For most carriers, we recommend requesting specific interface credentials from the carrier. We call these interfaces "private", opposed to "public" ones.
Whereas for a public interface, we as parcelLab directly query the courier, with private interfaces we do so in the name of the shop. This offers the possibility to extract more detailed information, that otherwise wouldn't be shared due to privacy restrictions.
We differentiate between parcel, package and courier carriers where you just need to get credentials:
On the other side are home delivery carriers, freight forwarders and truckage companies. Those usually require to set up an interface, but the import and matching of the status data needs to be done by our team.