When invoices are created, the delivery preference is defaulted to Email. The Set Billing Email and Print Flags tool allows you to set or unset the email/print checkbox on ALL active Scheduled Billing records, as well as on ALL open invoices. 

1. Click Setup in the left-hand navigation panel.
2. Click Set Invoice Delivery Preference in the Data Tools section. 
3. On the Update All Scheduled Billing and Open Invoices:Checking the boxes will enable the Email/Print invoice setting on all scheduled billing and open invoices. NOT checking the box will uncheck the Email/Print invoice setting.

   

4. Click Run. 
5. Click OK on the Warning dialog box. All Invoice Delivery Preferences will be updated.