I agree. However this might not be as effective as one would expect if you usually realize your mistake only once you're past the point of no-return. In other

I agree. However this might not be as effective as one would expect if you usually realize your mistake only once you're past the point of no-return. In other words, if you know your mail won't be sent right away, will that delay the background, subconscious mental process of analysing your actions to see if you screwed up?