Evers added that "while much of the rhetoric surrounding Secretary Clinton's use of personal email was hyperbolic and untethered to the law or facts, the extensive use of personal email by a senior public official raises important questions that merit investigation."
The White House has been bracing for the new revelation to spur a deeper investigation next year by House Democrats of Ivanka Trump's correspondence in her personal, official and business life.
Ivanka Trump first used her personal email to contact Cabinet officials in early 2017, before she joined the White House as an unpaid senior adviser, according to emails obtained by American Oversight and first reported by Newsweek.
When she joined the White House, Trump pledged to comply "with all ethics rules".
But she continued to occasionally use her personal email in her official capacity, according to people familiar with the review.
In a statement yesterday, Peter Mirijanian, a spokesman for Ivanka Trump's lawyer and ethics counsel, Abbe Lowell, said that the first daughter's email use was different than that of Clinton, who had a private email server in the basement of her Chappaqua, New York, home. At one point, an archive of thousands of Clinton's emails was deleted by a computer specialist amid a congressional investigation.
Some former Trump White House officials on criticised Ivanka Trump over the matter.