there are lots of mail servers that do spam filtering that have an
option to file the suspected spam into a mail folder instead of just
deleting it.
Easily and more generally done using redirect.
The policy I adopted is fileinto will copy to local directory, and redirect
will forward to a mail address for possible list archive style archiving.
Both have their uses. Seems like the most natural mapping to me. Are you
suggesting that this approach is uncommon, unusual or incorrect. I'd be
keen to hear why as I might need to do some urgent coding...
Nigel