The latest version is WooCommerce USPS Shipping 5.5.4, Released on April 13, 2026
Here’s what’s changed in WooCommerce USPS Shipping 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.
View the full WooCommerce USPS Shipping Changelog
Get WooCommerce USPS Shipping Version 5.5.4 with 12 months of updates for just $25!
Already a WPspring Club Member?
WooCommerce USPS Shipping Version 5.5.4 Released on April 13, 2026, is now available from your account downloads page. Sign up at wpspri.ng/club
(No Ratings Yet)
Loading...