Apollo.io is the right starting point for US outbound teams running under 1,000 new contacts per month on an email-first motion. It is not the right tool for phone-first outbound at scale, non-US contacts, or agencies where data accuracy above 80 percent is a deliverability requirement. Apollo claims 97 percent accuracy. Independent testing across US SDR teams documents 65 to 70 percent real-world. One in three contacts you pull may bounce.

ZoomInfo pricing starts at $14,995 per year and the sales page does not exist. Every quote is custom, every deal goes through a rep, and two agencies with identical use cases can receive quotes that differ by $20,000. The median agency contract per Vendr’s 2026 verified purchase data lands at $31,875 annually. The real cost after seats, intent data, credit overages, and the first renewal typically runs $30,000 to $60,000.