Of those, six were redacted almost completely when the State Department released them in January. There are, to be sure, other emails that do not fall into the category of “foreign government information,” and some raise questions about the sort of information senior officials sent in unclassified emails. “In most cases, the determinations are correct, but in some situations, another agency may consider certain information classified that the author does not.” Thus, the only way the State Department could withhold “foreign government information” in the emails being released under court order was to classify it, according to the letter. At the State Department, the Pentagon and the White House, among other agencies, officials have two systems for email, one for classified messages and one for more routine business.

Source: New York Times May 10, 2016 19:17 UTC