Let's say you want to use English as your primary language and Turkish as a secondary language. In this instance, you can add the Turkish option to the detected language field as well as the Turkish option to the template language field, ensuring that any e-mails received in Turkish will receive an auto-reply in Turkish. If you set the template language to English, however, all automatic replies to emails in Turkish will still be in English. Your auto-replies to all emails that are received in a language you haven't selected will be sent in English, as selected by default.