Pluggable function – wp_notify_postauthor

Hi, I’m relatively new to wordpress, and I’ve noticed I don’t receive notification by email about comments by default. Now I’ve seen that there are two functions included in wordpress that allow for this. I’d like to use them both, as I (the admin) would like to be notified as well as whomever authored the post.

My question is, how/where do I call wp_notify_postauthor and wp_notify_moderator?

Thanks in advance