untrained models can still be useful

For many years now I've been using crm114 -- a statistical classifier -- to filter mail. It's available in Debian but it is not distributed with a pre-trained model: you start from 0 and train it yourself. I have had fantastic results from it for a long time and I hope that continues. I can appreciate that people get value from pre-trained models, I guess Spam Assassin's is shipped pre-trained? But starting without training, for this use-case at least, is not the end of the world IMHO; the crm114 classifier becomes useful very quickly.