magento_marketplace_-_stamps_product_image_1_2.png USPS Shipping with Postage

Compatible With: Community 2.0, 2.1, 2.2, 2.3

Tech Specifications

Current Version:
Stable Build
11 April, 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 checkout process. Also, Pay Postage & Print Shipping Label within Magento Admin.


Back to top is a leading provider of Internet-based postage services.’s online postage service enables small businesses, enterprises and online retailers to print U.S. Postal Service-approved postage with just a computer, printer and Internet connection, right from their home or office. USPS Shipping with Postage is an extension for Magento 2 that helps you to completely automate USPS shipping using by displaying shipping rates on the cart / checkout page, paying postage, and printing labels from within Magento. 

You have to Signup for a account and Subscribe Stamps service to make use of this extension. Base plan starts from $15.99/Month. For more details, Check out pricing plan.

Real Time Rates: Using this plugin, your Magento Store will be capable of presenting real-time USPS shipping rates to your Customer during 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. 

Label Printing Postage: After order completion, Seller will be able to go to Order admin page and print the USPS shipping label with Postage Payed and ready to Ship.

Weight Based Shipping: The USPS shipping rates charged while order and label printing will be based on the Weight of Order / Package. Plugin even has configuration option on 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. 

Create and Cancel Shipment: Seller can Create the Shipment Label from 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 Create Shipment process.

How does it work?

Step 1: Install the Extension, input your Stamps Account details and enable Stamps – USPS Shipping Method for Magento.

Step 2: During checkout, Customer sees USPS shipping rates provided by Stamps, based on items in their cart before placing an order.

Step 3: Pay Postage and Print Label from within Magento Order Admin page.

Main Features

Live Shipping Rate: Based on the product weight, shipping destination etc., this Extension fetches USPS postage rates from your Stamps account for both domestic and international shipping services. You can choose to return list rates or account / negotiated rates.

Shipping Price Calculator:

Get Stamps USPS postage rates for 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

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 

Print Shipping Label with Postage:

Print shipping labels within Magento.

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.

Weight Based Shipping:

Pack items based on weight using Magento packaging types.

Services / Packages Types:

You can choose desired services to display while checkout.

Handling Fees:

Option to set up handling fees.

Other features

  • Disable Printing Postage Amount on Label.

  • Insurance Option.

About Stamps is a leading provider of Internet-based postage services. With over 500,000 customers, Stamps’s online postage service simplifies access to the lowest USPS shipping rates and the most popular USPS services for small businesses, enterprises & online retailers. Whether you ship one package a day or 1000, from your garage or from a giant warehouse, Stamps has the tools to make your USPS® shipping process faster, more affordable and more efficient than ever before. 


For the integration to work, you need to enter user credentials in the settings screen of Stamps Extension

For obtaining Stamps credentials, you have to signup for a Stamps account.



Installation Guide:

User Guide/Manual:


Post-Sale Technical Support:


Release Notes

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  • Compatible with 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 CE: 2.0 2.1
  • Stability: Stable Build
  • Description:

    Stability Improvements.


  • Compatible with 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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