Apollo.io provides an all-in-one sales intelligence and engagement platform that combines accurate B2B contact data with multi-channel outreach tools, enabling sales teams to find, engage, and close deals more efficiently at competitive pricing.
Last updated Feb 8, 2026
Leading sales intelligence platform competing with ZoomInfo and LinkedIn Sales Navigator, known for integrated data and engagement capabilities
Apollo.io is a sales intelligence and engagement platform that combines a B2B database of over 275 million contacts and 73 million companies with sales engagement tools. Founded in 2015, the company provides end-to-end solutions for prospecting, outreach, and deal management, enabling sales and marketing teams to identify ideal customers, engage them through multiple channels, and track interactions throughout the sales cycle. While not strictly an AdTech company, Apollo operates in the adjacent MarTech and sales technology space, providing data and engagement capabilities that support go-to-market strategies. Apollo.io has established itself as a significant player in the sales intelligence market, competing with established vendors like ZoomInfo, LinkedIn Sales Navigator, and Outreach. The platform differentiates itself by offering an integrated solution that combines data intelligence with engagement tools at competitive pricing, making it accessible to both SMBs and enterprise customers. The company has experienced rapid growth and is backed by notable investors including Tribe Capital, Nexus Venture Partners, and Y Combinator.
Access to 275+ million contacts and 73+ million companies with detailed firmographic and technographic data
Multi-channel outreach sequences including email, phone, and LinkedIn with automation capabilities
Real-time data enrichment and buyer intent signals to identify and prioritize prospects
Performance tracking, pipeline analytics, and team activity dashboards
Browser extension for prospecting and data enrichment while browsing LinkedIn and company websites