Customer outreach through Churn Buster is fully translatable.
Generally your Churn Buster emails should match the language used on your website and other communications.
If customers use your website in English but use translator tools, avoid the mistake of reaching out to them in the wrong language and let them use translator tools for your outreach as well.
Assuming language preferences based on IP address or browser settings can backfire, particularly if customers are accustomed to your business communicating in a specific language.