First of all, thanks for the great plugin – works flawless!
2 thoughts though:
1. Is there any way to let readers unsubscribe from comment notifications? A link [shortcode] in an email would be awesome.
2. If there is no “Reply to comment” button (when maximum comment levels are exceeded), people normally click “Reply” one level upper. This means they won’t gen any notifications on their comments, because there is no “Reply” button for their left comments, so no one can actually “reply” on their comment.