Best B2B Data Providers for Cold Email in 2026 (Ranked by Value)

By Puzzle Inbox Team · Apr 9, 2026 · 11 min read

The 8 best B2B data providers for cold email in 2026. Apollo, ZoomInfo, Cognism, Clay, and more ranked by value, accuracy, and use case.

Data Is Half the Cold Email Equation

You can have the best infrastructure, the best copy, and the best sending platform. If your data is bad, your reply rate is bad. Cold email reply rates collapse when you're targeting the wrong people, the data is outdated, or the email addresses are invalid.

The B2B data market in 2026 has clear winners at different price points. Here's the ranked breakdown by value.

The Ranking

1. Apollo.io (Best Overall Value)

Pricing: $49 to $99 per user per month. Free tier with limited credits available.

Database: 260M+ contacts, 60M+ companies.

Strengths: Best value in the category by a wide margin. Comprehensive filters (industry, title, seniority, company size, tech stack, fundraising, hiring signals). Chrome extension for LinkedIn lookups. Built-in sequencer (though weaker than dedicated platforms like Instantly). Unlimited email credits on higher plans.

Weaknesses: Data accuracy is good but not perfect, figure 80 to 85% on email addresses. Some enterprise filters are weaker than ZoomInfo.

Best for: Most B2B cold email operations. Apollo hits the sweet spot of coverage, accuracy, and affordability. Unless you have specific enterprise data needs or massive budget, Apollo is the default answer.

2. ZoomInfo (Largest Database)

Pricing: $15,000+/year for typical plans, no public pricing.

Database: Largest in the industry, 400M+ contacts.

Strengths: Biggest database, highest enterprise coverage, deepest intent data. Strong Salesforce integration. Best direct-dial phone coverage.

Weaknesses: Pricing is prohibitive for smaller operations. Aggressive sales process. Contract lock-ins. For cold email specifically, Apollo's data is functionally similar at 10x lower cost.

Best for: Enterprise sales teams with budget and need for intent data, org charts, and comprehensive phone coverage.

3. Cognism (GDPR-First)

Pricing: $15,000+/year, no public pricing.

Database: Strong EU coverage, 100M+ contacts.

Strengths: GDPR-first design, strongest European data compliance. Good APAC coverage. Decent intent data. Phone-verified contacts.

Weaknesses: US coverage weaker than ZoomInfo or Apollo. Pricing in ZoomInfo territory without the database scale.

Best for: European-focused B2B operations. US teams selling into the EU market.

4. Lusha

Pricing: $29 to $51 per user per month.

Database: 100M+ contacts, strong mid-market coverage.

Strengths: Simple and affordable. Good Chrome extension. Easy integration with Salesforce and HubSpot. Decent mobile phone coverage.

Weaknesses: Credits are limited on cheaper plans. Database coverage smaller than Apollo. Fewer filter options.

Best for: SDRs and small teams who want a simple, affordable Chrome extension for prospecting. Less suited for bulk list building.

5. UpLead (Accuracy Focus)

Pricing: $74 to $299 per month.

Database: 155M+ contacts.

Strengths: 95% accuracy guarantee with free credit replacements for bad data. Real-time verification on every lookup. Clean interface.

Weaknesses: More expensive than Apollo for similar coverage. Smaller database than ZoomInfo.

Best for: Teams that prioritize data accuracy over database size. Compliance-sensitive operations.

6. Clay (Waterfall Enrichment)

Pricing: $149 to $720 per month.

Database: Aggregates 50+ data sources.

Strengths: Best-in-class data enrichment. Waterfall approach pulls from multiple providers automatically (Apollo, Clearbit, Hunter, LinkedIn, etc.) until it finds accurate data. Strong automation features. Growing integration ecosystem.

Weaknesses: Complex to set up. Expensive for simple use cases. Better as a secondary tool than primary data source.

Best for: Teams already running cold email at scale who need to enrich existing lists, build custom research workflows, or combine data from multiple sources.

7. Hunter.io

Pricing: $34 to $349 per month.

Database: 107M+ emails, focused on discovery.

Strengths: Best in category for finding emails from company domains. Chrome extension for quick lookups. Decent pricing for the specific use case.

Weaknesses: Not a full prospecting database. Weaker on company data, firmographics, and filtering. Better as a complement to Apollo/ZoomInfo than a replacement.

Best for: Teams doing account-based prospecting who already know target companies and need to find specific contacts by domain.

8. RocketReach

Pricing: $39 to $249 per month.

Database: 700M+ profiles, 60M+ companies.

Strengths: Large database. Decent pricing. Good social profile linking.

Weaknesses: Accuracy varies by industry and region. Interface is less polished than Apollo.

Best for: Budget operations needing high-volume prospecting without Apollo's specific filters.

Quick Decision Guide

If you have a budget under $500/month: Apollo.io. No real competition at this price point.

If you have enterprise budget ($10K+): ZoomInfo for US-focused, Cognism for Europe-focused.

If accuracy is more important than volume: UpLead.

If you need email finder specifically: Hunter.io.

If you're at scale and need custom enrichment: Clay as a supplement.

What to Look for in B2B Data

Email Accuracy

Every provider claims 95%+ accuracy. Independent testing puts real numbers at 80 to 90% for most providers. Always run data through email verification (ZeroBounce, NeverBounce, MillionVerifier) before sending, regardless of provider claims.

Filter Depth

The best B2B data providers let you filter by: industry, company size, revenue, location, job title, seniority, department, tenure in role, technologies used, hiring signals, fundraising signals, job posting activity. More filters = tighter ICP targeting = higher reply rates.

Phone Coverage

For cold email, phone numbers are a secondary signal (confirms a contact is real, helpful for multichannel outreach). ZoomInfo and Cognism lead here. Apollo is decent but not the best.

Intent Data

Intent data shows which companies are actively researching solutions like yours. Bombora, G2 intent, and first-party web data feed into provider platforms. ZoomInfo has the most comprehensive intent data, Apollo has a decent version on higher tiers.

Cost Per Meeting with Different Providers

Assuming 5,000 contacts sent per month, 3% reply rate, 50% positive reply rate, 30% meeting conversion.

Apollo ($99/month): 5,000 sends, 150 replies, 75 positive, 22 meetings. Data cost per meeting: $4.50.

ZoomInfo ($1,250/month): 5,000 sends, 150 replies, 75 positive, 22 meetings. Data cost per meeting: $56.82.

Lusha ($51/month): 5,000 sends, 150 replies, 75 positive, 22 meetings. Data cost per meeting: $2.32.

ZoomInfo is 12x more expensive per meeting than Apollo for functionally similar outcomes at the cold email tier. The enterprise value comes from org charts, intent data, and phone coverage, not from superior cold email data.