An email shows the mailing history, but that is usually not the case with SMS. For example, if you are about to inspect three cars and receive a SMS per car to confirm the bookings. How does the system know which one you book - or cancel? Either you answer immediately or a month later, Smart Reply Path keeps track of which SMS the response is associated with. Smart Reply Path can also be used for vouchers, ticket booking, etc. You can choose whether to respond to an SMS only once or more times.