Email can also be managed from within Yoono !

Yoono is made of widgets, actually. While only the "Friends" and "Discover" are installed by default, other widgets are available, and one that is great is the "Email" widget.
It will give you access to Gmail, LiveMail and YahooMail.
Not only to read your emails, but to write, reply, etc...
It will also warn you when you get new messages.