Much of [HRC] emails could be declassed without endangering sources & methods.
Legit SAPs & Top Secret Intel could remain classified.
The illegal & evil stuff could be declassed.
Letting the fact be officially known that she had a private server set up to be an electronic [Drop Box] for selling US Classified Intel to China & the highest bidders doesn't give away any sensitive state secrets.
Hell everybody I know already just assumes that's what she did.
And everybody I know thinks it's a bunch of BS that she says she did it "ignorantly".