A method and system for creating bulk filters are described. In one embodiment, the method includes receiving probe email messages indicative of spam, grouping similar probe email messages, and creating a bulk filter for each group having at least a predefined number of probe email messages without human...http://www.google.es/patents/US8135778?utm_source=gb-gplus-sharePatente US8135778 - Method and apparatus for certifying mass emailings
Method and apparatus for certifying mass emailings