Donald Trump has repeatedly criticised Hillary Clinton for using a private email server

Donald Trump's daughter and senior advisor Ivanka Trump used a personal email account to send hundreds of mails to her assistants, according to US media reports.

The Washington Post, quoting anonymous sources, said the discovery was made during a review of emails by White House Officials.

Using a personal email address for government business is in violation of federal records rules.

A spokesperson for Mrs Trump's attorney insisted none of the emails contained classified information.

Donald Trump has repeatedly criticised Hillary Clinton for using a private email server, with the attacks continuing after the 2016 presidential election.