Originally Posted by atikovi
So if you leave a comment or question, you have no way of knowing if anyone made a reply?
You will see it under the notifications icon on YouTube's website, but I don't believe you will be notified via email.
EDIT: Actually, I just went into my Youtube settings, and i see an option there to be notified if someone replies to your comment, but I can't make out if that is communicated via email. Have you tried it?