Kushner used private email for White House officials, confirms lawyer

US President Donald Trump's son-in-law and White House senior advisor Jared Kushner has occasionally used a private email account for correspondence with fellow administration officials, his lawyer confirmed.

"Kushner uses his White House email address to conduct White House business.

"Fewer than a hundred emails from January through August were either sent to or returned by Kushner to colleagues in the White House from his personal email account," counsel Abbe Lowell told CNN on Sunday night.

Politico news had first reported Kushner's use of a private account and said it was set up in December and was used to sometimes trade emails with senior White House officials, outside advisers and some others about media coverage.

Lowell said that the emails on Kushner's private account were "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".

Federal law requires that all White House records be preserved, including emails.

Regarding concerns that some of the emails might not have been preserved since Kushner was not using a White House account, Lowell told CNN: "All non-personal emails were forwarded to his official address, and all have been preserved, in any event."

During his campaign, Trump repeatedly criticised Democratic opponent Hillary Clinton for her use of a private email server to send and receive email during her tenure as Secretary of State.