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System for Clay to Filter Out Companies Not in HubSpot

ยท
ยท

Hello Looking at this list https://app.clay.com/workspaces/33232/tables/t_jMuGjG4rzNCZ/views/gv_qCYROv6qrKTp supposed to show companies that aren't on our hubspot, it appears that some of them are already in our CRM but weren't detected by Clay (ie - dhl.ru doesn't exist in Hubspot, but dhl.com does). Since I don't want to create any duplicates, do you know how I can create a system for Clay to filter out these companies? Thanks