I don’t think that any developer is going to pour much in the way of resources into an email client, so The Bat and Pocomail will go the way of Eudora.
-J-Mac
So too Mulberry, alas. I've used it for more than a decade, and I still love it, but it hasn't had any noticeable development in about five or six years, and it certainly needs some. But every time I try a different email client, I'm reminded why I stay with Mulberry.