Mailbox Settings: Language Configuration

Updated 2026-08-04·2 min read

The Language sub-tab of Mailbox Settings controls which languages ReplyFabric processes email in for this mailbox, and which one is the default.

Language Configuration

Mailboxes inherit an organization-wide default language unless overridden per-mailbox. The Default Language is tagged Primary — "the primary language for email processing and new categories. It's the first language in your supported languages list."

Language Configuration overview, showing the organization default and current Default Language

Add Language Support

Adding a language here does more than add it to the list:

Adding a language automatically creates categories for that language, based on your existing category structure.

This is the mechanism behind the per-language sections you'll see throughout Category Management — every category gets its own set of Intents, FAQs, and Knowledge Base documents per language once that language is added here. See Category Management: Understanding Intents, Category Management: FAQs, and Category Management: Knowledge Base.

Click Save Language Settings to commit the change. A summary at the bottom recaps your default language, total language count, and every configured language.

Move a newly added language to the top of Supported Languages with the arrow buttons and it becomes the mailbox's new Default (Primary), with the previous default demoted below it:

Language Configuration after adding French and promoting it to Primary, with English demoted to second place in Supported Languages

What's next

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