The standard for criminal culpability, without regard for intent, under subsection (f) of the Espionage Act. The very legislation Comey re-wrote in his press conference where he also assumed the duties of the Attorney General.
No, it wasn’t reckless. It was a calculated move to avoid public disclosure of her crime syndicate.
The emails were copied and then altered to remove classified markings. Then they could be copied and moved to a separate system under her control.
It was a deliberate 6 or 7 step process. I saw a fantastic video about it here before the election. I’ll look for it.