How to Display Email Address (not contact name) in closed activities?

Hello,

When reading an e-mail in a contact's closed activities, I would like to see the contact's actual e-mail address, not his contact name.

The contact has two e-mail addresses (primary & secondary), but when I read history i do not know which of the two e-mail address correspondence was sent to or came from.  The only thing that displays is the contact's name.

Is there a way to display actual e-mail addresses?

Thanks,

-Eric