I don't think there is a answer to this I already done some searching.
The closest thing your going to get is SMS unread Count.
http://www.androlib.com/android.appl...idget-BFq.aspx
It works quite well, It does things like SMS,missed calls, and gmail however it will not do your email inbox. Your only option for your email is to just use the old taskbar ..
Someday I will give a shot at trying to make one for the email.