What is never investigated I saw her MOTIVE for setting up that system. It's curious why that never comes up. I believe it was set up to facilitate and cover up the entire Clinton criminal enterprise and their bribes and kickbacks from other nations. It was the essential ingredient in her pay-to-play schemes.
I believe the motive may also have been to facilitate the selling of state secrets to foreign agents. The hard part of espionage is transporting the secret material out of the secure area. Clinton automated that.