activity_format_notifications
Action Hook: Fires right before returning the formatted activity notifications.
Source: bp-activity/bp-activity-notifications.php:144
bp_activity_at_mention_add_notification()
Function: Notify a member when their nicename is mentioned in an activity stream item.
Source: bp-activity/bp-activity-notifications.php:165
bp_activity_format_notifications()
Function: Format notifications related to activity.
Source: bp-activity/bp-activity-notifications.php:26