GyazMail for MacOS X

I just found out about this new MacOS X mail client. This will be something I need to look at: Mail.App is way too slooooow, Entourage (only available with Office v. X) is far too expensive, and PowerMail doesn’t use the MacOS address book. Ginko doesn’t look bad, either, but I like three pane views. Come on, Guido… :)