This is a relatively easy question to answer... Are YOU going to receive the email? Are YOU going to have access to the time it was submitted? Obviously not. Since you, nor I are going to receive an email, then how is the integrity of the submissions going to be monitored?
Okay, so maybe HWBot is not needed... BUT some form of "live submission site" should be required in which everyone (the overclocking community) can review the results. That's about as close as you can get to a spectator sport even if all the action is in the last 15 seconds of the competition.... Clearly this competition is very interesting (to everyone), otherwise you nor I would have wasted our time voicing our opinions