These are some good advices, and they're not limited to VC. In the academic domain researchers and professors also have a lots of email to deal with, maybe not as much but we also have to consider that reading email is even less their job than a VC (and they have enough freakin administrative tasks that take on their working time). As a matter of fact, I've always had quicker (and often better) responses when I wrote email that more or less follow the rules described in the linked post, for instance when looking for an internship, or requesting a specific paper.