It’s a shame when US officials can deliberately send classified information to someone not entitled to see it and then try and delete the record of it, and there is still nothing to be done about it. See it for yourself.
This is from Wikileaks. “H” is Hillary. Diane Reynolds is the secret email name of Chelsea Clinton.
The whole email has been redacted and coded as “foreign government information” and “foreign relations or foreign activities of the United States, including confidential sources.”