If you have included a date variable – order_date or package_eta – in your emails they date will now be formatted in a way that is correct for the marketplace they purchase from.
That means:
Amazon North America (Amazon.com, Amazon.ca and Amazon.com.mx): mm/dd/yyyy
Amazon Europe (Amazon.co.uk, Amazon.de, Amazon.fr, Amazon.es, Amazon.it): dd/mm/yyyy
Amazon Australia : dd/mm/yyyy
Amazon India: dd-mm-yyyy
Amazon Japan: yyyy年mm月dd日