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WooCommerce USPS Shipping Method

WooCommerce USPS Shipping Method v5.5.6

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WooCommerce USPS Shipping Method v5.5.6
  • WooCommerce 10.8 Compatibility.
  • WordPress 7.0 Compatibility.
WooCommerce USPS Shipping Method v5.5.4
Version 5.5.4Released on 2026-04-13
  • Correct large envelope (flat) classification to match USPS standards — items that exceed any (previously all) of letter dimension now qualify as flats.
  • Legacy API credential validation no longer runs when switching to REST API, preventing headers-already-sent warnings.
  • Validate empty Origin Postcode: show admin notice on save and skip API requests.
  • FCPIS rates incorrectly filtered for valid custom boxes.
  • Hide product-level "Envelope" checkbox when REST API is active, as it only affects Legacy (SOAP) API rates.
  • WooCommerce 10.7 Compatibility.
WooCommerce USPS Shipping Method v5.5.3
Version 5.5.3Released on 2026-03-30
  • Weight based shipping calculations with fractional quantities.
  • Set minimum girth to 1" to prevent 400 errors with small dimensions.
WooCommerce USPS Shipping Method v5.5.2
2026-03-23 - v5.5.2
* 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.
WooCommerce USPS Shipping Method v5.5.1
Version 5.5.1Released on 2026-03-09
  • WooCommerce 10.6 Compatibility.
WooCommerce USPS Shipping Method v5.4.4
Version 5.4.4Released on 2026-02-23
  • Custom Flat Rate Boxes/Envelopes with adjustable dimensions to account for bulging allowed by USPS.
  • Inaccurate International First-Class Mail letter rates.
WooCommerce USPS Shipping Method v5.4.3
Version 5.4.3Released on 2026-02-06
  • Add missing Weight based shipping support to First-Class.
  • Filter out Cubic pricing rates and improve flat rate filtering.
  • Make fractional item quantity rates calculations more accurate.
  • WooCommerce 10.5 compatibility.
WooCommerce USPS Shipping Method v5.4.2
Version 5.4.2Released on 2026-01-27
  • Missing or wrongly priced Flat Rates.
WooCommerce USPS Shipping Method v5.3.1
Version 5.3.1Released on 2026-01-20
USPS API migration notices to inform merchants about upcoming API changes and ensure smooth transition.
WooCommerce USPS Shipping Method v5.3.0
Version 5.3.0Released on 2026-01-06
  • Updated REST API flat rate box validation to skip package count checks, in line with the Legacy API.
  • WordPress 6.9 and WooCommerce 10.4 Compatibility.
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