SPAMfighter has reached version 4.7.6 . You can read the change log here.
SPAMfighter is a plugin for Outlook and Outlook Express that help to filter spam messages. The filter does most of the job automatically. If the filter misses a spam email you can mark it and this email will be inserted in the global heuristic database of spam mail. SPAMfighter can be used without any restrictions in trial mode for 30 days. After that commercial users need to purchase a license and home users will automatically get free SPAMfighter Standard.
Download Link: SPAMfighter latest version.