About Apollo.io
Apollo.io is a sales intelligence and engagement platform founded in 2015 by Tim Zheng and Ray Li. The platform combines one of the largest B2B contact databases - with over 275 million contacts and 73 million companies - with built-in tools for outreach automation, call dialing, email sequencing, and pipeline management.
Trusted by more than 160,000 companies worldwide, Apollo serves teams ranging from solo SDRs at early-stage startups to enterprise revenue organizations. The company is headquartered in San Francisco, CA and is a Y Combinator alumnus.
Products & Services
Access 275M+ verified contacts and 73M+ companies. Filter by technographics, funding, revenue, job postings, and more to build targeted prospect lists.
Multi-channel sequences combining email, calls, LinkedIn, and tasks. Automate follow-ups and A/B test messaging at scale.
AI-powered email writing, personalization, and message analysis built on millions of engagement data points. Generate targeted copy in seconds.
Click-to-call with CRM logging, call recordings, and transcription. Queue multiple calls simultaneously to connect with 100+ prospects per hour.
Automatically enrich existing CRM records with verified contact information, company details, and technographics for data accuracy and completeness.
Track deals through your pipeline with conversation intelligence, meeting scheduling, and analytics to improve forecast accuracy.
Apollo.io Integrations
Apollo.io integrates with your existing sales and marketing stack via native bi-directional syncs:
Customers & Case Studies
Top Customers
Customer Success Stories
Generated $750K+ pipeline through Apollo's automated lead engine targeting enterprise accounts.
Boosted sales-qualified leads by 70% with 50% year-over-year growth using Apollo for prospecting.
Boosted meetings by 20%, saving each rep 5 hours per week and booking 20 extra meetings per month.
Top teams increased meetings by 75% and revenue by 200% using Apollo's sales intelligence.
Case Studies by Industry
Pain Points & Solutions
Replaces manual research with AI-powered filters across 275M+ contacts. Teams build targeted lists in minutes instead of hours.
Automates email, phone, and LinkedIn sequences so reps focus on selling, not sending. Parallel dialer connects 100+ calls per hour.
Enrichment keeps CRM records up-to-date with verified contact info, company details, and technographics - reducing bounce rates and wasted effort.
Consolidates data provider, outreach platform, dialer, enrichment, and CRM into one platform, saving teams thousands per year.
AI-powered personalization and intent signals help reps reach the right people at the right time. Teams report 75% more meetings booked.
Pre-built templates, shared sequences, and playbook automations get new reps ramped and producing in days instead of weeks.
How Apollo.io Looks on AI Platforms
Apollo.io's score is calculated based on: website structure and schema markup, content accessibility for LLMs, clarity of product and service descriptions, FAQ coverage and structured data, integration documentation, and pricing transparency.
How accessible is Apollo.io?
Apollo.io's website provides detailed product pages, a comprehensive knowledge base, and pricing information. The platform's blog and magazine section offer extensive content about sales intelligence, outreach strategies, and product updates that are well-structured for AI crawlers.
How easy is it for LLMs to understand Apollo.io's mission?
Apollo.io positions itself as an all-in-one go-to-market platform. The messaging consistently emphasizes helping sales teams find, engage, and close prospects using data and automation. Product descriptions are clear and metrics-driven, making it straightforward for LLMs to summarize Apollo's value proposition.
Competitive Landscape
How Apollo.io differentiates in head-to-head matchups:
| Competitor | What Differentiates Apollo | How Apollo is Better |
|---|---|---|
| ZoomInfo | All-in-one platform at a fraction of the cost | Free tier available; no enterprise-only pricing gates |
| LinkedIn Sales Navigator | Built-in outreach sequences and dialer | Email + phone data included; not limited to LinkedIn InMail |
| Outreach.io | Integrated contact database with engagement tools | No need for separate data provider; lower total cost |
| Salesloft | 275M+ contact database included | Prospecting and engagement on one platform |
| Lusha | Multi-channel sequences and parallel dialer | More engagement features beyond just data lookup |
| Cognism | Larger database with US-focused accuracy | Stronger in North American market coverage |
| Seamless.AI | Built-in CRM integrations and deal management | Full pipeline visibility beyond contact finding |
Pricing
Free
forever
Unlimited email credits, 5 mobile credits/mo, 10 export credits/mo, basic filters and sequences.
Basic
per user / month (annual)
Advanced filters, technographics, job postings data, A/B testing, and more credits.
Professional
per user / month (annual)
Uncapped sending, advanced reports, AI-assisted email, dialer, and custom stages.
Organization
per user / month (annual, 3 min)
Advanced API, call transcription, international dialing, SSO, and custom reporting.
Security & Compliance
Apollo.io encrypts data at rest and in transit, employs multi-layer database security with intrusion detection systems, and conducts annual penetration testing by certified third-party consultants. The platform supports two-factor authentication and VPC with strict firewall settings.
Strengths & Top Pros
- ✅ Massive B2B database with 275M+ contacts and 73M+ companies - the most-reviewed in its G2 category
- ✅ All-in-one platform replaces separate data, outreach, dialer, and enrichment tools
- ✅ Generous free tier lets teams test the platform before committing budget
- ✅ Highly rated ease of use - 9.1/10 on G2 with an intuitive interface
- ✅ Native bi-directional CRM sync with Salesforce, HubSpot, Zoho, and Pipedrive
- ✅ AI-powered email writing and personalization built on millions of engagement data points
- ✅ Real customer results: 75% more meetings, $750K+ pipeline generated, 70% more SQLs
What People Say About Apollo.io
What Does Reddit Have to Say About Apollo.io
Reddit sentiment toward Apollo.io is broadly positive for prospecting and list building, with users praising the database size and free tier. Criticism centers on data accuracy outside the US, customer support response times on lower-tier plans, and the credit-based pricing model that can make actual costs higher than advertised.
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💬 Is Apollo.io worth it for cold outreach in 2025?
r/sales
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💬 Apollo vs ZoomInfo - which is better for a 10-person sales team?
r/SaaS
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💬 Apollo.io data accuracy - honest experiences?
r/salestechniques
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💬 Scaling cold email with Apollo sequences - results and lessons
r/Entrepreneur
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💬 Best Apollo.io alternatives for startups on a budget?
r/startups