The Bottom Line
Herbivore is no longer available.
- Herbivore is simple and easy to use
- Supports POP, IMAP and Hotmail accounts
- Detected spam can be browsed and restored easily
- Herbivore produces one or the other false positive
- Can't keep mail on the server
Description
- Herbivore is a spam filtering tool for multiple POP, IMAP and Hotmail accounts.
- Distills each incoming message to a core and computes a signature of that core.
- Herbivore servers collect the number of occurrences of each signature.
- If a signature appears several times, it is considered spam and put into quarantine.
- Quarantined mail can be read and approved inside Herbivore.
- Includes a friends list and automatically suggests frequently approved senders for that list.
- Herbivore supports Java 1.3 or later on Windows, Mac OS X, Linux and others.
Guide Review - Herbivore - Spam Filter
If a core appears several times, it can be considered bulk, and spam. Without a lot of refinement, this system seems prone to errors, and indeed Herbivore lets through some spam and, worse, produces quite a number of false positives. Fortunately, these are easy to correct, and Herbivore suggests adding known senders to a friends list.
Herbivore supports POP, IMAP and Hotmail accounts.


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