One of the emails Hillary deleted was one that showed that Hillary not only sent classified material from her computer but that she sent it to Chelsea who has never held a security clearance.  The material is so classified that the actual body of the email is totally redacted.

From The Daily Caller:

The Dec. 20, 2009 email chain, entitled “Update,” started with a message from Michael Froman, who served as a deputy assistant to President Obama and deputy national security adviser for international economic affairs.

The email, which is redacted because it contains information classified as “Confidential,” was sent to Jake Sullivan, Clinton’s foreign policy adivser at the State Department, and several Obama aides. Sullivan sent it to Hillary Clinton who then forwarded it to Chelsea, who emailed under the pseudonym “Diane Reynolds.”

But perhaps the most significant part of the email is that Clinton forwarded classified information to her daughter, who is and was a private citizen with no government role and no apparent security clearances.

It is unclear when or why Clinton deleted the email. She gave the State Department around 30,000 emails she claimed were related to her State Department work. She deleted a similar number claiming they were personal and dealt with yoga routines, food recipes and Chelsea’s wedding.

FBI director James Comey said in July that investigators recovered several thousand work-related emails from Clinton’s server. The batch of emails released Friday are from that recovered trove