What Is Apollo.io?
Apollo is a B2B prospecting platform that combines a large contact database (270M+ verified contacts), AI-powered email sequences, lead scoring, and CRM integrations. Founded in 2018, it's positioned as an all-in-one prospecting tool for SDRs and sales development teams.
Unlike Outreach or Salesloft (which are engagement platforms for teams that already have leads), Apollo is for SDRs who need to find, contact, and qualify prospects at scale.
Key Apollo Features
- 270M+ B2B contacts with verified emails and phone numbers
- AI-powered email sequence builder with personalization
- Lead scoring and ICP matching
- Intent data (technographics, firmographics)
- Native CRM integrations (Salesforce, HubSpot, Pipedrive, Microsoft Dynamics)
- Apollo Dialer (phone calling directly from the platform)
- Built-in templates and best practice cadences
- Mobile app for on-the-go prospecting
The 270M+ Contact Database: What's Inside?
Apollo's core strength is its contact database. Let's break down what you get:
Coverage
- 270M+ B2B contacts globally
- 80M+ companies in the database
- ~3.5 contacts per company average
- Strong U.S. coverage (180M+ contacts), lighter outside U.S.
Data Points Per Contact
- Name, email, phone (where available)
- Company, title, department, seniority
- Company size, industry, funding stage
- LinkedIn profile (if available)
- Technographics (what tools the company uses)
Data Quality: Fresh or Stale?
Our assessment: Apollo's data is fresher than ZoomInfo's, but less verified than Clearbit. Email bounce rates are 15-20% (better than average for cold outreach, but higher than ideal). Phone numbers are less reliable than emails (25-30% accuracy).
AI Email Sequences: How Good Are They?
Apollo's AI email builder generates personalized subject lines and body copy based on prospect data. Here's what works and what doesn't:
What Apollo's AI Does Well
- Generates contextual subject lines (mentions company name, industry, job title)
- Personalizes opening lines ("Hi [First Name], I noticed you're at [Company]")
- Suggests relevant value props based on industry/company size
- Integrates company data into email (technographics, news, funding)
What It Struggles With
- Generic body copy (often longer than best-performing emails)
- Doesn't learn from your reply rates (no personalization feedback loop)
- Can't access LinkedIn profiles (data not integrated)
- Doesn't compete with Lavender or Outreach's email AI on response rates
Real impact: Apollo users report 35% response rates on average (better than untargeted cold email, but not as good as Lavender's 45%+).
Pricing & Value
Apollo Pricing (Per User/Month, Annual Commitment)
- Free Plan: $0 (100 leads/month, limited sequences)
- Starter: $49/month (1,000 leads/month, AI sequences, email tracking)
- Professional: $79/month (5,000 leads/month, Apollo Dialer, advanced analytics)
- Business: $119/month (15,000 leads/month, priority support, custom integrations)
Minimum: No minimum seat count (you can buy single licenses).
Cost for a 10-person SDR team: 10 × $79 × 12 = $9,480/year. Compare to Outreach (10 × $110 × 12 = $13,200) or Salesloft (10 × $110 × 12 = $13,200). Apollo is 28% cheaper.
Data Accuracy: What Do Users Report?
Email and phone accuracy is critical for cold outreach. Here's what SDRs report using Apollo:
Email accuracy: 15-20% bounce rate (Apollo claims 95%+ deliverability)
Phone accuracy: 25-30% of numbers don't connect or are disconnected
Title accuracy: 70-80% of title/role data is current
Recommendation: Validate emails before sending with tools like ZeroBounce or Hunter.io. Don't rely on Apollo phone numbers alone.
Apollo vs. ZoomInfo: Which Prospecting Database Wins?
| Factor | Apollo | ZoomInfo |
|---|---|---|
| Contact Count | 270M+ | 200M+ |
| Email Accuracy | Good (80-85%) | Excellent (90%+) |
| Phone Accuracy | Moderate (70-75%) | Good (80%+) |
| Technographics | Yes | Yes (more depth) |
| Intent Data | Basic | Advanced |
| Email Sequences | Built-in AI | Via integration |
| Price (per seat) | $49-119 | $150-300+ |
Verdict: ZoomInfo has better data quality and intent data, but costs 3-5x more. Apollo is the budget option with solid data for prospecting at scale. If you have unlimited budget, ZoomInfo. If you're price-sensitive or just starting outbound, Apollo wins.
Final Verdict: Is Apollo Worth It?
Bottom line: Apollo is the best all-in-one prospecting platform for SDR teams on a budget. The contact database is solid, AI sequences are decent, and the pricing is unbeatable compared to Outreach/Salesloft.
Who Should Buy Apollo
- SDR and sales development teams doing high-volume outbound prospecting
- Startups and early-stage companies with limited budgets
- Teams that need prospecting + sequences in one platform
- Anyone comparing Apollo vs ZoomInfo (Apollo is 70% cheaper)
Who Should Skip Apollo
- Enterprise organizations needing best-in-class email personalization (use Lavender or Outreach)
- Teams in highly regulated industries (compliance features are basic)
- Organizations needing advanced intent data (use ZoomInfo or 6sense)
Recommendation
Apollo is an excellent value for SDRs. It's not the best at any one thing, but it's solid at prospecting, sequences, and CRM integration. For teams under 50 reps doing outbound prospecting, Apollo beats the more expensive alternatives.
Rating: 8.5/10 for SDR teams. 6/10 if you need best-in-class email personalization AI.