Is there anyway to access the email addresses you sent a test of a campaign that has already been sent?
For example to hold proof-readers accountable?
We don't keep a full list I'm afraid, but on the testing page you will see the last 5 addresses you have sent tests to. You could potentially setup an "editors" list, and add yourself to it, then you'll receive a copy of each email sent to the editors.
That could work if you only have a couple of people to send to, or if you are on a monthly plan, because it would be basically free that way to send full campaigns to them.