Yes, you can configure a custom 404 page for your domain. This can be done both when adding a new domain and when updating an existing one. During domain creation, simply specify the custom 404 page in the New domain window. If the domain has already been added, open the edit option by clicking the icon next to the domain, update the Custom 404 page field in the Editing domain window, and save your changes. The update is applied without affecting the domain verification status.
| Adding new domain | Editing existing domain |
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For more information, see How do I add a custom domain?