The Apache Mailet API is a flexible specification for mail processing agents. The Apache Mailet API is a flexible specification for mail processing agents. 2007-01-01 Alan D. Cabrera Bernd Fondermann Danny Angus Noel J. Bergman Norman Maurer Robert Burrell Donkin Serge Knystautas Soren Hilmer Stefano Bagnara Steve Brewin Vincenzo Gianferrari Pini Joe Cheng Niklas Therning Rob Oxspring Roger Fullerton