SpamFree - Free you from spams
SpamFree Downloads and Forums
SpamFree Release Notes
SpamFree User Manual
SpamFree Customization Manual
Why SpamFree -- Any good client-side spam killer?
How to kill spams with procmail
How to make use your existing procmail scripts with SpamFree
Alternative Solutions: Unix Client Side Spam Filters
Supplementary Readings: fetchmail, procmail, and spamassassin
Supplementary Readings: My Notes on Procmail