Salesforce System Administrator Email Change to Free Domain Restrictions

Salesforce Support cannot update a System Administrator's email address to a free, publicly available email domain. The new email address must belong to a domain owned and controlled by your organization, as Salesforce is required to verify domain ownership for security purposes.

When requesting an email change for the sole System Administrator of your Salesforce org through Salesforce Support, the request must be made using a domain owned by your organization. This is necessary because Salesforce must verify ownership information for the new domain to ensure security. For security reasons, changes to free email addresses or domains not owned by the customer cannot be processed.