The Settings view

Use these settings to specify which buyers are associated with the email input address.

To access this view in Admin Center: Click an email address in the Input addresses list or click ADD in the Email input view. Then select Use email subject in the Buyer setting, and click Settings.

This view is only available is buyer classification is enabled.

Use these settings to specify which buyers are associated with the email input address:

All buyers (current and future)	When selected, the current email address can route invoices to all buyers, including new buyers that you create in the future. If you do not select this option, you must specify buyers in the list at the bottom of the dialog.
Selected buyers	Restricts the available buyers of the current email address to the buyers you select in the list. You cannot select more than 1,000 buyers.