It doesn't mean they were top secret when she sent them...
Continuing the narrative of "the messages weren't marked top secret, so Hillary did nothing wrong". Folks, Clinton was the Secretary of State, which means she acts as a classifying authority. Yes, this means she is able to determine when the content of a message rises to the level of top secret. Do you understand?
So this means Clinton, as Secretary of State, is incapable of violating classification laws due to the fact that she is a classifying authority?