> ## Documentation Index
> Fetch the complete documentation index at: https://docs.getthread.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Multi-language support in Messenger

> Which languages Thread supports across Messenger, Inbox, Teams and Slack, and how to set a default language of English or French per workspace or per customer.

Messaging works in **practically any language** — your customers and technicians can talk to each
other however they like. What varies is the **interface** and the **bot prompts**, which have
narrower support.

## What's supported where

| Platform                              | User interface                                                                       | Bot prompts     | Messaging    |
| ------------------------------------- | ------------------------------------------------------------------------------------ | --------------- | ------------ |
| **Messenger**                         | English, French                                                                      | English, French | Any language |
| **Inbox**                             | English only                                                                         | English only    | Any language |
| **Microsoft Teams** (customer-facing) | Teams itself supports many languages; Messenger in Teams supports English and French | English, French | Any language |
| **Microsoft Teams** (MSP-facing)      | Teams itself supports many languages; the MSP bot is English only                    | English only    | Any language |
| **Slack** (customer-facing)           | Slack itself supports many languages; Messenger in Slack is English only             | English only    | Any language |
| **Slack** (MSP-facing)                | Slack itself supports many languages; the MSP bot is English only                    | English only    | Any language |

<Note>
  Interface and bot localisation is **English and French only**, and only in standalone Messenger
  and Messenger in Teams. Slack is not supported for language switching today.
</Note>

## Set the default language

Language follows Thread's usual hierarchy: set a default for everyone, then override per customer
where you need something different.

<Steps>
  <Step title="Set the workspace default">
    In the Admin Panel go to **Messenger** and choose the default language for all customers. It's English unless you change it. Switching to French updates both the interface and the bot prompts.

    <Frame>
      <img src="https://mintcdn.com/thread/JnKK5tu2s9w9nRTI/images/26fe572b-image.png?fit=max&auto=format&n=JnKK5tu2s9w9nRTI&q=85&s=fac682438d465301be73e82b00a51380" alt="Default language selector on the Messenger settings page in the Thread Admin Panel" width="1246" height="166" data-path="images/26fe572b-image.png" />
    </Frame>
  </Step>

  <Step title="Check the bot prompts">
    Click **Override initial bot prompts** to see the prompts in the selected language.

    <Frame>
      <img src="https://mintcdn.com/thread/JnKK5tu2s9w9nRTI/images/0413607e-image.png?fit=max&auto=format&n=JnKK5tu2s9w9nRTI&q=85&s=273809cb5c64170fe962b5c01db138ed" alt="Initial bot prompts shown in French after switching the default language" width="1310" height="1536" data-path="images/0413607e-image.png" />
    </Frame>
  </Step>

  <Step title="Override per customer">
    Set a different language on an individual customer where their default differs from yours, so you can tailor the experience client by client.
  </Step>
</Steps>

## What the customer sees

In standalone Messenger:

<Frame>
  <img src="https://mintcdn.com/thread/ei0wGC-D4uJZ3qXV/images/a91281d9-image.png?fit=max&auto=format&n=ei0wGC-D4uJZ3qXV&q=85&s=1e3f5e00084f48bbcb447582dde8d381" alt="End customer experience in Messenger with the interface in French" width="770" height="1132" data-path="images/a91281d9-image.png" />
</Frame>

In Microsoft Teams:

<Frame>
  <img src="https://mintcdn.com/thread/JnKK5tu2s9w9nRTI/images/1f839a7e-image.png?fit=max&auto=format&n=JnKK5tu2s9w9nRTI&q=85&s=880703d70a749417dcd6dc6f0e99051c" alt="End customer experience in Microsoft Teams with Messenger in French" width="1992" height="1756" data-path="images/1f839a7e-image.png" />
</Frame>

## Next step

Tune the rest of the customer-facing experience in [Messenger settings](/inbox/messenger), or set
per-customer behaviour in [configurations in Messenger](/messenger/configurations-in-messenger).


## Related topics

- [Cloning a Legacy Teams App](/messenger/cloning-a-legacy-teams-app.md)
- [Multilingual Reply](/skill-library/communication/multilingual-reply.md)
- [Customer Value Messaging for AI-Powered Support](/get-started/talking-to-customers-about-ai-powered-support-thread-customer-value-messaging.md)