The interface is very simple to use, easy to navigate, and has many options for customization. I have had no problems with this software so far. It's quick and efficient way of sending out documents. We've been able to reduce our paper usage by 90% in just one year! There are some features that we would like to see added but it seems as though they will be coming soon. If you're looking for an affordable solution to your document distribution needs then look into using crosbyfax.com. Our organization uses crosbyfax for all internal communications and document distribution.