[Spambayes] 'sender' and 'reply-to' tokenising.

[Skip Montanaro]

    Anthony> So now we have things like h/s mean/sdev, we get more useful
    Anthony> data. I tried enabling tokenization of both 'sender' and
    Anthony> 'reply-to' (and both) along with the 'from' line. 

I have a patch locally to generate to and cc tokens on a per-domain basis
(e.g. "To: skip@mojam.com, james@bond.net" would generate "to:@mojam.com"
and "to:@bond.net").  While this might not be useful for the current crop of
users, I think it will be useful for people who have abandoned email
addresses in the past for whatever reason.  *@calendar.com gets nothing but
spam these days, for example, though I don't publicize it any longer (it
still works).  I'm headed out right now but will generate some new results
while I wait for my car to be serviced and get something out later today.

Skip