Below steps are required to override email address for all workflow notifications (please don’t try these steps on Production Environment, or else you will end up doing users work):

1. Login to Responsibility “Workflow Administrator Web Applications“
2. Choose “Workflow Manager” under “Oracle Applications Manager” menu
3. Ensure the “Notification Mailer” is running (Up), and then click on “Up” icon
4. Click on “View Details” button
5. Click on “Set Override Address” button
6. Change the email adrress at “Set Override Adress : <INSTANCE_NAME>: Workflow Notificaiton Mailer” page on “New Override Address” field.
7. Click on “Submit” button to apply the change.

Note: Please don’t leave the “New Override Address” field blank on Development Environment.