Copilot features, such as Summary and Create Draft, generate content based on the UI language. Additionally, they can now be translated into many languages. The last used language is stored as Recent but not as Default.

Use case: We support 5 UI languages for our system (EN, GE, FR, SP, IT). However, in the Netherlands, their UI language is EN or FR, but most of their emails and cases are in Dutch. To use Copilot features, users have to manually change the language for all their emails.

This issue is relevant for all other countries where the UI language does not match the most used communication language.

I suggest that users should be able to set their Default language for Copilot-generated content.