system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is Hillary Clinton using her personal email a big deal?
gpt
By law, these are considered government related business documents and must be stored and maintained on government servers for future access in case of investigation, etc.  Anything that she sent from her personal account would not be stored on a government server.  Additionally, sending from a personal account is just simply not as secure as sending from a White House account and is more susceptible to hackers.