Change AI Language & Tone
The app interface language and the language used for summaries and to-dos are separate settings. Recent releases improved language detection and regeneration after a setting changes.
App interface language
- Open Settings → Language.
- Under App, choose System to follow the device, or select a language.
- Reopen Filo if the interface has not refreshed.
Summary and to-do language
- In Settings → Language, open Summary, To-do.
- Choose Auto to follow the email body’s primary language, or choose a specific output language.
- Generate a new summary to use the selected setting. Auto does not mean the app or device language.
Update an existing summary
Changing the language does not immediately rewrite every saved summary. Open the message and use the prompt to regenerate when it appears.
On Desktop, right-click the summary card and choose Regenerate. On mobile, use the summary’s available regeneration action. Review the new result before relying on it.
Writing tone
Use Settings → Writing Style to choose how AI-generated drafts and replies sound. See the Writing Style guide for examples. Summary language and writing style serve different purposes.