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Apollo.io
Sales intelligence and engagement platform with AI-powered lead discovery, contact data enrichment, and outreach automation.
What is Apollo.io?
Sales Intelligence and Engagement Platform
Apollo.io is a comprehensive sales intelligence and engagement platform that combines a massive B2B contact database with AI-powered outreach automation. Sales teams use Apollo to discover prospects, enrich contact data, and engage leads through automated email sequences — all within a single platform that replaces multiple point solutions.
Data + Engagement in One Platform
Apollo's database contains over 270 million contacts and 60 million companies with verified email addresses, phone numbers, and firmographic data. Its AI enrichment layer keeps contact data current and adds predictive signals about buying intent. The engagement tools enable multi-step email and phone sequences with AI-assisted personalization, tracking, and optimization.
- 270M+ B2B contacts with verified contact data
- AI-powered lead scoring and intent detection
- Email sequence automation with AI personalization
- LinkedIn integration for prospecting and outreach
The All-in-One Prospecting Solution
Apollo is popular with SDR and BDR teams at growth-stage and mid-market companies who need both data and engagement tools but can't justify separate subscriptions to ZoomInfo and Outreach. Its freemium model makes it one of the most accessible enterprise-grade sales intelligence platforms available.
Key Features
270M+ verified contacts and 60M companies with email, phone, and firmographic data.
Scores and prioritizes prospects by fit and predicted buying intent.
Automated multi-step email sequences with AI-assisted personalization.
Find, enrich, and engage prospects via LinkedIn integration.
Track email performance, sequence metrics, and prospecting ROI.
Who Uses Apollo.io?
Find precisely targeted B2B contacts matching ideal customer profiles.
Run automated prospecting sequences with personalized emails at scale.
Map out total addressable markets and competitive landscapes with company data.
Enrich CRM contacts with verified data to improve marketing and sales targeting.
Pros & Cons
✅ Pros
- Combines data and engagement tools in one platform — significant cost saving vs two tools
- One of the largest and most accurate B2B contact databases available
- Freemium model provides genuine value before requiring payment
- AI intent data helps prioritize outreach for the best-fit prospects
❌ Cons
- Data accuracy varies by region — strongest in North America
- Email deliverability can suffer with heavy outbound automation
- Free plan is limited — meaningful prospecting requires paid plan
- Can encourage spray-and-pray outbound at the expense of quality
Apollo.io Pricing
Free
- 10 email credits/month
- Basic prospecting
- Limited sequences
- CRM integrations
Basic
- 1,000 credits/month
- Full sequences
- AI scoring
- LinkedIn integration
Professional
- Unlimited credits
- Advanced AI features
- All integrations
- Priority support
- API access
Apollo.io earns a 3.6/5 rating from our editorial team. Its generous free tier lets you explore core features before upgrading, making it a low-risk choice for individuals and teams. Standout strengths include combines data and engagement tools in one platform — significant cost saving vs two tools and one of the largest and most accurate b2b contact databases available.
Get Started with Apollo.io →