20. The electronic message filter of claim 19, wherein the filter initialization module comprises storage means for storing execution parameters for the message analysis module.
19. An electronic message filter, comprising: a filter initialization module; a message analysis module, wherein the message analysis module includes: decomposition means for decomposing electronic messages into a set of components according to a predetermined component size; and pattern recognition means for determining if the set of components has characteristics expected in an electronic message which is predominately natural language text, wherein the pattern recognition means determines an observed phi of the electronic message and compares the observed phi to a plain-text phi of the electronic message to determine if the electronic message includes data in the particular format, wherein the plain-text phi is determined as a function of the predetermined component size; and a clean-up module; wherein the message analysis module determines if the electronic messages should be passed based on whether the electronic messages are predominately natural language text.