stamp-banner-240.jpg USPS Shipping With Postage



Magento Platform
Open Source (CE)
2.0, 2.1, 2.2, 2.3

Tech Specifications

Current Version:
Stable Build
23 December, 2019
Extensions, Shipping & Fulfillment, Order Management (OMS)
License Type:
GNU General Public License 3.0 (GPL-3.0)


This extension will display USPS shipping rates during the checkout process. And provides the ability to pay postage and print shipping labels within the Magento Admin.


Back to top is an Internet-based postage service provider. Stamps' online postage service provides access to the lowest USPS shipping rates and services as well providing the ability to print USPS approved postage for small businesses, enterprises, and online retailers. USPS Shipping with Postage integrates your Magento store with USPS. The extension helps you to completely automate USPS shipping by displaying live shipping rates from your USPS account directly on your cart and checkout page. This way your customers can select their desired shipping option while placing the order. Moreover, the extension takes convenience to another level by allowing you to pay postage and print shipping labels directly from your website.


Account & Pricing

You need to have a account in order to use this extension. If you do not have a account please click here to  Signup and subscribe to the service before using this extension. The base plan starts from $17.99/Month. For more details, check out the pricing plan.  For the integration to work, you need to enter user credentials in the settings screen of Stamps extension.



Real-Time Rates

Using this plugin, your Magento Store will be capable of presenting real-time USPS shipping rates to your customer during the checkout process. This real-time rates will be based on the shipping destination and weight of items in the cart. This accurate USPS shipping cost will be charged to the customer while checkout and will be part of the order details. 


Shipping Price Calculator

Get Stamps USPS postage rates for the following shipping services.

  • First-Class Mail
  • Priority Mail Express
  • Media Mail Parcel
  • Library Mail Parcel
  • USPS Parcel Post
  • USPS Parcel Select
  • USPS Critical Mail
  • Priority Mail
  • Priority Mail Express International
  • Priority Mail International
  • First-Class Package Service International


Print Shipping Label With Postage

Shipment details would be sent to Stamps online account and then the shipping label would get generated which you can print. Postage is automatically paid on these labels using your Stamps account. This Extension integrates with Stamps APIs to print domestic or international shipping labels.


Create & Cancel Shipment

The seller can create the Shipment Label from the individual order admin page. Once Label is created, there is an option to Cancel the created shipment label, which will revert the amount paid during the Create Shipment process.


Weight Based Shipping

The USPS shipping rates charged while order and label printing will be based on the Weight of Order / Package. The plugin even has a configuration option on the Settings page to define maximum package weight. In this case, the items in the order will be split into multiple packages based on the weight. 


Supported Packing Types

  • Package
  • Postcard
  • Flat Rate Box
  • Flat Rate Envelope
  • Flat Rate Padded Envelope
  • Legal Flat Rate Envelope
  • Letter
  • Large Envelope or Flat
  • Large Flat Rate Box
  • Large Package
  • Oversized Package
  • Regional Rate Box A
  • Regional Rate Box B
  • Small Flat Rate Box
  • Thick Envelope 


Handling Fees

If you ship heavy products and do that heavy lifting yourselves, you can add some handling charges to your shipments, using the extension. The additional handling fee will be added to the Shipping Cost and will be paid by your customers. 


Additional Features

  • Disable Printing Postage Amount on Label
  • Insurance Option
  • Shipment Tracking by


Additional Guides




Post-Sale Technical Support

Release Notes

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  • Compatible with Open Source (CE) : 2.0 2.1 2.2 2.3
  • Stability: Stable Build
  • Description:

    - Support for Generating Stamps USPS shipping labels for orders placed with Flat Rate
    - New Box Packing Method to set up custom boxes which will be used while generating packages and shipping labels


  • Compatible with Open Source (CE) : 2.0 2.1 2.2 2.3
  • Stability: Stable Build
  • Description:

    Using a New Integration ID for Stamps.


  • Compatible with Open Source (CE) : 2.0 2.1 2.2 2.3
  • Stability: Stable Build
  • Description:

    Minor Bug Fixes while Generating Shipping Labels


  • Compatible with Open Source (CE) : 2.0 2.1 2.2 2.3
  • Stability: Stable Build
  • Description:

    Stability improvements and compatibility check with Magento CE 2.3


  • Compatible with Open Source (CE) : 2.0 2.1
  • Stability: Stable Build
  • Description:

    Stability Improvements.


  • Compatible with Open Source (CE) : 2.0 2.1
  • Stability: Stable Build
  • Description:

    Fixed an issue with address in shipment creation.


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The best place to start if you need help with a specific extension is to contact the developer. All Magento developers have both a contact email and a support email listed.

Q & A

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