Please send invoices to the Bill-to on your Purchase Order unless otherwise stated on the PO or other arrangements have been made with Donnelley Financial. For the email Bill-to: Email invoices and credit memos to dfscoinvoices@dfinsolutions.com as attachments. Only one invoice or credit memo per attachment. Multiple attachments are allowed in one email. Attachments can be PDF, TIFF, MS Word, or MS Excel files. Each invoice or credit memo can reference only one PO, but it must reference a PO. Do not send duplicate invoices or credit memos. Do not send comments in the body of the email. The email address is not monitored so any comments in the email will go unnoticed. Do not send invoices and credit memos to a different email address or by fax or mail. Send any inquiries about an invoice, credit memo or payment to apinvoices@dfinsolutions.com or PO Box 281588, Nashville, TN 37228, not the Donnelley Financial invoice email address. If emailing invoices as attachments is absolutely not an option, then mail invoices to PO Box 282448, Nashville, TN 37228. For the regular mail Bill-to's: Mail invoices and credit memos to the street address on the Purchase Order. Each invoice or credit memo can reference only one PO, but it must reference a PO. Do not send duplicate invoices or credit memos. Do not send invoices and credit memos to the Donnelley Financial invoice email address or by fax. Send any inquiries about an invoice, credit memo or payment to apinvoices@dfinsolutions.com or PO Box 281588, Nashville, TN 37228, not the Donnelley Financial invoice email address.