Email Templates (Verification email) - Error configuring Redirect To URL

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Hi! How is everyone? Could you please help me with the following issue: when configuring the “Redirect To” input in the Email Verification email template, I get the error shown in the attached image, so I’m unable to save the changes. The URL I want to redirect users to is also configured in “Allowed Callback URLs”, as indicated in the documentation.

Error!
There must be a verified custom domain to perform this operation

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Hi @matiasj899

Thank you for reaching out to us!

All good on our end, hope your day went well!

It’s interesting that you are getting that specific error message, as custom domains should not be required, unless you are trying to configure your custom domain as the URL for the Redirect To. In this case, a verified email domain would be require for the redirection to be successful. Can you please verify in case you have configure a Custom Domain on your tenant and if it’s still pending verification?

Let us know, it should help further troubleshoot the issue.

Best regards,
Gerald

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Hi Gerald! Thanks for replying.
Answering your question: no, we don’t have a custom domain configured in our tenant.
To give you a bit more context, about a month ago we were able to configure the “Redirect To” field without any issues. Do you know if there has been any change related to this and what the reason might be?

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We use the Auth0 Deploy CLI to manage our Auth0 tenant configurations. Since last week, we’ve started encountering this error as well. We have never used a custom domain, and our email templates and related settings haven’t changed in years. This leads us to suspect that something may have changed on the Auth0 backend.

Here is the error message from the deployment pipeline:

2026-03-27T10:33:47.119Z - error: Problem running command import during stage processChanges when processing type emailTemplates
2026-03-27T10:33:47.119Z - error: There must be a verified custom domain to perform this operation

Here is the relevant part from our tenant configuration:

emailTemplates:
  - template: verify_email
    body: ./emailTemplates/verify_email.html
    enabled: true
    from: noreply@xxxxxxxx.com
    resultUrl: https://xxxx.xxxxxxxx.com/
    subject: Please verify your email
    syntax: liquid
    urlLifetimeInSeconds: 432000
  - template: welcome_email
    body: ./emailTemplates/welcome_email.html
    enabled: true
    from: noreply@xxxxxxxx.com
    subject: Welcome to {{ application.name }}!
    syntax: liquid
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