Display USPS rates for a variety of shipping methods, in real time, both at checkout and in your cart preview. Plus, print labels and send tracking number emails to your customers automatically.


Your customers never pay too much, and you never charge too little for shipping. Domestic & International destinations are supported for both rate lookup and label printing, and a variety of options including rate calculations by box size(s), product dimensions, weight and more.


NEW: Compatible with PrestaShop 1.6

See below for additional destails, demo links, reviews and more.
change log
links to demo

Get real time shipping rates (domestic & international) from the USPS website.

Generate & print labels directly from the backoffice order page, and automatically send tracking number email.

NEW: Option to generate a USPS shipping label for non-USPS orders

Shipping rates are calculated by weight and dimensions or one of the USPS boxes.

Single Box - Assign one box size which will be used for all products:
Multiple Boxes (Fixed Size) - Define how many products can fit in a box (number), or calculate only by weight.
Multiple Boxes (Product Dimensions) - Define all the box sizes you use for shipping, assign dimensions to your products, and the module will automatically calculate (using an algorithm we developed) how many boxes are needed to fit all the products (always trying to use the smallest / lowest number of packages).

* New * Ability to have free shipping by Product, Category, Manufacturer or Supplier.

You can select which shipping options should be available.

Each shipping method can have its own Free Shipping Limit, Additional Fee, and Insurance (international only).

Display a shipping preview on the product page, which does not require the customer to login.

Smart caching system for maximum speed.

* USPS does not offer the ability to pay for postage when generating a label. Postage must be paid separately, usually upon package dropoff.


Use Voucher Code "SHIPPING" to get $10 discount when buying 2 shipping modules.

USPS does not offer the ability to pay for postage when generating a label. Postage must be paid separately, usually upon package dropoff.

The Module requires CURL (a Standard PHP extention).

V1.0.1 (12/20/10)
Bug fix for free shipping in PS 1.3.3

V1.0.2 (01/20/11)
Update to the latest USPS API.
Modified files for PS 1.3.6
Added Media package type.


V1.1 (02/15/11)
Support for multiple boxes (and box sizes), by product dimensions, number of packages or weight.
Downloadable products don’t show product shipping rates.
Cache improvements.


V1.1.1 (02/26/11)
Added debug mode for automatic box detection (shows the number of packages used and their sizes).
Bug fix for automatic box detection.
Empty Handling no longer shown in shipping rates preview.
Cart will show shipping rates for non-logged users after they preview rates for any product.
Added modified files for PS 1.3.7


Bug fix for multiple package rates.
Support for PS 1.4
Bug fixes for caching system.


V1.1.3 (04/02/11)
Improved boxing algorithm.
Fix for shipping rates preview on PS1.4 (unavailable methods were showing as Free).
Caching fix from previous version.
All zip codes are limited to 5 characters (using more then 5 was not returning results from USPS)
Fix for undefined notices.


V1.1.4 (04/09/11)
Bug fix for a potential theme problem in PS 1.4


V1.1.5 (06/03/11)
Fix for shipping cost info in order history.
Improved boxing algorithm.


V1.2 (03/05/12) * PS 1.4+ only 
Improved cache.
Shipping preview in the cart block (Does not require login).
Shipping preview with state selection (for negotiated rates).
Shipping preview in product page respects quantity + attribute selection.
Ability to change the default shipping method from the Preview.
Ability to turn on / off address update based on shipping preview.
Improved boxing algorithm.
Extra charge for shipping can be decimal.
Ability to see an XML log of USPS request.
Automatic Update Notification.
Free shipping per product, category, manufacturer or supplier (per shipping method).
Fix for currency conversion.


V1.2.1 (05/13/12)
Fixed address change in Shipping Preview.
Attribute weight impact is applied to product page shipping preview.
Overweight orders will not show any carriers (was showing free before).
Optimized caching.
Compatible with UPS & Fedex 1.2

V1.3 (11/09/12)
Support for PS 1.5
Optimized module code structure.
Support for product specific added cost.
Support for PS shipping estimator.
Added option for Standard / Commercial rates .

V1.3.1 (11/14/12)
Fix for address change (was not being updated in the module).
Fix for backwards compatibility.

V1.3.2 (12/02/12)
Fix for time zone (all requests made in CST).
Fix for range behavior in shipping preview.
Fix for extra shipping cost in cart preview.
Improved caching of invalid rate requests.
Using external CSS for shipping preview.
Option to hide / display address fields in preview.

V1.3.3 (01/06/13)
Fix for shipping preview check for logged customers (PS 1.4)
Fix for multiple shops (carriers not always created in all shops).

V1.3.4 (01/31/13)
Fix for a potential issue when using payment modules that redirect to a 3rd party site (on call back, shipping was returning 0).
Improved backwards compatibility code.
Removed all uses of deprecated isLogged()

V1.3.5 (02/14/13)
Fixed a bug with international carriers when editing (was messing up the shipping method)
Fixed a bug with tax being added twice in checkout page.
Fixed a bug where zipcode was disabled (no rates were returned).
Product dimensions can be smaller than 1

V1.3.6 (05/03/13)
Updated Carrier.php override (PS 1.5)
Fix for placing an order from the Backoffice.


V1.4 (08/26/13)
Added Label Printing and automated email tracking number emails
Updated configuration page layout and added more detailed instructions.
*Price increase


V1.4.1 (09/02/13)
Fix for new custom hook system (PS 1.5.5+)


V1.4.2 (11/05/13)
Fix for International shipping rate when using multiple fixed size boxes
Moved printing label functions to a specific label printing class


V1.4.3 (12/19/13)
Implemented option for USPS label printing in non-USPS orders
Fixed deprecated function Hook::get()
Fixed unavailable carriers showing up when free shipping limit was reached.
Updated override Carrier for PrestaShop v.1.5
Fixed warehouse movement when label printing & status changing (PS 1.5)
Fixed label printing on separate pages
Fixed XML request for weight to use 3 decimals digits


V1.5 (05/03/14)
Added support for PrestaShop 1.6
Fixed grams to kilo grams conversion
Fixed for free shipping limit with multiple currencies (currency conversion was not taken into account)
Added reload button in order detail page to update shipping information after generating label printing
Added update button in API information section
Added support for multiple flat rate packages in a shipment


V1.5.1 (06/19/14)
Added support for having multiple label printing modules for an order
Added support for international letter / parcel
Shipping preview optimization (to avoid scrollbars)
Fix for missing order name variable in tracking # email
Fixed config page layout issues in Firefox
Fixed commercial rate option for international orders


V1.5.2 (08/18/14)
Added account validation request and response to configuration page when account info is invalid
Added server error to XML Log
Improved performance of rate requests
Fix for shipping preview fields formatting (certain themes only)
Fix for configuration page layout (Firefox browser only)
Fix for bug related to zip code requirement in shipping preview
Fix relating to zip codes when 'Required' is not selected in configuration page

V1.5.3 (08/27/14)
Updated new tracking URL
Added option to select default label printing display.


V1.5.4 (09/19/14) - *Important Update*
Added domestic First Class methods
Fixed flat rate shipping price / availability issues


V1.5.5 (10/13/14)
Fixed shipping to Puerto Rico (module was considering it a International destination)
Fixed issue when destination country has multiple words (I.E New Zealand)
Fixed issue with currency conversion


V1.5.6 (01/06/15)
Added option to collapse or expand by default the labels on order page
Added fix for servers still using SSLv3
Added shipping preview customer group validation
Sorting in shipping preview by the PS settings
Shipping preview displays state only when needed
Fixed small glitched when closing the shipping preview
Added option to select origin country if it's not enabled in PrestaShop
Fixed issue with free shipping validation (was enabling carriers that are not available)


V1.5.7 (04/08/15)
Fixed issues with shipping preview (in some cases it would be hidden and retain old state / city values)


V1.5.8 (06/01/15)
*IMPORTANT* Update for Priority shipping to Canada
Fixed potential issue with old cart use for admin order creation


V1.5.9 (07/26/15)
Added support for PrestaShop 1.6.1


V1.6 (08/13/15)
Fixed issues with flat rate envelopes and boxes


V1.6.1 (10/04/17)
Fix for First Class Mail

Q) What is the difference between this module, and the USPS module that comes with Prestashop?


A) The USPS module that comes with Prestashop (and many other USPS modules for other carts) are very limited when it comes to calculating the boxes that are used for shipping.

They generally offer 2 options:

1) Place all the products in 1 box with a fixed size - This can cause high estimates, as a small product and a large product will share the same box size (which would have to be big)

2) Place each product in its own box - This causes even higher estimates, since using 2 boxes instead of 1 larger box is more expensive.


Our module uses an advanced algorithm (developed by our team) to calculate products / boxes.

It lets you specify multiple box sizes that you typically use for shipping, when products are added to the cart, the module automatically calculates how many boxes / which sizes are needed to fit all the products. It will always try to use the fewest boxes and the smallest sizes.

This provides the most accurate rates for your customers.


Our module lets the customer see a preview of the shipping rate for each product (no login required), as well as the ability to set a free shipping limit per shipping method and zone.

Contact us for support anytime using our Contact Us page

Front End demo - PrestaShop 1.6 (Standalone) http://demo.presto-changeo.com/usps/casual-dresses/3-printed-dress.html

Back end demo - PrestaShop 1.6:
Replace (dot) with .
Login: [email protected]
Password: test1234

Front End (Connected to the backend) http://demo.presto-changeo(dot)com/usps/bodemo/



You'll get also:

  • Free installation
  • Full lifetime support

We are happy to provide a free one-time installation and full, lifetime support with the purchase of any module (does not include customization of the module, or integration with 3rd party modules.).

Additional installations are available for a small fee after the one-time free installation is used. Fees for additional installations are:

- $25 for modules priced $0 - $99 - $50 for modules priced $100+ Module Support Upgrade Policy Refund Policy

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