US First Lady Melania Trump has used her personal email to discuss official White House affairs, CNN reported, citing former senior adviser to the president's wife, Stephanie Winston Wolkoff.

The first lady is not a civil servant, laws that oblige administration employees to use government accounts do not apply to her, the article notes.

At the same time, data on Melania Trump's use of personal e-mail appeared immediately after her husband, US President Donald Trump, criticized his ex-rival for the presidency, Hillary Clinton, for using a personal mail server while working as secretary of state.