I like how easy it is to send messages across different pabx systems in a secure manner that can be tracked by the recipient as well which makes them feel more comfortable while sending important information such as bill payment reminders etc. It's free so you don't have any other costs or hidden fees associated with this product. Sending multiple bills at once from one account has never been easier! The fact that it is easy to use and integrate into other software packages without having to learn new programs makes this program very user friendly. It also has great customer service support if you need help at anytime. I have no complaints about this product. This is an excellent tool for any business that needs messaging services. We are able to communicate easily with our clients through this system as well as send out messages when needed.