Email-Fingerprint Email::Fingerprint provides methods for generating checksums for email messages. Depending on the options chosen, the checksum can include the body only or the body and select RFC822 headers. Scripts can use this module to detect duplicate email messages, even if the messages differ in some headers--for example, if they were relayed through different SMTP servers or sent at different times. INSTALLATION To install this module, run the following commands: perl Makefile.PL make make test make install SUPPORT AND DOCUMENTATION After installing, you can find documentation for this module with the perldoc command. perldoc Email::Fingerprint You can also look for information at: Search CPAN http://search.cpan.org/dist/Email-Fingerprint CPAN Request Tracker: http://rt.cpan.org/NoAuth/Bugs.html?Dist=Email-Fingerprint AnnoCPAN, annotated CPAN documentation: http://annocpan.org/dist/Email-Fingerprint CPAN Ratings: http://cpanratings.perl.org/d/Email-Fingerprint ACKNOWLEDGMENT Inspired by, and early versions based on, a script by Russel Nelson available at . COPYRIGHT AND LICENCE Copyright (C) 2007 Len Budney This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.