USPS (United States Postal Service) is one of the Real-Time Shipping options we offer within PinnacleCart. It communicates with your USPS account to pull in shipping rates for where you're delivering.

Applies to Version(s): 3.8.0 R1 - Current

In this article, you will learn

Setting up your USPS Web Tools Account

Adding USPS into PinnacleCart

Note: Before setting up any Real-time Shipping Method, you will need to add weight to your products and setup an Origin Address. Learn how to add weight at Adding a Product and adding an origin address at How to Enable Shipping - Start Here.

If you don't already have a USPS Web Tools, you will need to create one before adding USPS into Pinnacle Cart. Follow the steps below:

Go to

Click the Register now button to start the process.

On the Application [page be sure to answer all the questions appropriately.

Agree to the License Agreement and hit the submit mutton.

Once you arrive at the Confirmation page, you will want to look for an email from USPS. It will contain your USPS Username, USPS Password and the production URLs. You will need just the username for PinnacleCart.

Adding USPS into PinnacleCart.

Next step is adding USPS into PinnacleCart. Follow these steps:

Go to Settings > Shipping.

Click Add New Method at the top right.

Select the Country you're shipping to > Select Real-time > Select USPS > and select each USPS option you'd like to offer for shipping to the destination you've chosen.

Click USPS Settings.

In the USPS Settings pop-up, fill out the form with all of the USPS credentials and url provided to you in your confirmation email.


That's it! Now just add a product to your cart and checkout to make sure USPS is being quoted properly.

Links to Related Articles.

Adding a Product.

How to Enable Shipping – Start Here.

If you didn't get your question answered, please contact the Pinnacle Cart Support Team. To submit a ticket, go to the My Account drop-down menu at the top right of the admin area and select Support.