I am using beta 2 on an N950 and must say that on the whole, I find the email client fast and fun to use. It's a great improvement over the N9's email client, even the Symbian Anna version. I do have one rather puzzling issue when using my IMAP server (running Dovecot) : the email client does not seem to recognize my "INBOX" folder, and so it does not display any emails by default. The best I can do is to add "INBOX" to my favorite folders, but this is annoying since it is not what is displayed by default.