Those emails she received considered to be official business, her staff forwarded to the State Department for their IT operators to save.
Reports also indicate that there were months long gaps. Throwing that assertion into question.
None of these emails were classified. They appear to have been sent to her unencrypted
Without all of the e-mails, there's no way to verify this statement, but it is probably true. The air-gap between classified and unclassified would probably prevent this, but you'd be amazed at how frequently data spills occur. If there was a data spill, it would probably be the fault of someone sending her an classified e-mail versus her generating one on her unclassified system.
Sensitive material never went through this email system.
This statement is probably completely false. Anything not reviewed and marked for public release is considered sensitive. Note that sensitive is not the same thing as classified.
They only recently were able to figure out how to even just save Secretary Kerry's email; his top staff using the @state.gov address still do not have their email records saved.
But in this case, the responsibility is where it belongs -- on the government and the government employees. By being on Clinton's private server ... who is legally responsible?
This is much akin to the media breathlessly discovering that Hillary Clinton also has a private phone number, which maybe official calls were received. Except that because this is "email", it's totally different somehow.
It is. E-mail is automatically backed up and leaves an electronic trail. At this point, phone calls are not automatically recorded -- although the phone call meta-data would certainly be traced and of value.
(By which I mean, as she's the presumptive Democratic nominee,
I voted for her in 2008. Given her actions and reactions to lots of different things, including the fall that may have caused a concussion, she just doesn't seem to be on the same level as she was 8 years ago. But you're right, any criticism of the presumptive Democratic nominee must only be based on nutjobbery and not legitimate concerns. I, for one, would much prefer that we get this out in the open and properly dealt with before the campaign season begins in earnest. With luck, we'll have a Democratic nominee that is presumptive.