Abstract: Techniques described herein are directed to, among other things, enabling customers to order items from a merchant and initiate payment for the items via electronic messages sent from customer devices. For instance, when a first network of the merchant is inoperable, or when the merchant is operating at a location where a first network is unavailable, a customer and a merchant may communicate using electronic messages sent over a second network and may request to initiate payment for items via an electronic message sent over the second network.