The chairman of Hillary Clinton's presidential campaign blasted out an email to supporters over the weekend to reiterate that she regrets using a private email server as secretary of State.

"Since last year, Secretary Clinton has said her use of a personal email server was a mistake. And while there have been ongoing reviews of this matter, the completion of the Inspector General's examination gets us one step closer to resolving this," John Podesta wrote in a memo obtained by Buzzfeed News.

Podesta said Clinton has "taken responsibility for that mistake" and that "if she could go back, she'd do it differently."

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He was responding to a report released last week by the State Department's inspector general that said Clinton didn't comply with email policies as secretary of state when she used her private email server.

Podesta said that the rules were clarified after Clinton left office and that she believed she was following the same practice of other secretaries and senior officials.

Former Secretaries of State John Kerry, Madeleine Albright, Condoleezza Rice and Colin Powell agreed to be interviewed by the Office of the Inspector General for the report, but Clinton and top aides Cheryl Mills, Huma Abedin and Jake Sullivan did not.

"The report confirms Secretary Clinton's email account was well-known by many State Department officials throughout her tenure, and there is no evidence of a breach of her email server," Podesta said.

He then said the campaign is confident voters will take other factors into consideration when evaluating her qualifications for president.

"While we understand the questions about Secretary Clinton's email practices, we are confident that voters will look at the full picture of everything she has done throughout her career. We have faith in the American people," he said.