... signedthe FCO as contract draft for checking with Our bank by e-mail, fax orcourier.D. The seller sends draft contract to ... the Buyer via e -mail, fax or courier.E. Buyer verified, corrected and returned to Seller by e -mail, fax or courier ... . Within three days the contract must be returned to Seller by e-mail, fax or courier.I. After the contract sent to ...