I just tought about one option, which I think could be great to have in the spam filter parameters. But I don't know if it's possible to configure with spamassassion, but I suppose it is.
Actually, we can reject or accept an email based on the spam score.
But if the spam score is too low, there could be a risk of loosing important emails if spams are rejected, and if the scrore is too high, there could me too much spam email accepted.
What I have thought is to have 2 levels of configuration.
If the spam score is between 6 and 10, emails are accepted but marked as spam in the subject as usual.
And if the spam score is above 10, emails are directly rejected.
What do you think about it ?