Statistics Sawmill – commercial (need licenses), many formats AWStats – open source Pflogsum – open source Graphing If you need to graph your mail server performance in real time you might try to use one of the graphing scripts. All of them use
Resources How do I send an email with Perl (including an attachment)? How to send email attachments using Perl / MIME::Lite Perl script to save an email attachment to disk Howto extract e-mail MIME attachments using Perl and uudecode
Resources Opinion: Is It Time to Replace SMTP?