It's still on our old site:
http://sdm.openacs.org/faq/one?scope=public&faq_id=23I should probably point out, though, that the webmail package has been deemed unworthy of being ported by several OpenACS hackers, at least in part due to its dependency on Java and the desire to keep the number of programming languages involved to a minimum.
OTOH, I think it would rock to integrate *some* kind of webmail solution with OpenACS.
Just my $ .02