TranslatePress/Polylang/Loco Translate

YayMail Pro with Multilingual plugins
When using YayMail Pro with Polylang / TranslatePress / Loco Translate, you can see the language bar at the right corner to choose and customize emails for each language set on your site.
For instance, when a customer checks out in English, he receives English emails. When a customer checks out in German language, they receives German emails.