Clinton confidant Sid Blumenthal sends an email to Clinton and Clinton’s chief of staff Cheryl Mills that is almost entirely later redacted. The subject heading is redacted, and the entire text of the two-page email is redacted except for two words: “Confidential,” and “From.”
However, the spacing of redacted lines indicates the name after the word “From” is redacted due to a code indicating that person secretly works for the DIA (Defense Intelligence Agency), NRO (National Reconnaissance Office), or NGA (National Geospatial-Intelligence Agency). The rest of the text is redacted due to that same code and a code regarding the violation of personal privacy.
Mills then replies to Blumenthal and Clinton, “Is it true that [redacted] would be nominated for Amb [Ambassador]? First I’ve heard about it is this email.” Clinton, Mills, and Blumenthal then send more brief emails to each other relating to a possible ambassador nomination for this person. (US Department of State, 2/26/2016) (US Department of State, 2/29/2016) (US Department of State, 2/29/2016)