I like how easy it was for me as well my team members, to create different campaigns with this tool! It's very intuitive which makes us feel comfortable using it in our daily workflows without any problems or issues at all!! Nothing really but great experience so far.
You can also get support from their sales force if you need help while creating your first campaign :). We are solving lead generation challenges of B2B companies by providing them high-quality prospects through personalized content marketing across multiple channels (email & web) - resulting into increased pipeline development and improved ROI.