Accounts Payable does not accept paper invoices set via mail. All invoices are to be delivered to apinvoices@gatech.edu. All invoices are to reference a valid PO and must be in PDF format. You can include multiple attachments, but only one invoice per attachment should be sent as an email attachment to apinvoices@gatech.edu, to be electronically scanned into our imaging system. Contact the person that placed the order to secure a PO # prior to submission of the invoice.