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Version 5.5.6
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The WooCommerce – USPS Shipping plugin integrates USPS shipping services directly into your WooCommerce store. It provides real-time shipping rates, automatic tracking, and label printing, ensuring a seamless and efficient shipping process for both store owners and customers.

How to download WooCommerce – USPS Shipping

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Already included languages : EN

We are not affiliated with WooCommerce – USPS Shipping nor its developers or owners. Please read the full disclaimer in footer.

HOW IT WORKS

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Core Features of WooCommerce – USPS Shipping

  • Real-time Rates: Get real-time shipping rates from USPS based on the customer’s location and cart contents.
  • Domestic and International Shipping: Supports both domestic and international shipping services provided by USPS.
  • Flat Rate Boxes: Utilize USPS Flat Rate boxes for predictable shipping costs.
  • Shipping Classes: Define shipping classes to offer different rates for different types of products.
  • Automatic Label Printing: Print shipping labels directly from your WooCommerce dashboard.
  • Tracking Information: Provide customers with tracking information for their orders.
  • Customizable Services: Enable or disable specific USPS services based on your preferences.
  • Fallback Rates: Set fallback rates in case USPS API is unavailable.
  • Box Packing: Automatically calculate the best box size for shipping based on product dimensions and weight.
  • Address Validation: Validate shipping addresses to reduce errors and undeliverable packages.

List of improvements in WooCommerce – USPS Shipping version 5.5.6

  • 2026-05-20 version 5.5.6
  • Fix FCPIS eligibility over-permitted provably-undersized packages with partial dimensions.
  • Tweak WooCommerce 10.8 Compatibility.
  • Tweak WordPress 7.0 Compatibility.
  • 2026-05-11 version 5.5.5
  • Add Debug logging at silent exit points in rate calculation.
  • Fix Don’t cache transient USPS API errors (429, 5xx) in rate response transients.
  • Tweak Promote genuine API failures from debug to error log level for visibility.
  • Tweak Update Jetpack Autoloader to v5.
  • 2026-04-13 version 5.5.4
  • Fix Correct large envelope (flat) classification to match USPS standards — items that exceed any (previously all) of letter dimension now qualify as flats.
  • Fix Legacy API credential validation no longer runs when switching to REST API, preventing headers-already-sent warnings.
  • Fix Validate empty Origin Postcode: show admin notice on save and skip API requests.
  • Fix FCPIS rates incorrectly filtered for valid custom boxes.
  • Tweak Hide product-level “Envelope” checkbox when REST API is active, as it only affects Legacy (SOAP) API rates.
  • Tweak WooCommerce 10.7 Compatibility.
  • 2026-03-30 version 5.5.3
  • Fix Weight based shipping calculations with fractional quantities.
  • Fix Set minimum girth to 1″ to prevent 400 errors with small dimensions.
  • 2026-03-23 version 5.5.2
  • Fix Filter out First-Class Package International Service rates for packages exceeding USPS dimensional limits.
  • Fix Restrict international First-Class Mail letter and envelope rates to items with zero declared value.
  • Tweak Split international First-Class into separate Mail and Package services for accurate rate naming.
  • Tweak Show packing method label in rate metadata for all packing methods.
  • Tweak Add rate description and mail class to rate metadata.
  • 2026-03-09 version 5.5.1
  • Tweak WooCommerce 10.6 Compatibility.
  • 2026-02-24 version 5.5.0
  • Tweak Correct version bump from 5.4.3.
  • 2026-02-23 version 5.4.4
  • Add Custom Flat Rate Boxes/Envelopes with adjustable dimensions to account for bulging allowed by USPS.
  • Fix Inaccurate International First-Class Mail letter rates.
  • 2026-02-06 version 5.4.3
  • Fix Add missing Weight based shipping support to First-Class.
  • Fix Filter out Cubic pricing rates and improve flat rate filtering.
  • Fix Make fractional item quantity rates calculations more accurate.
  • Tweak WooCommerce 10.5 compatibility.
  • 2026-01-27 version 5.4.2
  • Fix Missing or wrongly priced Flat Rates.
  • 2026-01-22 version 5.4.1
  • Fix REST API Unauthorized request retry.
  • 2026-01-21 version 5.4.0
  • Add USPS First-Class Mail Rates support to REST API.
  • Add “Display Delivery Times” setting to toggle estimated delivery times on shipping rates.
  • Fix Compatibility issues with Product decimal quantities.
  • 2026-01-20 version 5.3.1
  • Add USPS API migration notices to inform merchants about upcoming API changes and ensure smooth transition.
  • 2026-01-06 version 5.3.0
  • Fix Updated REST API flat rate box validation to skip package count checks, in line with the Legacy API.
  • Tweak WordPress 6.9 and WooCommerce 10.4 Compatibility.
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