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Apollo.io

Best for B2B prospecting with massive contact database

Apollo.io provides access to over 275 million contacts and 73 million companies, making it one of the largest B2B prospecting databases available with extensive coverage across industries and geographies. AI-powered lead scoring analyzes firmographic data, technographic signals, and engagement behavior to predict which prospects are most likely to convert, helping sales teams prioritize their outreach efforts. Automated multi-channel sequences orchestrate coordinated touchpoints across email, LinkedIn, and phone, with AI personalizing message content based on prospect attributes and behavior. The AI email writer generates personalized outreach messages incorporating prospect details like recent funding, job changes, or company news, dramatically reducing time spent on message composition. Intent signals identify companies actively researching solutions in your category, providing sales teams with perfect timing for outreach when prospects are in buying mode. Buying committee mapping reveals all stakeholders involved in purchase decisions, ensuring you engage the complete decision-making unit rather than single contacts. Native CRM synchronization with Salesforce and HubSpot keeps contact data, activities, and engagement history in sync bi-directionally.

AI Models

Apollo AIML-based lead scoringNLP for email generation

Key Features

  • 275M+ contacts and 73M+ companies database
  • AI-powered lead scoring with conversion prediction
  • Multi-channel sequences: email, LinkedIn, phone
  • AI email writer with personalization from prospect data
  • Intent signals identifying active buyers
  • Buying committee mapping for complete stakeholder coverage
  • CRM sync with Salesforce and HubSpot
  • Technographic and firmographic filtering

Integrations

SalesforceHubSpotLinkedInGmailOutlookZapier

Pricing

Free$0/month

Unlimited email credits, 10 mobile credits, basic sequences

Plus$49/user/month

AI email writer, advanced sequences, intent data

Professional$79/user/month

Buying committee, advanced analytics, priority support

Pros & Cons

Pros

  • Massive contact database reduces manual prospecting
  • Intent signals provide perfect outreach timing
  • Free tier offers substantial value for small teams

Cons

  • Data accuracy varies across database segments
  • Email credits can run out quickly on lower tiers
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