Shipping costs are managed in a process wherein a plurality of entities who possess articles ship the articles via a mail system to a plurality of entities who receive the articles. A database is maintained of articles and article attributes. For each shipped article, the shipment control entity receives...http://www.google.de/patents/US20080126218?utm_source=gb-gplus-sharePatent US20080126218 - SYSTEM AND METHOD FOR PROVIDING SHIPPING SERVICES