Compatibility
Compatibility Matrix
| Plugin / Feature | Status | Notes |
|---|---|---|
| WooCommerce | ✅ Required | Core dependency |
| WooCommerce HPOS | ✅ Full | Declared compatible; works with High-Performance Order Storage enabled or disabled |
| WooCommerce Order Fulfillments (WC 10.2+) | ✅ Integrated | Detected automatically; see Order Fulfillments |
| WooCommerce Blocks Checkout | ✅ Compatible | Shipping methods appear in block-based checkout/cart |
| WindCodex ReturnDesk | ✅ Compatible | Independent plugins; no shared data required |
Carriers
| Carrier | API | Label formats | Destinations |
|---|---|---|---|
| USPS | USPS APIs v3 (OAuth 2.0) | PDF, TIFF | United States |
| FedEx | Ship API v1 (OAuth 2.0) | PDF, PNG, ZPL | United States and international (automatic customs declaration) |