Apollo's homepage, read on 2026-10-06, says it has 240M+ contacts and 30M+ companies and that over 600,000 companies use it. Those are Apollo's own figures; we did not check them. It describes its data as your own data, Apollo's proprietary data and third-party signals in one place.
On signals, Apollo's data page lists third-party intent data, job changes, new hires, funding rounds, company news, website visitor tracking and custom AI signals, across 65+ filters. On AI, its homepage says agents research accounts, build lists, write messages, follow up and book meetings, and its intelligence page says Apollo learns your products, ICP, messaging and playbooks. Professional and Organization add AI scoring.
On sending, Apollo's pricing FAQ says email campaigns are included on every account, and free accounts can connect Gmail only. Its execution page lists a built-in dialer with automatic call logging. The same FAQ says Apollo is built to work for companies of all sizes.