It still seems to me that it would be extremely simple to post the e-mail in question, or at least forward it to him so that we could all happily move on from the topic.
It wouldn't matter. We've been down this road before. It would get posted, he'd cry about how it was a forgery instead. When that gets disproven, he'd say it was all some kind of massive conspiracy to ruin his reputation. So it's best just to not bother playing the game at all, since clearly he was more interested in trying to drag up a 4 year old licensing dispute we covered awhile back on TMC after he accused Drizzt/Fizban of being a software pirate.