Almost all (>95%) of my spam is tagged as BAYES_99 by SA (which is great), but only approx. 60% of my spam is classified as spam by my Thunderbird 2.0.0.12. Thunderbird also uses a a bayesian filtering system. I always learn all of my spam and all of my ham in both systems perhaps once a week, not only FP/FN.

I'm just curious: is there any explanation for this big difference? Why is the SA implementation that much better? One year ago Thunderbird scored much better than nowadays, while SA is still at maximum efficiency.

Tschau
Alex

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