Appearing on CBS’s Face the Nation, USA Today Washington bureau chief Susan Page said that a newly discovered email shows that Hillary Clinton wasn’t being truthful about why she wanted a private email server.

Face the Nation host John Dickerson quizzed Page about the email in question:

Dickerson: Didn’t turn over an email that showed there were problems with her server. That’s not good. Page: An important disclosure for two reasons. She gave a different explanation for why she had a private email server. She was concerned about the personal being accessible. It wasn’t a matter of convenience, which is what she told the world. Secondly, she didn’t turn it over. She deleted this email apparently, and it came up because it came through the aide that she had sent it to, so it goes right to those questions about honesty, trustworthiness, transparency. Dickerson: And that email was about the problems that having a home-brewed server would cause.

The email in question was an exchange between Clinton and her Deputy Chief of Staff Huma Abedin on November 13, 2010. Abedin had suggested that Clinton should consider getting a state.gov email address since the emails from her private clintonemail.com server were being blocked by the State Department’s spam filter.

Clinton rejected that suggestion out of hand:

“Let’s get separate address or device but I don’t want any risk of the personal being accessible.”

Clinton campaign spokesman Brian Fallon tried to explain away the discovery of this email by saying that she provided “all potentially work-related emails” that were still in her possession when the State Department requested them in 2014.

“Secretary Clinton had some emails with Huma that Huma did not have, and Huma had some emails with Secretary Clinton that Secretary Clinton did not have,” Fallon said.

It’s not just Republicans who don’t trust Hillary—but also a large swath of Democrats and Independents who have a hard time believing what she says—which could prove costly in November.