"When I was in Seattle last week, Gus and I discussed email clients with him over beers. We also tried to talk him out of actually developing a mail client. Don't get me wrong, I'm sure Brent could do a fantastic job - I just think it's a terrible market. Thankfully, Brent knows this."
Just for the record- I was trying to talk Brent into doing it. As a non-paid intern working for me, and giving it either away for free or selling it for $500 dollars a copy (Brent's idea).
I don't think he really bought into that though...