StarShipIT provides access to Australia Post, DHL, Royal Mail, Aramex, Couriers Please, Deutsche Post, DHL, DPD, Hunter Express, NZ Post, Quantium Solutions, Seko, Sendle, Singapore Post, StarTrack, TNT, Toll, UPS, Zoom2u, Border Express, Hermes
Sign up indiviually at StarShipIT. You will require API Key and Subscription Key to complete the setup. You can find these under API Keys section from StarShipIT dashboard.
Once setup you will get Live freight pricing from StarShipIT during checkout.
You can set this up in StarShipIT's backend. You will need your website URL and API password which can be found from the API section.