that includes the persons DOB. I wonder what would happen if the individual had used the wrong DOB when creating the request. Could (should?) yahoo say 'That doesn't match our records' and require a new request?
There is no connection made between the name/DOB/address combo and the email address. If Yahoo only found records matching the email address, then they'd still have to provide those.
Interesting that NSLs don't get the content or subject line of emails. I was under the impression they could get every last scrap of data from anyone with one of these.