Elena Kagan's White House Emails
elenasinbox.com
elenasinbox.com
The clever bit: putting it in a webmail interface rather than making people scroll through a 1000 page pdf and double check every header.
I think read receipts fall into the category of "good faith effort", and not much more.
And if they were going to stop using email, what would replace it? Personally, I can't see these busy individuals doing all business over the phone. Blackberries are also covered by federal law.