I may well be dense but I cannot see how this works!

As site Curator I get sent an email informing me that a Contact has been made and telling me what the content of the Contact is.

However, I do not get told the email address that the contactee has given, so I cannot reply?

I am clearly missing something!

I'm not super-familiar with this plugin, but I believe that the user's given email should be the From: address on the notification that you're sent.

Sorry, stupid me, didn't recognise this when I sent the comment to check!