I heard it from my friend. We both sell on eBay, and shipping many package every day. The software support connecting my eBay shop and ship directly, no need to create carriers account, which you know quite tiresome. And I can also get huge discount shipping by it. It save me much shipping fee and time. Its system is simple, easy to use, and quite smart. It can remember all my use habit. It's customer service is timely and kindly. I almost can find them anytime! So I am willing to share the experience with other online sellers, It is really fit our needs.