Owl550 is a free anti spam for all platforms which support Java 1.4.
With Owl550 you can:
– Choose a formula to return at spammer.
– Modify time between two reads.
– Choose a sound for alert.
– Remember friends and undesirable.
– Pre-define undesirables.
– See the content of emails.
Owl550 runs on Windows and Linux.
Download: Owl550 1.12