ShipmentTrackingAPI usage noteshttps://shipmenttrackingapi.com/blogShort guides to tracking USPS, UPS, FedEx and DHL packages from code.en-usThu, 12 Nov 2026 00:00:00 GMTTrack 35 USPS packages in one requesthttps://shipmenttrackingapi.com/blog/bulk-usps-tracking-apihttps://shipmenttrackingapi.com/blog/bulk-usps-tracking-apiThu, 12 Nov 2026 00:00:00 GMTA USPS request carries up to 35 tracking numbers and still counts as one lookup. This note covers the request, the order of the results, partial failures and lists longer than 35.