Clay

Clay is a data enrichment and outreach platform that lets sales teams pull contact and company data from 100+ providers (Clearbit, Apollo, LinkedIn, etc.) through a single interface. It uses a waterfall enrichment approach — querying multiple data sources in sequence to maximize coverage. Clay's AI agent writes personalized messages using the enriched data, making each outreach feel hand-crafted at scale. The spreadsheet-like interface makes building complex enrichment workflows intuitive. It's become the go-to tool for RevOps teams building sophisticated outbound systems.