Best B2B Data Providers (2026)
Best B2B Data Providers 2026 (Honest Comparison)
You can have perfect emails, flawless infrastructure, and a killer offer.
None of it matters if you're emailing the wrong people.
Data quality is the foundation. Here's where to get it.
Quick Comparison
| Price | Accuracy | Our take | |
|---|---|---|---|
| Apollo | Free tier available | $49/mo (basic) | $99/mo (professional) | 85-90% — always verify before sending | Best starting point for most teams. The free tier is generous. Professional tier unlocks intent data and better filters. Just don't skip verification. |
| ZoomInfo | Starting $15,000+/year (enterprise pricing) | 90%+ — among the best | If budget allows, ZoomInfo's data quality is hard to beat. The intent signals help prioritize outreach. But the price puts it out of reach for most startups. |
| LinkedIn Sales Navigator | $99/mo (core) | $149/mo (advanced) | It's LinkedIn — the data is self-reported and mostly current | Essential for prospecting research. But you can't export emails directly. Pair with Apollo or Clearbit for contact info. |
| Clearbit | Custom pricing (based on volume) | 90%+ on enrichment | Clearbit excels at turning email addresses into rich profiles. Great for inbound lead scoring and website visitor identification. Less useful for cold outreach building. |
| Cognism | Custom pricing (~$15,000+/year) | 95%+ phone number accuracy (their specialty) | If you're calling prospects or targeting European markets, Cognism is worth the premium. Their phone data is notably better than competitors. |
| Lusha | Free tier | $36/mo (pro) | $59/mo (premium) | 85%+ — verify before sending | Fast and convenient for individual prospecting. The extension makes it easy to grab data while browsing. Better for sales reps than large-scale list building. |
| Clay | $149/mo (starter) | $349/mo (explorer) | $800/mo (pro) | Varies by source — Clay aggregates, doesn't own data | Clay isn't a data provider — it's a data orchestrator. We use it heavily. Connect Apollo, Clearbit, LinkedIn, and custom sources. Let Clay waterfall through them for best coverage. |
How We Evaluated
Four factors:
Accuracy — Are emails valid? Are contacts current?
Coverage — Can you find your ICP?
Depth — Company size, tech stack, funding, intent signals?
Value — What do you actually get for the price?
We've used all of these for real campaigns. Not demo accounts. Real sends.
The 7 Best B2B Data Providers
1. Apollo — Best Overall Value
Price: Free tier available | $49/mo (basic) | $99/mo (professional)
Database size: 275M+ contacts
What you get:
Contact emails and phone numbers
Company data (size, industry, tech stack)
Intent signals
Job change alerts
Built-in sequencing
Accuracy: 85-90% — always verify before sending
Our take: Best starting point for most teams. The free tier is generous. Professional tier unlocks intent data and better filters. Just don't skip verification.
2. ZoomInfo — Best Enterprise Data
Price: Starting $15,000+/year (enterprise pricing)
Database size: 300M+ contacts
What you get:
Extensive company data
Buyer intent signals
Org charts
Direct dials
Integration with major CRMs
Accuracy: 90%+ — among the best
Our take: If budget allows, ZoomInfo's data quality is hard to beat. The intent signals help prioritize outreach. But the price puts it out of reach for most startups.
3. LinkedIn Sales Navigator — Best for Research
Price: $99/mo (core) | $149/mo (advanced)
What you get:
Search LinkedIn's full database
Saved lead lists
InMail credits
Company alerts
Buyer intent (on Advanced)
Accuracy: It's LinkedIn — the data is self-reported and mostly current
Our take: Essential for prospecting research. But you can't export emails directly. Pair with Apollo or Clearbit for contact info.
4. Clearbit — Best for Enrichment
Price: Custom pricing (based on volume)
What you get:
Email-to-company matching
Company firmographics
Tech stack detection
Role and seniority data
Real-time enrichment API
Accuracy: 90%+ on enrichment
Our take: Clearbit excels at turning email addresses into rich profiles. Great for inbound lead scoring and website visitor identification. Less useful for cold outreach building.
5. Cognism — Best for Europe + Phone Numbers
Price: Custom pricing (~$15,000+/year)
Database size: 400M+ contacts globally
What you get:
GDPR-compliant European data
Direct dial phone numbers
Intent data
Bombora integration
Accuracy: 95%+ phone number accuracy (their specialty)
Our take: If you're calling prospects or targeting European markets, Cognism is worth the premium. Their phone data is notably better than competitors.
6. Lusha — Best Chrome Extension
Price: Free tier | $36/mo (pro) | $59/mo (premium)
What you get:
LinkedIn profile enrichment
Direct emails and phone numbers
Chrome extension
CRM sync
Accuracy: 85%+ — verify before sending
Our take: Fast and convenient for individual prospecting. The extension makes it easy to grab data while browsing. Better for sales reps than large-scale list building.
7. Clay — Best for Custom Workflows
Price: $149/mo (starter) | $349/mo (explorer) | $800/mo (pro)
What you get:
Waterfall enrichment (pulls from 50+ sources)
AI personalization at scale
Custom formulas and workflows
Integration with any data source
Accuracy: Varies by source — Clay aggregates, doesn't own data
Our take: Clay isn't a data provider — it's a data orchestrator. We use it heavily. Connect Apollo, Clearbit, LinkedIn, and custom sources. Let Clay waterfall through them for best coverage.
How We Use Data at BuzzLead
Our waterfall approach:
Layer 1: Apollo for foundation (company + contact basics)
Layer 2: LinkedIn Sales Nav for research validation
Layer 3: Clearbit for enrichment (tech stack, company signals)
Layer 4: Clay to tie it together with custom personalization
Then verify everything through NeverBounce before sending.
This process powered campaigns generating $8M+ in pipeline for clients.
The Real Talk on Accuracy
Every provider claims 90%+ accuracy. In practice:
Expect 70-85% valid on any single source
Layering sources improves coverage
Always verify before sending — no exceptions
Data decays 2-3% monthly. Yesterday's perfect list is today's bounce risk.
Frequently Asked Questions
What's the best free B2B data tool?
Apollo's free tier gives you 50 credits/month. Good for getting started. Snov.io also offers a free tier.
How much should I budget for data?
Small teams: $100-300/month. Scale-ups: $500-1,000/month. Enterprise: $15,000+/year for ZoomInfo/Cognism.
Is it better to buy lists or build them?
Build them. Bought lists have poor targeting and worse accuracy. The time invested in building pays off in reply rates.
How do I know if data is accurate?
Run a small test. Send 100 emails, check bounce rate. Under 5% = usable. Over 10% = find better data.
Your pipeline, rebuilt.
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