Advantages of moderating comments via email notificationThe biggest advantage of moderating comments via email notification is that in the email notification message, there is a link to the post where the comment was made. This link is non-existent if you Moderate comments from Dashboard. This very useful link allows you to quickly go to the post where the comment was made if you need a response and save you the hassle of having to save the post title, then searching for the post in the Dashboard when you moderate comments from the Dashboard. Further, you have a permanent record of the comment plus the link to the post in your Inbox which you can refer to if ever necessary. A further advantage is you can have a solution if accidentally delete a comment or want to edit a comment (click BACK button to get back to this page).
How to moderate comments via email moderationYou will first have to set comments to moderation and provide an email address to send the email notification for comment moderation. If you do not give an email address, your only choice is to moderate comments via the Dashboard with its resultant problems.
This is how an email notification for comment moderation will look like.:
Note that the full text of the comment is visible plus there is link to the post where the comment was made and another link to the profile of the commentator (both highlighted by red ellipses). If you click publish, you will be taken to a page with another link to the post. Click on that link and you will be in the post, ready to respond to the comment. In this case, the link in the email notification is superfluous, but may be helpful, say, you want to check the post before you publish or reject the comment, useful as a permanent record, if you accidentally deleted the comment, etc.