Re: Clinton who should be in jail.
Your second sentence
"If you know any classified information it is your personal responsibility to protect the information."
Is true, thus it is the responsibility of the SENDER of the email to only send it to secured mail servers, over a secured network, and using encryption at the time.
Unfortunately, the State Department HAD no "secure" mail servers, no secure network, no encryption (to my knowledge).
The State Department had been penetrated for quite some time, and from what I remember, it was reported that IT department couldn't be sure when they could actually HAVE secured mail servers (happens when you use an operating system known for its lack of security).
And as it turns out, it appears that Clintons mail server was more secure.