First off, love the the email server and webclient. However, I do have a suggestion, that I am guessing has already been recommended before, but I couldn't find it in the forums.
I would love for a little notifier program that you can use to notify people who use the webclient, but aren't logged in, that new email is in your inbox. Much like Google's gmail notifier, this would be a simple program that would run on your system and popup that new email has arrived. Of course all other client programs do this anyways, so if your using Outlook or Thunderbird, you get this feature automatically, but for people who use the web client, it would be great to know you have new email when you don't have the actual webclient up on your screen.
Any thoughts?
-- K