For CouriersPlease, we require the 9 digit account number and 4 character customer code for accessing your Account. If you do not have the CourierPlease account, please contact firstname.lastname@example.org or request CouriersPlease to get that or to read more click here
To Setup CouriersPlease just go to Settings > Carriers > Add Courier > CouriersPlease
Once you are in the CouriersPlease settings page, you must check the 'Enable CouriersPlease' check box. Fill in your account number, customer code. No need to update the Current Consignment Increment field as this is auto updated when you manifest your shipments.
Click the save button at the bottom of the section.
CouriersPlease will provide different product codes based on the requirement of the customers and account eligibility. Product codes for shipments needs to be updated here and these will be available on the ShipIT Shipment screen.