The team at stack are very professional in their work ethic and approach to business.
They have been nothing but helpful from day one when we first started working with them. I would highly recommend anyone looking into using this service as they do an amazing job! Nothing so far apart from what you'd expect from any other vendor out there - great people who care about your success and making sure that everything goes well. We've seen some really positive results from our campaign which has led to increased customer satisfaction and better overall conversions.