U.S. President Donald Trump's son-in-law and senior White House adviser, Jared Kushner, has used a personal email account to discuss official administration business.
Kushner's lawyer, Abbe Lowell, said in a statement Sunday that Kushner received or replied to fewer than 100 messages using that account between January and August.
"These usually forwarded news articles or political commentary and most often occurred when someone initiated the exchange by sending an email to his personal rather than his White House address," Lowell said. "All non-personal emails were forwarded to his official address and all have been preserved in any event."
Under U.S. law, correspondence and other documents created or received by the president, the president's staff or anyone whose job is to advise or assist the president must be saved.
Trump has been sharply critical of Hillary Clinton, his opponent in last year's presidential race, for her use of a private email system for official business when she served as secretary of state.