Comment Mail Module (Drupal)
When you run multiple blogs and websites, it can be difficult to keep track of comments. If your comments need to be approved before they go live, they may sit in a moderation queue for days until you get around to checking them.
Some systems like Wordpress deal with this by sending you an email when a new comment is made. However, Drupal does not have such a feature by default.
Thankfully, there is a simple module called Comment Mail that you can install that will do the job for you. When ever someone leaves a comment, it will email you with the comment and links to accept it, decline it, edit it or decline it and ban that particular user/IP address.
It will send the email to the site administrators email address by default, but you can change that to any email address that you like.