Apollo.io
The AI prospecting platform: 275M B2B contacts + automated multi-channel outreach.
Apollo.io has become in 2026 the most-used B2B prospecting platform among sales teams, merging three historically separate tools: a 275-million B2B contact database (ZoomInfo-equivalent), a sequenced outreach tool (Outreach.io-equivalent), and an AI copilot that writes emails and auto-qualifies leads.
Apollo's AI (powered by GPT-4o) personalises each email based on LinkedIn profile, company news, and behavioural triggers (site visit, previous email open). The Power Dialer embeds phone calling directly in the browser with AI call transcription.
Free tier: 50 email credits/month; Basic at $49/mo unlocks unlimited enrichment; Pro at $79/mo adds A/B sequences; Organization at $119/mo includes advanced analytics and CRM integrations.
Features
Key features
- 275M B2B contacts: largest database on the market.
- AI outreach: personalised emails at scale.
- Power Dialer: embedded calling + AI transcription.
- Multi-channel sequences: email + LinkedIn + phone.
- AI lead scoring: automatic qualification.
- Integrations: Salesforce, HubSpot, Pipedrive.