Yes — you can limit your help centre to people who sign in with a work email on domains you approve. Visitors enter their email, get a magic link, and only addresses on your allowed list get through.

## Prerequisites

- You need access to the project's **Settings** page

## More details

### Step 1: Open the Visibility settings

From your project, open **Settings** in the sidebar. Under Help centre, click **Visibility**.

### Step 2: Turn on domain-restricted access

Under **Who can access your help centre**, select **Restricted to specific email domains**. In **Allowed email domains**, enter the domains you want to allow, separated by commas (for example, `acme.com, acme.co.uk`).

### Step 3: Save your changes

Click **Save visibility**. Visitors who aren't on an approved domain will see a message asking them to use their work email.

![Save your changes](https://help.supportpages.io/rails/active_storage/blobs/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NTA5NywicHVyIjoiYmxvYl9pZCJ9fQ==--0852b825528b75f5ffe3168124a60298b8246c56/step_2.png)

## Tips

- Domain matching is case-insensitive — `Example.com` and `example.com` are treated the same.
- Visitors on approved domains receive a secure sign-in link by email; the link expires after 15 minutes.

## Summary

Domain-restricted visibility keeps your help centre private while still letting customers or employees on your approved domains read your docs.