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Apollo.io vs Glassbox: 2026 Comparison

Apollo.io Glassbox
Overview Apollo.io is an all-in-one sales intelligence and engagement platform with a database of over 275 million contacts. It combines prospecting, enrichment, and outreach automation in a single workflow. Glassbox captures 100% of digital sessions to provide complete visibility into customer journeys across web and mobile. It uses AI to automatically surface insights and identify experience issues.
Pricing Freemium ($0-99/mo) Paid (Custom)
Key Features
  • Contact database
  • email sequencing
  • dialer
  • LinkedIn integration
  • buying intent signals
  • data enrichment
  • CRM sync
  • lead scoring
  • Complete session capture
  • AI insights
  • struggle detection
  • journey mapping
  • mobile analytics
  • compliance recording
  • API analytics
  • augmented analytics
Pros
  • Massive contact database
  • Generous free tier
  • All-in-one platform
  • Good data accuracy
  • 100% session capture
  • Strong compliance features
  • Good AI insights
  • Cross-platform analytics
Cons
  • Data can be outdated for smaller companies
  • UI can feel cluttered
  • Email deliverability issues at scale
  • Enterprise pricing only
  • Complex deployment
  • Requires significant resources
  • Steep learning curve