For Customer Voice Standard accounts, emails will come from the email email@example.com. The client's business name will be automatically substituted for “businessname.” Clients may customize their "sent-from" email domain with Customer Voice Pro. Do this by clicking "Edit Send from email" when editing an email template.
After upgrading to the Pro edition, the setting can be configured in the Business App > Settings > Email Configuration:
To edit send from information, domain validation is not required. You can just change the send from information to be able to send review requests from that email ID.