Apollo.io

Free tier

The AI sales platform for smarter, faster revenue growth

Free tier available·All audiences·API available

Key strengths

240M+ contacts and 30M+ company B2B databaseAI agents for prospecting, outreach, and meeting booking200+ integrations with existing GTM toolsWaterfall enrichment for complete recordsDeliverability optimization (domain warming, inbox rotation, reputation monitoring)Built-in GDPR, CAN-SPAM, DNC compliance toolsEnterprise-grade security (SOC 2 Type II, ISO 27001)

Free tier + paid plans

San Francisco, USA

Founded 2015

Facts verified against apollo.io on Oct 19, 2026

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Apollo is a freemium AI-powered go-to-market (GTM) platform exposing a developer-accessible API alongside 200+ integrations — including Claude, ChatGPT, Gmail, and a Chrome Extension. It combines a 240M+ contact and 30M+ company B2B database with AI agents that automate prospecting, outreach sequencing, and meeting booking. Waterfall enrichment pipelines fill data gaps across multiple providers to maximize record completeness. Deliverability infrastructure includes domain warming, inbox rotation, and reputation monitoring. Security posture is enterprise-grade: SOC 2 Type II and ISO 27001 certified, with GDPR, CAN-SPAM, and DNC compliance tooling built in. Pricing spans four tiers (Free → Basic → Professional → Custom); credits are pooled at the team level, granted upfront per billing cycle, and do not roll over.

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