Have the Confirmation Emails be from the original sender, not from Titan licensee

Be able to have the Confirmation Emails that are sent to the Signer, show that they are coming from the actual SF user who sent the initial email (with the Titan Sign doc). 

*We are able to get the initial email (with the
Titan Sign doc) sent to the signer showing it coming from the sender (actual user who sent the email in Salesforce) but the Confirmation Emails that were sent after the Titan Sign doc was signed and completed, show the email(s) coming from our Titan Licensee and NOT from the actual sender.