How to remove domain?

Hello Rizwanraza110,

Check out how to remove a custom domain with the steps below:

Stop using a custom domain on iCloud.com - Apple Support

"When you remove a custom email domain, you can’t send or receive email for any addresses at that domain in iCloud Mail. However, any email messages you sent and received before you removed the custom domain remain in your iCloud Mail account.

Stop using a domain you own

If you stop using a domain you own that you shared with other people, they also can’t send or receive email in iCloud Mail for any addresses they created.

1. On iCloud.com, click in the toolbar, then click Custom Email Domain.
2. Select the domain you want to stop using.
3. Scroll to the bottom, click “Stop using this domain,” then follow the onscreen instructions.
4. If you’re moving your domain to a new provider, make sure to do the following:

• Go to your domain registrar. Update the domain records to your new email provider and remove any iCloud related records.

• Set up any email addresses you want to continue using with your new provider."

Kind regards.