There is also a C guide [1] which has a pretty interesting email policy...
I’m generally available to help out with email questions so feel free to write in, but I can’t guarantee a response.
I lead a pretty busy life and there are times when I just can’t answer a question you have.
When that’s the case, I usually just delete the message. It’s nothing personal;
I just won’t ever have the time to give the detailed answer you require. [...]