Hackers?
The incriminating e mails are locked up within the State Department accounts of the receivers. One or two disgruntled bureaucrats has access to their own e mails and can easily leak them.
Less than five such Hillary e mails from with in the State Department or other Government agency or from foreign diplomats should do the bitch in
I will believe she is gone only when the house falls atop her, and they remove the ruby slippers!