Yes!
Email is like a chain letter, you get into the server and every email has a trail that can be followed backwards.
Once you have that, every person whose emails were sent thru that server can be traced back to their source.
And of course those sources have chains and trails of their own to follow..........
We no longer have any security for our government as Hillary likely tore apart and to shreds our national security, but to them “what difference does it make”.
They hide the ramifications of the serious nature of what she did as though she was working for Mary Kay Cosmetics. Cosmetic companies now have tighter security than our government does.