Log into your backend -> components->compojoomcomment->settings->open the settings->go to the security tab.
There you have options such as - notify moderator and enable user notifications.
You can disable the user notification and leave only the administrator get an e-mail when someone posts a comment.
There is no point and click interface to exclude an administrator from the notifications. You will have to go to
components/com_comment/classes/joomlacomment/JOSC_notification.php on line 169 you can fine the following function:
function getMailList($contentid='', $exclude='')
change it to this:
function getMailList($contentid='', $exclude='xxx@xxx.xx')
This email address is being protected from spambots. You need JavaScript enabled to view it. = the email that you don't want to receive notification