Advanced
Navigate to WooCommerce → ShipLabel → Advanced.
| Setting | Default | Description |
|---|---|---|
| Label file retention | 90 days | Label PDFs older than this are deleted from disk automatically |
| Debug mode | Off | Logs full request/response data for every carrier API call |
| Webhook URL | Auto-generated | Read-only; the URL carriers can call for tracking push updates |
| Webhook secret | Auto-generated | Regenerate to invalidate the current webhook URL |
Click Regenerate next to the webhook secret to issue a new secret and URL - do this if you believe the current one has leaked. Regenerating flushes WordPress rewrite rules once, automatically.
Debug mode logs the full request and response bodies sent to/from USPS and FedEx, which can include address data. Turn it off once you've finished troubleshooting.
See Tracking Sync for how the webhook fits into ShipLabel's tracking update flow.