... and returned to Seller by e -mail, fax or courier.F. Seller, check and if you agree, sign ... returned tothe buyer via e -mail, fax or courier.G. Buyer verifies that the contract is approved, signed ... Seller to the Buyer viae-mail, fax or courier, the Purchaser shall issue within five workingdays of ... sent by the buyer by fax, mail or courier.L. After receiving first swift copy for procurement/commitment ...