Linking a carrier account
NexudeIT supports two ways of doing this:
Direct credentials— paste the API key, account number, and (where applicable) meter number issued by your carrier, and we store them encrypted. Direct rate calls to each carrier aren't switched on yet, so on their own these credentials don't bring live rates to checkout. Can be linked now: USPS, UPS, FedEx, DHL, Canada Post, Royal Mail
Aggregator relay (recommended)— when the platform has EasyPost configured (Shippo isn't supported yet), you can register your existing UPS / FedEx / USPS / DHL account through it in one step. EasyPost handles the per-carrier OAuth dance, label printing, and tracking webhooks, and it is what live rates at checkout come from. You pay EasyPost's flat per-shipment fee directly out of your EasyPost wallet — NexudeIT does not intermediate billing.
You don't have to link anything. Sellers who don't link a carrier just configure flat / per-kg methods, paste tracking numbers manually, and skip the rest.