This hook can be used for doing some action after sending the email notification to the post subscriber.
wpdiscuz_enable_user_mentioning
This filter can be used for enabling or disabling the user mentioning.
wpdiscuz_notify_all_comment_subscribers
This hook can be used for making some actions after sending the email notification to the subscriber who chooses the “new follow-up comments” option.
wpdiscuz_live_update_new_comment_ids
This hook can be used to filter the comments appearing in the live update.
wpdiscuz_notify_comment_subscribers
This hook can be used for making some actions after sending the email notification to the subscriber who has subscribed to the current comment.
wpdiscuz_notify_followers
This hook can be used for doing some actions after sending the email notification to followers.