Case Study: Leadium triples annual revenue with Apollo

How Leadium 3x Annual Revenue Using Apollo’s Open API

Leadium, a B2B lead generation agency founded by Kevin Warner, needed a scalable way to run outbound sales without redundant tools or unreliable data. To support growth, the team turned to Apollo’s open API and data platform to create a more efficient, centralized system that could serve both internal workflows and client needs.

Apollo helped Leadium replace ZoomInfo and Salesforce, use Apollo as its single source of truth, and integrate with tools like Nooks and Webflow to automate dialing, enrichment, segmentation, and task management. The result was a 40% reduction in time to launch, a 5x increase in meetings booked via phone, and 3x annual revenue growth, all without sacrificing efficiency.

Leadium

Kevin Warner

Founder and CEO