A system and computer-based method are disclosed for use in mining data from communications filtering requests. The system and method accept from a delivery point a filtering request, which includes an identification of a sender from which the delivery point does not wish to accept communications. Data from the filtering request is stored in a database and information from the database is provided to a requester. The system and method may receive a communication, determine from the communication its source and its delivery point, access the database to determine if the determined delivery point wishes to accept communications from the determined source and, if it does, deliver the communication to the delivery point. Otherwise, the system and method discard the communication. In the case of traditional mail, the system and method may determine the source and delivery point from one or more bar codes.