Hi. I am a marketing manager at event staffing agency. Our agency based in New York provides wait staff for hire and bartending services. My task is to increase the number of on-account clients. I think the best and the cheapest way is to find a base of catering and event planning companies, send them emails and call by phone after that. But where to find a fresh list of decision makers from catering and event planning companies? If someone recommends any tool or list it would be perfect.