Tracking · head-to-head
Correios vs PostNord
Correios exposes a REST API suite covering package tracking (Rastro), address lookup (Busca CEP), shipping cost (Preço), and delivery-time estimates (Prazo) for Brazil's national postal service. Access is gated behind a commercial shipping contract rather than public self-serve signup, with keys issued and validated through the CWS (Correios Web Services) portal under a Meu Correios login. A 2026 security tightening now restricts tracking queries to parcels tied to the querying contract, closing off third-party lookups of packages a caller didn't send.
PostNord's developer portal exposes REST APIs for shipment tracking, service-point lookup, pickup booking, and postal-code surcharge data across its Swedish and Danish delivery network. Every endpoint requires an x-bap-key API key issued through the portal's self-serve signup, and responses carry CORS headers for direct browser calls. A Free plan covers a meaningful daily quota per method — 500,000 tracking calls a day, for one — with a metered Customer plan billing per call once volume climbs past those limits.
| Correios | PostNord | |
|---|---|---|
| Authentication | API Key | API Key |
| Pricing | paid | freemium |
| Formats | JSON | JSON |
| CORS | no | yes |
| HTTPS | Yes | Yes |
PostNord is freemium, while Correios is paid — PostNord is the cheaper way in.