FitzMartin has been working with Occupational Health Dynamics (OHD) since 2015. A leader in the occ health industry, OHD provides law, fire, industrial and occ health industries with fit testing devices. OHD had a large database of contacts that no one was actively following up on, generated from trade shows, referrals and marketing over the years. As we got OHD up and running in HubSpot, we didn’t want to upload the entire database without knowing if these contacts were still valid, or in simpler terms, marketing to a dead list. So our challenge was to find a way to validate and confirm the list.