Apollo.io
B2B sales intelligence platform with 275M+ contacts, AI email sequences, LinkedIn prospecting, and a built-in dialer.
Apollo.io is the most comprehensive B2B sales intelligence and engagement platform available, combining a 275M+ contact database with outreach automation, AI email writing, and a built-in sales dialer. Sales teams use Apollo to find ideal prospects by filtering on 65+ attributes (company size, tech stack, funding round, job title, seniority), enrich contact data, verify emails, write personalized sequences with AI, and track engagement - all in one tool. The Chrome extension enriches LinkedIn profiles and company pages with Apollo data on the fly. Apollo's breadth makes it the most efficient single-tool replacement for ZoomInfo + Outreach + Dialpad for SMB and mid-market sales teams.
Key Features
- 275M+ contacts and 60M+ companies searchable by 65+ attributes (title, tech stack, funding, etc.)
- AI email writer - generates personalized cold outreach from contact and company context
- Email sequences - multi-step automated outreach with open/click tracking
- LinkedIn Chrome extension - enriches profiles with verified contact data and exports to sequences
- Built-in sales dialer - make calls directly from Apollo with auto-logging
- Email verification - reduces bounce rates and protects sender reputation
- CRM sync - bi-directional integration with Salesforce and HubSpot
Use Cases
- SDRs building targeted prospect lists by company size, industry, tech stack, and growth signals
- Founders doing founder-led sales by finding and contacting decision-makers directly
- Recruiters sourcing and reaching out to passive candidates at scale
- Marketing teams building account-based marketing lists for ad targeting and events
- RevOps teams enriching existing CRM records with missing contact information
- Agencies managing outbound prospecting for multiple client accounts
Pros
- 275M+ contact database rivals ZoomInfo at a fraction of the price - best data-per-dollar in the market
- All-in-one: database + email sequences + dialer + LinkedIn extension eliminates multiple tool subscriptions
- Generous free plan (limited monthly credits) lets small teams prospect without immediate payment
Cons
- Data accuracy on mobile numbers and APAC contacts can be inconsistent
- Email deliverability varies - Apollo sequences work best combined with a warmed sending domain
- Professional plan at $99/user/month adds up for larger SDR teams vs. specialized point solutions
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