It seems it may be useful to have some kind of resource in
MHonArc that allows manipulation of addresses in the HTML
domain (say ADDRESSCONVERTER).
=v= Since, like I say, spammers have made me give up on mailto:
altogether, I've thought about replacing various addresses with
entirely different types of URLs that might be of some value.
=v= For example, some of my archives contain things sent to
various email lists (I archive a selection of them all together
in one place, according to topic), so they're going to have
"To: somelist(_at_)yahoogroups(_dot_)com" and "To:
in their headers. So it seems reasonable to me that instead
of providing "mailto:" URLs, which are meaningless to those
who aren't subscribed, the URLS should instead be things along
the lines of "http://groups.yahoo.com/group/somelist" and
=v= I've fiddled with this using brute force post-processing,
though of course a header-aware resource would make more sense.