Zen Cart Users: Action Required for USPS Shipping Module Before January 25, 2026

If you’re using Zen Cart’s USPS Shipping module, take note—you must switch to a different USPS Shipping module before January 25, 2026. The reason? USPS is discontinuing its Web Tools API, which the current module relies on.

What This Means for You

• The current USPS Shipping module will stop working once the Web Tools API is retired.
• A new USPS module is available, using the updated Web Tools API.
• You’ll need new API credentials under USPS’s new API system to continue offering USPS shipping options in your store.

What You Need to Do

1. Check your Zen Cart admin to confirm whether you are using the USPS Shipping module. You’ll find it under Modules >> Shipping, and it will look like this:
   
2. We can handle the new API credentials for you or provide step-by-step instructions if you’d prefer to create them yourself.
3. Contact us to schedule a time for us to install and configure the new USPS Shipping plugin for you.

Don’t wait until the last minute—if you don’t switch by January 25, 2026, USPS shipping rates and services will stop functioning on your Zen Cart store.

Let’s get this taken care of now. Contact us today to ensure a smooth transition before the deadline.