The 8 Best B2B Data Suppliers in 2026
About a quarter of your email list went bad this year. ZeroBounce verified over 11 billion emails and found 23% annual decay across the board. That's not a rounding error - it's a structural problem that compounds every month you ignore it.
Most "best B2B data suppliers" roundups rank 15+ tools because that's a keyword play, not a buying guide. Here are 8. That's all you need to evaluate.
Our Picks (TL;DR)
- Prospeo - Best for verified email accuracy and self-serve access. 98% email accuracy, 7-day refresh, ~$0.01/email, free tier included.
- Apollo.io - Best all-in-one for SMBs. $49/user/mo entry, 4.7/5 on G2 across 9,477 reviews, built-in sequencing.
- Cognism - Best for selling into Europe. Diamond-verified mobiles, GDPR and CCPA compliant, strongest UK/EU coverage for verified mobile numbers.
Comparison Table
| Tool | Best For | Starting Price | Email Accuracy | Data Refresh |
|---|---|---|---|---|
| Prospeo | Email accuracy | ~$0.01/email (free tier) | 98% | 7 days |
| Apollo.io | SMB all-in-one | $49/user/mo (free tier) | ~87% US | ~Monthly |
| ZoomInfo | Enterprise | ~$15,000/yr | ~87% | ~6 weeks |
| Cognism | EU/GDPR | ~$22,500/yr | High (EU focus) | Not public |
| Lusha | Quick lookups | $22.45/user/mo (annual) | ~80% | Not public |
| UpLead | Accuracy guarantee | $99/mo | 95% guaranteed | ~Monthly |
| Lead411 | Budget intent | ~$99/mo | ~80% | Not public |
| Clearbit (Breeze) | HubSpot enrichment | $30/mo | N/A (enrichment) | Real-time |
You just saw 8 B2B data suppliers compared side by side. Only one delivers 98% email accuracy on a 7-day refresh cycle at ~$0.01 per email - with no annual contract locking you in.
Stop paying enterprise prices for data that decays in weeks.
The 8 Best B2B Data Suppliers Reviewed
1. Prospeo
Prospeo's database covers 300M+ professional profiles, 143M+ verified emails, and 125M+ verified mobile numbers - all refreshed on a 7-day cycle. The industry average sits around 6 weeks. That gap matters: by the time you're emailing a list from most vendors, a chunk of it has already gone stale.
The accuracy numbers back this up. 98% email accuracy, 30% mobile pickup rate, and a 5-step verification process that includes catch-all handling, spam-trap removal, and honeypot filtering. One customer, Meritt, tripled their pipeline from $100K to $300K/week and dropped their bounce rate from 35% to under 4% after switching.
Pricing is roughly $0.01 per email, 10 credits per mobile number, with a free tier giving you 75 emails plus 100 Chrome extension credits monthly. No annual contracts required. You can layer in buyer intent data across 15,000 Bombora topics and filter by technographics, job changes, headcount growth, and funding - 30+ filters total. Pair it with Instantly or Smartlead for sequencing and you've got a full outbound stack at a fraction of enterprise pricing.
2. Apollo.io
Apollo is the obvious starting point for most SMB teams, and the G2 numbers reflect that - 4.7/5 across 9,477 reviews. Reviewers consistently cite time savings for finding decision-makers as a top benefit. It bundles a contact database, email sequencing, and a dialer into one platform starting at $49/user/mo (Basic), $79/user/mo (Professional), or $119/user/mo (Organization, minimum 3 seats).
Here's the catch: accuracy outside the US drops off fast. Testing data puts Apollo's email accuracy around 87% in the US but closer to 74% in UK/EU and 68% in APAC. If your territory is North America, Apollo delivers strong value at that price point. Selling into EMEA? Run those emails through a dedicated email verifier tool before sequencing. Also worth noting that credits don't roll over between billing cycles, so use them or lose them.
3. ZoomInfo
ZoomInfo is the enterprise benchmark - and the tool most teams realize they're overpaying for within 6 months. We've seen teams renewing at $35K/year for a tool only 4 people actually use. Professional starts at ~$15,000/year, Advanced (with intent) runs $24,000+, and Elite hits $40,000+. Mid-market teams with 5-15 seats typically land at $30K-$75K/year once add-ons like NeverBounce verification (~$3K) and extra credit packs stack up.
You can negotiate. Procurement data shows 30-65% discounts are common, especially at renewal. The auto-renewal window is 60-90 days, so mark your calendar or you'll get locked in at full rate. The database itself is strong for US contacts - 4.5/5 on G2 across 9,035 reviews - but a consistent complaint surfaces in those reviews: data accuracy doesn't match the price tag.
Look, if your average deal size is under $15K, you almost certainly don't need ZoomInfo-level pricing. The data is good. The ROI math just doesn't work for most mid-market teams.
4. Cognism
Use this if you're selling into the UK or EU and need GDPR-compliant mobile numbers. Cognism's Diamond Data feature delivers phone-verified mobile numbers, and their UK/EU coverage for verified mobiles is among the strongest available.
Skip this if your territory is primarily North America - coverage there is thinner, and you'll pay enterprise prices for it. Vendr benchmarks put Grow at ~$22,500/year for 5 users and Elevate at ~$37,500/year. Vendr data also shows 28-43% discounts on Grow deals, so negotiate hard. Budget an extra $2K-$5K for onboarding that isn't always disclosed upfront.
5. Lusha
Lusha works best for small teams that need quick contact lookups without committing to a full platform. Pro runs $22.45/user/month on annual billing with a 3-seat minimum, giving you 3,000 credits per year. Phone numbers cost 5 credits each, so those credits burn fast if you're pulling mobiles regularly.
For email-only lookups, it's a solid lightweight option. For anything at scale, you'll outgrow it quickly.
6. UpLead
UpLead's differentiator is its 95% accuracy guarantee - they'll refund credits for bad data, which is rare in this space. Plans start at $99 for 170 leads and $199/month for 400 leads, with a 7-day free trial. The database is smaller than Apollo or ZoomInfo, but the refund policy means you're not paying for garbage records. For teams that value data quality over sheer volume, it's worth a trial.
7. Lead411
Budget-friendly intent data vendor at ~$99/mo, with a 7-day free trial. Annual plans include intent signals, which is unusual at this price point - most intent data starts at $7K+/year from standalone providers. The database isn't as deep as the top-tier options, but the intent layer at that price makes it a strong pick for teams just getting started with signal-based outbound.
8. Clearbit (Breeze Intelligence)
Now fully integrated into HubSpot as Breeze Intelligence. Starter runs $30/mo (100 credits), Growth $150/mo (1,000 credits), Scale $700/mo (10,000 credits). This isn't an outbound prospecting tool - it's an enrichment engine. Best for HubSpot-native teams focused on shortening forms, scoring leads, and filling in firmographic gaps on inbound records.
How to Choose the Right Vendor
We've run test batches across multiple providers on this list. Five criteria matter more than database size:
Accuracy verification. Ask for a test batch before signing anything. Run 500 contacts through your sequencer and measure bounce rates. Any supplier confident in their data will let you do this. If they won't, that tells you something.
Refresh cycle. A 300M database refreshed weekly beats 500M refreshed monthly. That gap compounds fast when you're running outbound at scale - stale data doesn't just bounce, it damages your sender reputation.
Pricing model. Seat-based, credit-based, and per-lead models all look different on a spreadsheet. Normalize everything to cost-per-usable-contact to compare apples to apples. A cheap per-seat plan with 80% accuracy is more expensive than a credit-based plan with 98% accuracy once you factor in wasted sends.
Compliance. GDPR fines reach EUR 20M or 4% of global revenue. California's B2B exemption expired in January 2023, so CCPA now covers business contacts too. Don't treat this as a checkbox - ask your vendor for a DPA before signing. For a deeper framework, see B2B compliance and GDPR compliant database.
Integration fit. Does it push directly into your CRM and sequencing tools? Manual CSV exports add hours of friction every week, and the consensus on r/sales is that teams underestimate this friction until they're drowning in spreadsheets.
Quick use-case mapping: Cold email teams -> Prospeo + Instantly. Enterprise RevOps -> ZoomInfo. EU compliance -> Cognism. Budget intent -> Lead411. HubSpot enrichment -> Clearbit.
What B2B Data Actually Costs
About 70% of the B2B buying journey happens anonymously, which is why intent data commands premium pricing. Standalone providers like Bombora charge $25K-$80K/year, 6sense runs $35K-$150K+, and ZoomInfo's Streaming Intent add-on sits at $7,200-$36,000/year for mid-market.
Let's be honest about what separates the vendors that look good on paper from the ones that actually perform in your sequencer: data freshness. A weekly refresh catches job changes, company moves, and email rotations before they tank your deliverability. Among B2B data suppliers in the US, refresh cycles range from real-time to quarterly - always confirm the cadence before you commit budget. That single question will save you more money than any negotiation tactic.
If you're also comparing broader sources beyond this shortlist, start with B2B databases and data vendors in the USA, then narrow down by your outbound motion and compliance needs.
Most B2B data suppliers refresh every 6 weeks. By then, 23% annual decay has already cost you bounces, burned domains, and missed pipeline. Prospeo's 7-day refresh, 5-step verification, and 30+ search filters give you cleaner data than tools charging 90x more.
Switch suppliers - triple your pipeline like Meritt did.
FAQ
What types of data do B2B data suppliers provide?
Four categories: contact data (verified emails and direct dials), firmographic data (company size, revenue, industry), technographic data (tech stack signals), and intent data (buying signals showing which accounts are actively researching solutions). Most vendors specialize in one or two. Few cover all four well.
Is buying B2B data legal?
Yes, when your vendor complies with GDPR and CCPA. Most B2B data providers operate under GDPR's legitimate interest basis. California's B2B exemption expired January 2023, so business contacts now fall under CCPA protections. Always request a DPA before signing.
How often should B2B contact data be refreshed?
Weekly is the gold standard; quarterly is the bare minimum. With 23% of email lists decaying annually, a database refreshed every 6 weeks is already stale by the time you use it. The fastest major refresh cycle we've seen is 7 days - most competitors sit at 4-6 weeks.
What's a good free option for small teams?
Prospeo's free tier includes 75 verified emails and 100 Chrome extension credits monthly with no contract. Apollo.io also offers a free plan with limited credits. For teams running real outbound campaigns, higher email accuracy means fewer wasted sends and better deliverability from day one.