Invoice2go is a company that allows businesses to electronically send invoices. App users can send and receive payments through the invoice app. Avoid the hassle of downloading the app where a login is required. Transact allows businesses to send invoices without the obligation of downloading an app and creating an account. We send customers and clients their invoices via SMS. The text message will contain a link that will take them directly to their invoice. Customers are able to pay as soon as they click the link. If you are interested in a fast and efficient payment method, download the free invoice template.