On this page there’s 4 highlights (view in Baymard Premium) outlining what Book of the Month are doing right and wrong.
(Tip: use the arrows above or on your keyboard to navigate all 207 address validator examples.)

The screenshot was taken on February 4, 2022 and depicts Book of the Month’s Address Validator. In total, we’ve reviewed 24 of Book of the Month’s page designs. To see them all, visit the full Book of the Month UX case study.