Best B2B Data Providers (2026)
Bad Data = Wasted Campaigns
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.
How We Evaluated
Four factors:
Accuracy — What % of emails are valid?
Coverage — How many contacts in your ICP?
Freshness — How often is data updated?
Value — Cost per usable contact
The 7 Best B2B Data Providers
1. Apollo — Best All-Around
Price: Free tier | $49/mo (basic) | $99/mo (pro)
Database: 275M+ contacts
Our take: Best starting point for most teams. The free tier is generous. Data quality is solid for the price.
2. ZoomInfo — Best for Enterprise
Price: $15K+/year (enterprise pricing)
Database: 100M+ contacts with deep firmographics
Our take: Premium data, premium price. Worth it if you're doing enterprise sales with big deal sizes.
3. Clay — Best for Enrichment
Price: $149/mo (starter) | $349/mo (explorer)
What it does: Waterfall enrichment across 50+ data sources
Our take: We use Clay for every client. It's not a database — it's a data layer that makes other sources better.
4. Cognism — Best for EMEA
Price: Custom (typically $1K+/mo)
Database: Strong European coverage, phone-verified mobiles
Our take: If you're targeting Europe, Cognism has data others don't.
5. Lusha — Best for Quick Lookups
Price: Free tier | $29/mo (pro)
What it does: Chrome extension for LinkedIn prospecting
Our take: Great for sales reps doing manual prospecting. Not built for bulk operations.
6. RocketReach — Best Email Coverage
Price: $53/mo (essentials) | $179/mo (pro)
Database: 700M+ profiles claimed
Our take: Good supplementary source. We use it when Apollo comes up empty.
7. BuiltWith + Store Leads — Best for Tech Targeting
Price: Varies by use case
What it does: Find companies using specific technologies
Our take: Perfect for SaaS targeting. "Companies using Salesforce" is more valuable than generic firmographics.
The BuzzLead Data Stack
What we actually use:
Apollo — Primary source for contacts
Clay — Enrichment layer (waterfall across sources)
LinkedIn Sales Nav — Manual verification + company research
NeverBounce + MillionVerifier — Email verification
This stack gives us 85%+ email accuracy for clients.
FAQ
Which data provider is most accurate?
ZoomInfo for enterprise, Apollo for SMB. But always verify — no provider is 100% accurate.
How much should I budget for data?
$100-500/month for most B2B teams. Enterprise sales may need $1K+/month for premium sources.
Can I use multiple providers?
Yes, and you should. Waterfall enrichment (trying multiple sources) catches what single sources miss.
How do I know if data is fresh?
Check job change dates. If contacts show roles from 2+ years ago, the data is stale.
Your pipeline, rebuilt.
20-minute strategy call. We'll audit your ICP, show you which signals we'd track, and map out exactly what the first 120 days would look like. No commitment, no pressure, no pitch deck.
