The Error "The from address does not match a verified Sender Identity" is Received via Email after Setting Up Sendgrid as the SMTP Provider

Last Updated: Sep 10, 2025

Overview

After setting up Sendgrid as the SMTP provider, passwordless emails are no longer being received. There are "Failed Notification" (type: fn) entries in the tenant logs with the following error description:

The from address does not match a verified Sender Identity. Mail cannot be sent until this error is resolved. Visit https://sendgrid.com/docs/for-developers/sending-email/sender-identity/ to see the Sender Identity requirements

Cause

In the Email passwordless connection settings, the 'From' email was set to <root@auth0.com>.

Solution

Navigate to Dashboard > Authentication > Passwordless, click on Email and add an email address that is registered as a Sender Identity with Sendgrid in the 'From' field.