The stupid thing about this excuse (and it says a lot about the DUmmies that support her) is, who wants a president who's so incompetent that they can't tell a classified from an unclassified email, marked or not? Every employee, including her, goes through in depth training that teaches them to recognize what's classified and what's not. When it comes to the State Department, DOD, Homeland Security, it's best to assume ALL email between foreign and domestic parties which are not discussing yoga positions or weddings, is classified.
Heck, I'm just the mom of a Marine and I'm careful about what I email, text & facebook message or even talk on the phone with him. Even though I'm a civilian, I've had OPSEC drilled into me so many times, I can recite it in my sleep. I've never had any formal training beyond the 2 hour class given to family members and constant. unending reminders from the Family Readiness Officer. I'm not even talking classified but there are certain topics we're told to consider off limits in any form that could be compromised. I figure that's pretty much the same as understanding what's classified and what's not, except the Secretary of State will deal with more classified information than most departments with the exception of intelligence communities.
So, either she's too incompetent and stupid to be president or she's so unconcerned and careless that she doesn't deserve to be president. Considering a couple of the main reasons she had a private server was to get advice from people without clearance and share information with her cronies for business deals and such, I'd say it's the latter despite her obvious stupidity. She won't be president so those of you who support her better latch on to someone else.
Cindie