Can I use the stock SMS/MMS app on an Android tablet without UMTS module?

I just got my Lenovo Thinkpad Tablet. It does not have a GSM/UMTS/3G module but there is an SMS/MMS icon. What is the purpose of this app? Does Android allow me to send and receive SMS/MMS over my Wifi Internet connection, or is it just a leftover? I am not interested *in any alternatives* to the stock app. I am more curious if it serves any purpose on a device without a UMTS module and if so, how to configure and use it. So the questions could also be phrased like: **What purpose serves the stock Android SMS app on an tablet without GSM/UMTS module?**