I don't think the secret documents have anything to do with the reasons that the server(s) were deployed or how they were used. The exposure of secret documents (if it occurred) was an accidental byproduct of the REAL purpose of this complicated, dangerous, and illegal operation.
That real purpose was to conceal from "Obama", Jarrett, and Michelle the size and scope of the illegality embedded in the Clinton Foundation/Global Initiative. I'm quite certain that was a straight-up bribery/money laundering/tax evasion scheme, and if the FBI has THOSE documents, all three of the Clintons are in big trouble.
Yep, the Clinton “charity” was set up to enrich the Clintons while allowing wealthy liberals to write the donations off their taxes. And if a little treason was required to get those donations from foreign governments, so what? It’s not like the Justice Department is going to prosecute the Clintons. (spit)