nothing. in fact, when I hear that Cooper's emails are part of the evidence, it makes me wonder. email directly from Rove, I can't imagine Rove would do that. so it must be an email from Cooper to someone else with claims about Rove. that's evidence now? its all here-say, Cooper can send anyone an email that says "Rove told me ABC...". Of course, the media will use these as facts. I can just see emails from Cooper to his wife Mandy about Rove being used as "facts" in this by the NYT.
There were more than just emails turned over. Cooper's notes would have Rove's name. I doubt there is email correspondence between them.