groups_notification_new_membership_request()
Function: Notify group admin about new membership request.
Source: bp-groups/bp-groups-notifications.php:126
groups_notification_membership_request_completed()
Function: Notify member about their group membership request.
Source: bp-groups/bp-groups-notifications.php:191
groups_notification_group_updated()
Function: Notify all group members when a group is updated.
Source: bp-groups/bp-groups-notifications.php:26