How to Change the "From" Email Address for Supplier Spend Authorization Notifications?

We would like to configure the "From" email address for the Supplier Spend Authorization Notification email, changing it from the generic Oracle email to our corporate email. The current "From" address has caused confusion for many suppliers, as it appears similar to a spam email rather than one from our corporation. We would like to replace it with a corporate email address, such as noreply@xxxx.com.