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): 3.9.0 R1 - Current


In this article, you will learn:

Setting up USPS Web Tools Account

Adding USPS into PinnacleCart


Setting up USPS Web Tools Account


Note: Before setting up any Real-time Shipping Method, you will need to add weight to your products and set up 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 PinnacleCart. Follow the steps below:


        1. Go to https://www.usps.com/business/web-tools-apis/welcome.htm

        Click the Register Now button to start the process.

USPS register now button


        2. On the registration page, be sure to answer all the questions appropriately.

USPS registration form


        3. Agree to the License Agreement and hit the submit button.


        4. 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


The next step is adding USPS into PinnacleCart. Follow these steps below:


        1. Go to Settings > Shipping & Delivery > Shipping Methods

shipping methods


        2. Select the Add domestic Method if you're shipping to the Country in your origin settings.

add domestic method


Below you will see the options for your country, Select USPS in this case, and choose the method you wish to allow.

add new shipping method


        3. Next, click Shipping Settings and then the Realtime Shipping Methods tab. Scroll down to the USPS Settings

        section, fill out the form with all of the USPS credentials and URL provided to you in your confirmation email.


USPS settings 



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



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.