Hillary destroyed her server, which technically means that her e-mails are unrecoverable. But those e-mails were sent to somebody. And even if all those “somebodies” destroyed their servers, those e-mails are still in the Cloud. Out there in the Ethernet somewhere. And a talented young hacker can pull them down if he feels like it and/or gives a rat’s a$$. And if that came to pass, the fecal matter would make violent contact with the oscillating device as far as Hillary’s presidential campaign is concerned. In other words, the $#!+ would hit the fan, and Hillary’s presidential campaign would be toast.
But then again, her Men In Black might hunt you down, take you out, and make it look like a suicide....
The NSA has every single email, as do all the people she corresponded with. Gowdy has known this all along. He just needs to subpoena the right people/agency.
I think he lacks the courage to really go after Hilliary. It is either that, or he complicit in creating a governing class above the law. (So, I think he is chicken.)