When President Barack Obama told an interviewer that he first learned of Mrs Clinton's private email server at the "same time everybody else learned it, through news reports", the Clinton campaign emailed each other to say that the president was not telling the truth.
The evening after the interview aired Clinton spokesman Josh Schwerin emailed to say "it looks like POTUS just said he found out HRC was using her personal email when he saw it in the news".
"We need to clean this up", Clinton's former chief of staff Cheryl Mills responds.
"He has emails from her - they do not say state.gov", she wrote, implying that Mr Obama was aware that Clinton was using a private email server rather than her State Department-issued email account.
White House spokesman Josh Earnest later clarified to say that the president had exchanged emails with Clinton but that he "was not aware of the details of how that email address and that server had been set up".