Donald Trump’s son-in-law and senior advisor Jared Kushne used a private e-mail account for White House business.

In an ironic development — given Trump’s focus during and after the campaign on Hillary Clinton’s e-mails — Politico has seen and verified about two dozen e-mails, with Kushner writing senior White House officials, outside advisors and others about media coverage, event planning, and other subjects.

Abbe Lowell, Kushner’s lawyer, tried to minimize the story:

Mr. Kushner uses his White House e-mail address to conduct White House business.

Fewer than 100 emails from January through August were either sent to or returned by Mr. Kushner to colleagues in the White House from his personal e-mail account. These usually forwarded news articles or political commentary and most often occurred when someone initiated the exchange by sending an e-mail to his personal rather than his White House address.

Advisors who exchanged e-mails with Kushner on the private account since January include former chief of staff Reince Priebus; former chief strategist Steve Bannon; National Economic Council director Gary Cohn; and spokesman Josh Raffel.

Further questions, given the focus on the Clinton e-mail story to win the White House, are raised by the use of private e-mail accounts by Bannon and Priebus to correspond with Kushner and others. E-mails also indicate other White House officials have sometimes used personal accounts for correspondence, sometimes with encrypted applications like Signal and Confide that automatically delete messages.

There is no indication yet that Kushner shared any sensitive or classified material on his private account. Aides said he prefers to call or text rather than sending e-mail.