Hardware Key to Close an Email Message

[abodamer]

I apologize if the secret has been revealed somewhere (I searched the forum)...
Is they any hard key below the display that lets me close an open email message & return to the email list (eg: my inbox)? Hitting the "End Call" button takes me back to the Touch Flow mail view, which then requires me to click on my "Inbox" soft key to view my imbox messages.
Just trying to avoid having to close out an open email message by tapping on the soft "OK" botton in the upper right of the window.