Ivanka Trump, daughter and adviser to US President Donald Trump, has come under fire for using her personal email to communicate with White House aides and cabinet officials.
According to the Washington Post, some of the emails violate the federal records rules.
Trump used her personal account to discuss government policies and official business.
Politicians have frequently used emails as a back door for their controversial dealings. Here are just some examples.
1. Hillary Clinton
In 2015, the former US Secretary of State found herself in hot water after she was asked to hand over work-related emails from her personal account. The emails were used in an investigation into the 2012 attacks in Benghazi, Libya.