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.