Articles on: Shipper Account

Get Credentials to An Post Shipping API

Overview


AfterShip Shipping is the best multi-carrier shipping software and API that enables you to automate shipping processes across USPS, UPS, FedEx, DHL, and 90+ other couriers. Get the required credentials and access An Post shipping API via AfterShip Shipping in just a few steps.


Get Developer Credentials


  1. Contact your An Post account manager to apply for API integration and get Email and Password. Make sure the email is also copied to [email protected]
  2. Input your Company Slug, Email and Password in Postmen.



Required API Credentials


  • Company Slug
  • Username
  • Password


Warehouse settings


When ship from An Post, please set up the correct warehouse in shipping as you did in An Post portal too.


  1. Log in to your An Post account using your E-mail/Username and Password.
  2. Go to Setup > Company Setup > Warehouses. Check what you have set up for An Post. If you don't have any, click on + Add new warehouse.



  1. Click Edit and copy the Name of the warehouse.




  1. Log in to AfterShip Shipping. Add a new Ship from location and paste the warehouse name in as Location name. Input other address information.



  1. Click Submit, and the Location name will be saved and can be found in the list of ship-from locations.


  • If you're using our Shipping UI portal to create labels, make sure you select the expected Ship from location to create label.
  • If you're using our Shipping API to create labels, make sure you copy the ID and include it in the ship_from.location_id of API payload if needed.




We do not support fulfillment shipment now


Developer Resources


Updated on: 27/10/2025