> This page is part of the [Customer.io documentation](https://docs.customer.io). For the complete index, see [llms.txt](https://docs.customer.io/llms.txt).
> Last updated: July 10, 2026

# Delete an email sending domain

You can delete a sending domain when it’s not in use.

1.  Go to [*Workspace Settings > Email*](https://fly.customer.io/workspaces/last/settings/actions/email/sending_domains).
2.  Click **Show Records** to the right of the domain you want to delete.
    
    [![In email settings, the tab sending domains is selected. A domain is on the left. The button Show Records is on the right.](https://docs.customer.io/images/delete-domain-2.png)](#236fd31332fb9aac2118b55ea74638f2-lightbox)
    
3.  Click **Delete domain**.
4.  Confirm your action.

The domain will no longer appear in settings and the corresponding `From` addresses will not be available for emails.

### Remove a domain from messages

If any email uses the `From` address for the domain you want to delete, you won’t be able to delete the domain. You can either:

*   Change the `From` address to one belonging to a differenrt sending domain.
*   Delete the email using the `From` address.

To see which messages use your `From` address, click the three dots   next to it and select **View usage**.

[![In email settings, the tab sending domains is selected. A domain is on the left. A from address is in the middle. The three dots are clicked to the right of the from address, and it shows a menu of three options: View usage, Edit, and Delete.](https://docs.customer.io/images/delete-domain.png)](#248fcd47cdfa5df01dee9bbf7d52d4b1-lightbox)

You’ll land on *Content > Message Library* where results are filtered to messages using your `From` address.

[![Content is selected at the bottom of the left hand vertical navigation. The page is titled Message Library. The top search bar contains an email address. The table underneath is filtered to a list of messages that use this address. The address is highlighted yellow on each message.](https://docs.customer.io/images/delete-domain-1.png)](#57d0c2442d198e533ae635e057dcce45-lightbox)

*   *   *   [Remove a domain from messages](#remove-a-domain-from-messages)

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