaging system which can be transparently implemented for use in electronic mail applications. A rule mechanism is implemented having a "When-If-Then" event-driven, conditional, action-invoking paradigm or "triplet" which permits definition of...http://www.google.de/patents/US5283856?utm_source=gb-gplus-sharePatent US5283856 - Event-driven rule-based messaging system
