Fix "Domain already claimed by another organization" error

Release a custom domain from another Mintlify project or request help when adding it fails because another project or organization already holds it.

When you try to add a custom domain that is registered to another Mintlify project, the dashboard or mint add-domain returns one of these errors:

• Domain is already in use by another deployment in your organization means the domain belongs to another project you can access.
• Domain is already claimed by another organization means the domain belongs to a project in a different Mintlify organization. This can happen when a trial account, unused organization, or project created with another work email still holds the domain.

Only one project can hold a custom domain at a time. Release the domain from the current project before you add it to the destination project.

If you can access the organization that holds the domain:

1. Sign in to the dashboard and switch to the organization that holds the domain.
2. Open the Custom domain setup page for the project that holds the domain.
3. Click the remove icon next to the domain and confirm the removal.
4. Switch to the destination organization and add the domain from its Custom domain setup page.

Your DNS records remain valid as long as the CNAME still points to cname.mintlify.builders. If you also want to retire the old project, delete it from the Danger zone section of the Organization settings page. See Delete a project.

If you cannot access the organization that holds the domain, email [support@mintlify.com](mailto:support@mintlify.com) with proof that you own it. This can happen when the organization belongs to a former employee, uses a personal email you no longer access, or was abandoned without releasing the domain.

Include:

• The custom domain, like docs.example.com.
• The destination organization and project where you want to add it, formatted as app.mintlify.com/<your-org>/<your-project>.
• Any email addresses or organization names that might hold the domain.
• Proof that you control the domain, such as a screenshot from your DNS provider's admin console. Support may instead ask you to add a verification TXT record.

After support releases the domain, add it from the dashboard or with mint add-domain.

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