A sample address with the “H” as it appears in an email sent by Clinton. (Credit: public domain)
A September 2016 FBI report will indicate that “some Clinton aides and senior-level State [Department] employees were aware Clinton used a personal email address for State business during her tenure [as secretary of state]. Clinton told the FBI it was common knowledge at State that she had a private email address because it was displayed to anyone with whom she exchanged emails. However, some State employees interviewed by the FBI explained that emails from Clinton only contained the letter ‘H’ in the sender field and did not display her email address.”
The report also notes, “The majority of the State employees interviewed by the FBI who were in email contact with Clinton indicated they had no knowledge of the private server in her Chappaqua residence.”
Even Clinton’s closest aides like her chief of staff Cheryl Mills and deputy chief of staff Huma Abedin will claim they didn’t know, though there is evidence that suggests otherwise (Federal Bureau of Investigation, 9/2/2016)