The Musketeermail archives are now searchable from the BAC website. Look to the left side of the page for the Musketeermail Archive link. You can search by message title or message body. Currently the archive holds about 16,000 of the ~23,000 messages through May of 2004. More will be added to the archive soon.
Don’t forget too that every page of the BAC website has a search box on it where you can search the entire BAC website. Try out both searches, you might be surprised how much content we have!