_notification", which the e-mails listen to add_filter( 'woocommerce_email_actions', array( $this, 'registerActions' ) ); } public function registerActions( $actions ): array { return array_values( array_unique( array_merge( (array) $actions, self::ACTIONS ) ) ); } public function registerEmails( array $emails ): array { $emails['TPT_Wholesale_Admin_New_Application'] = new AdminNewApplicationEmail(); $emails['TPT_Wholesale_Customer_Received'] = new CustomerApplicationReceivedEmail(); $emails['TPT_Wholesale_Customer_Approved'] = new CustomerApplicationApprovedEmail(); $emails['TPT_Wholesale_Customer_Rejected'] = new CustomerApplicationRejectedEmail(); return $emails; } }