Disabled processing order email for customer

backend/app/plugins/wiaas/includes/db-updates/wiaas-db-update-general.php

@@ -129,4 +129,13 @@ function wiaas_create_organization_roles_capabilities() {
 	foreach ($roles as $role) {
 		Groups_Capability::create( array( 'capability' => 'wiaas_' . $role ));
 	}
+}
+
+function wiaas_disable_processing_order_email_delivery() {
+    update_option( 'woocommerce_customer_processing_order_settings', array(
+        'enabled'   =>  'no',
+        'subject'   =>  '',
+        'heading'   =>  '',
+        'mail_type' => 'html'
+    ) );
 }