Paperwork In order to be paid promptly, be sure to use one of the following methods to send us invoices: Preferred Method: Upload Click here to upload paperwork Alternate Method: Email Click here to email paperwork Fax Fax paperwork to: 888-260-4580 If you have no other method but to mail paperwork, be sure you DO NOT MAIL ORIGINALS (unless instructed). Mail Attention: Do not mail originals (unless instructed) Listo Services 817 Ohare Parkway Medford, OR 97504