| Name | Description |
|---|---|
| Address | A US postal address |
| AddressVerify | USPS Address Verify Class used to verify an address is valid. |
| FirstClassServiceStandards | Class FirstClassServiceStandards. |
| InternationalLabel | Class InternationalLabel. |
| OpenDistributeLabel | Class OpenDistributeLabel. |
| PriorityLabel | Class PriorityLabel. |
| PriorityMailServiceStandards | Class PriorityMailServiceStandards. |
| Rate | USPS Rate calculator class used to get a rate for shipping methods. |
| RatePackage | |
| ServiceDeliveryCalculator | Class ServiceDeliveryCalculator. |
| TrackConfirm | Class TrackConfirm. |
| USPSBase | USPS Base class used to perform the actual api calls |
| XML2Array | |
| XMLParser | |
| ZipCodeLookup | USPS Zip code lookup by city/state used to find a zip code by city/state lookup. |