One would think the Secretary of State would consider all her work related correspondence as classified.
If she had half a brain
Comey was writing lines for the Trump Campaign:
“Hillary: Too stupid to understand secret document classifications but thinks she is ready to be the president and C.E.O. of the largest, most powerful enterprise on the planet.”
And that’s the other side of it. Collectively, her correspondence quite sensitive information. Classifications above confidential are singular pieces of information which can cause damage.