Send an invoice to a customer with US Mail. Mailing an invoice is useful when you want to send an invoice to a customer that is not in the BILL network.
Customer billing address is required for mailing an invoice.
billAddressCountry must be
BILL prints the invoice and mails it to the customer. The expected delivery date is 3-5 business days. Keep your organization address current in case the mail cannot be delivered to the customer.
The user that mails an invoice with
/MailInvoice.json must have the role permissions for managing invoices. In addition, free accounts receivables account users cannot use this endpoint.