Invoices can be sent to multiple email addresses on team accounts, so if they need to go directly to the credit card holder or a billing department for your company you can now enter this into the system as a team administrator.
Go to your TEAM tab and click on the gear icon to get to the Master Config settings. ( or My account/Master config)
Then go to Manage Notifications.
In the section for invoices, you can enter one email address per line so that multiple users can get the invoices.