Her having classified info...and sending classified info...is fine. It was part of her job.
The problem was, if that information was stored/sent from a non-secure system, that is a problem. That goes back to protecting the integrity of secure information. Just a few weeks ago, we had a midshipman prosecuted and sentenced to a year in jail for taking a selfie at work, to send to his daughter (young, 6 or 7). He was standing in the engine room....secured information zone. There was no machinery behind him...just a wall with a sign that said "wear your ear protection". However he was in a secure information zone.
That picture, as innocent as it is, is putting him in jail for a year, and is going to have him discharged from the Navy. This is an honest mistake. No malice. No deceit. When asked about it, he fessed up.
You'll notice that isn't the case with H.Clinton. There wasn't malice. But there was certainly deceit.
~Jeordam
Saving the Princess, Humanity, or the World-Entire since 1985