I used QuinStreet when I was a member of the marketing team of a company that was acquired. They were excellent at what they did. Their system was flexible, easy to use, and they built their own database and their own analytic system. They were very responsive to our technical questions. Nothing about the service. They didn't offer any training, and their support staff did not seem to be able to answer questions. If you want to do some heavy customization, it would be nice to have more training and support from your provider, but they can get you up and running quickly. They helped us build a database of our existing customers, allowing us to create targeted digital campaigns. The ease of use was key! I am not very tech savvy, but this program made it easy to understand. It's so quick that you can start using it right away without having to go through training or figure out how everything works first. As with any new software there are some quirks that need tweaking, however that seemed like normal growing pains. We have been able to increase our email list by over 20% in just under 2 weeks since we started implementing the various tools from QuinStreet.