I think the right way to do this sort of thing is to notice that the Subject:
line contains certain text, like "party" or "phone", rather than introducing a
new header field.
> (from montalvo) & ((to faces@Aus.Sun.COM) | (cc faces@Aus.Sun.COM))
> => question
I like that; especially if "from", "to", etc are the names of arbitrary header
fields, and the other strings are regular expressions (instead of straight
string-matches.)
-- Jamie