Best B2B contact data providers in 2026

How we chose and ranked these providers

Tibexa publishes this list and is a vendor, though not of contact data. We sell outbound systems and list building (see our list building and CRM cleanup service), and in our own work we use Clay and Prospeo among other enrichment tools, so two entries below are tools we use. Neither is ranked first.

We checked each vendor's own pages on 18 October 2026 and ranked on four checks, in this order: dollar prices readable on the vendor's pricing page, a compliance posture documented on the vendor's own site, a coverage figure the vendor states, and a credit model explained in plain terms. The order measures how much a buyer can verify before a sales call. It says nothing about data accuracy, because no source here tests accuracy. Every coverage and accuracy number below is the vendor's own claim.

A compliance document on a vendor's site does not decide whether your use of the data is lawful. That depends on the country, the recipient and your purpose, so ask each vendor for its data processing agreement and take legal advice for your markets.

Summary table

1. Lusha

Lusha suits small teams that want to model cost before talking to anyone. It publishes a Free plan with 40 credits a month and three self-serve plans: Starter at 49.9 dollars a month with 400 credits, Pro at 69.9 with 600, and Premium at 399.9 with 3,400, all on monthly billing. Yearly billing is listed at 37.45, 52.45 and 299.95 dollars a month. Scale is custom. A verified email costs 1 credit and a phone number costs 5, and unused monthly credits roll over up to twice the plan limit.

Lusha says its search covers 515M+ verified contacts and 29M+ companies, and states 98 percent email accuracy and 85 percent (US) and 86 percent (global) phone accuracy, and says the figures are published at lusha.com/data. Accuracy figures from Zesty, Nextgen and Empiric on the page are customer testimonials. Its compliance page lists SOC 2 Type II, ISO 27001, ISO 27701, ISO 27017 and ISO 42001, says GDPR alignment is certified by ePrivacyseal GmbH, and says CCPA is validated by TrustArc.

Limit to know: at 5 credits a phone, Starter's 400 credits cover at most 80 numbers a month (our arithmetic). Sources: Lusha pricing, Lusha homepage, Lusha compliance. Checked 18 October 2026.

2. Hunter

Hunter fits teams that already know their target companies and need work emails found and verified. It lists a Free plan (50 credits a month), Starter at 49 dollars a month (34 on yearly billing) with 2,000 credits, Growth at 149 (104) with 10,000, and Scale at 299 (209) with 25,000. Enterprise is custom. One credit finds one email and half a credit verifies one. Credits reset monthly and do not roll over. A separate Data Platform lists a bundle of 1,000 search credits and 200,000 verification credits for 6,500 dollars, usable for 12 months.

On compliance, Hunter's help article says it complies with the GDPR, acts as controller for its own services and processor for data you import, runs its main servers in Belgium and signs Standard Contractual Clauses with sub-processors outside the EU and EEA. Hunter's homepage says "We source our data transparently" and reports 150,430,313 email addresses verified.

Limit to know: the pricing page's credit table covers email finding and verification only, and the GDPR article does not say where the data comes from. Sources: Hunter pricing, Hunter GDPR article, Hunter homepage. Checked 18 October 2026.

3. Clay

Clay is a table where each row can be enriched by several data vendors in turn, so it works as an aggregator and buys data from vendors in its marketplace. It suits teams that want to pay per lookup and choose their own providers. The pricing page lists a Free plan (100 data credits and 500 actions a month), Launch from 60 dollars a month (54 on annual billing), Growth from 205 (185 annual) and a custom Enterprise plan. Two meters apply: actions, which Clay says cost less than 0.01 dollars each, and data credits, which start at 0.05 dollars each. When an enrichment returns nothing, Clay says it charges neither.

Clay's site describes access to "150+ premium data sources and AI research agents" and a marketplace of "200+ data and AI vendors". Enterprise adds a custom CSA and DPA. The pages checked state no other compliance posture, so check each underlying vendor you route to.

Limit to know: the page does not say how many providers a waterfall queries, and its FAQ quotes different starting prices from its pricing grid. Our Clay list building playbook covers how we use it. Sources: Clay pricing, Clay homepage. Checked 18 October 2026.

4. Apollo

Apollo combines a contact database with sequencing, which suits teams that want both in one account. The pricing page names Free, Basic, Professional and Custom plans and offers monthly billing or a year paid upfront at a discount, but shows no dollar amounts. Credits cover emails, phone numbers, email warmup, domains, mailboxes and AI-researched data. They are pooled across the team and expire at the end of each billing cycle, including add-on credits. The page's menu says "Access 240M contacts & 30M companies".

Apollo's privacy center says it is ISO 27001 certified and SOC 2 certified by A-LIGN, with the full SOC 2 report available from sales, and "GDPR compliant as both a Data Processor and Data Controller". Individuals can use an opt-out form, and Apollo says it keeps the person on a suppression list so the profile is not reactivated.

Limit to know: price is not shown on the page, and unused credits do not carry over. Our comparison of Apollo and ZoomInfo goes further. Sources: Apollo pricing, Apollo privacy center. Checked 18 October 2026.

5. Cognism

Cognism is aimed at teams that need European data and documented phone-number screening. Its pricing page publishes no prices: it lists Standard and Pro plans with 5 seats included, a CRM enrichment add-on and a Data-as-a-Service option priced on structure, usage and delivery. One credit reveals one contact, and viewing a previously revealed contact is free.

Its compliance page says Cognism will "regularly scrub our data against 15 major Do Not Call and TPS lists", relies on legitimate interest under GDPR Section 6.1(f), is registered as a California data broker, is ISO 27001 and ISO 27701 certified, and is attested for SOC 2 Type II in security and availability. The only mobile accuracy figure on the page is an 87 percent statement from a customer about Diamond Data, which Cognism says its research team validates manually.

Limit to know: no database size is stated, and the page's FAQ lists Do Not Call registries by country in a way that does not match the figure of 15, so confirm which registries apply to your target countries. Sources: Cognism pricing, Cognism compliance. Checked 18 October 2026.

6. ZoomInfo

ZoomInfo sells to larger sales and marketing teams and prices by quote. The pricing page names Professional, Copilot Advanced and Copilot Enterprise on the sales side and Marketing Demand, ABM Lite and ABM Enterprise on the marketing side. Price depends on features, licenses and credit usage, and one credit is used each time a company or contact profile is exported. Marketing Demand lists 75K included credits and ABM Enterprise 150K.

ZoomInfo's trust center says the company is ISO 27001 and ISO 27701 certified, describes a TRUSTe validation covering GDPR privacy practices, and says it is a registered data broker in California.

Limit to know: the pricing page states no total number of contacts or companies, so the size of the database is not a published figure we can compare. Sources: ZoomInfo pricing, ZoomInfo trust center. Checked 18 October 2026.

7. Seamless.AI

Seamless.AI describes itself as a real-time search engine for B2B sales leads. Its homepage claims 1.8B+ verified business emails, 414M+ phone numbers and 100+ live data points per profile, and says that if an email is invalid it refunds the credit. The company does not explain how these figures are calculated.

On price, the FAQ says Seamless.AI "is free for up to 50 credits" and that beyond that it offers pricing options through its sales team, with no dollar amounts shown. A company press release says it is entering its second year of SOC 2 Type II certification across all five trust criteria, without naming the auditor or giving dates.

Limit to know: no prices or credit model appear on the pages checked, so budgeting needs a sales conversation. Sources: Seamless.AI homepage, SOC 2 press release. Checked 18 October 2026.

8. Prospeo

Prospeo charges per lookup, which suits teams building lists in small batches. Its help center lists a Free plan with 100 credits a month and per-user Starter (2,000 credits), Growth (5,000) and Pro (15,000) plans on monthly or yearly billing. A verified email costs 1 credit and a verified mobile 10, with the email included. Viewing results, searches with no results, and enrichments that find nothing are free, and re-enriching the same lead within 90 days is free across a team. Credits do not roll over.

Prospeo's homepage states 98 percent data accuracy and 143M verified email addresses. These are Prospeo's own figures.

Limit to know: the help page says plans are per user and sends you to the pricing page for dollar amounts, and the pricing and credit pages we checked make no compliance statement, so ask for its data processing agreement. Sources: Prospeo plans and pricing, how credits work, Prospeo homepage. Checked 18 October 2026.

How to pick between them

Vendor figures use different definitions, so Seamless.AI's 1.8B emails, Lusha's 515M contacts and Apollo's 240M contacts cannot be compared with each other. Test on your own market instead. Take 200 accounts from your ideal customer profile, run them through two providers, then verify the emails and compare the share that returns a valid address for the right job title.

Budget by credit model as well as by plan price. A phone-heavy list uses credits fast at Lusha (5 per phone) or Prospeo (10 per mobile), and Apollo's credits expire each cycle. If one provider covers some of your segments and another covers the rest, a table that calls several vendors in sequence, like Clay, may fit better than a larger plan at one vendor. Our list of Clay alternatives covers tools in that category.

In our UK SaaS work we built 50K+ verified leads with Sales Navigator, Crunchbase and enrichment tools, and campaign performance rose 3x (case study).

Questions

Which B2B contact data provider has the biggest database?

Vendors count different things, so the numbers do not compare. Seamless.AI claims 1.8B+ business emails, Lusha 515M+ contacts and Apollo 240M contacts, and ZoomInfo and Cognism state no total. Test two providers on the same 200 accounts.

Do contact data credits roll over?

It varies. Apollo credits expire at the end of each cycle, Hunter and Prospeo credits do not roll over, and Lusha says unused monthly credits roll over up to twice the plan limit. Clay says data credits can roll over while actions reset each cycle.

Is buying B2B contact data compliant with GDPR?

Vendor certificates do not settle that. Lawfulness depends on your recipients' country, the purpose and your own records, so ask the vendor for its data processing agreement and take legal advice.

Does Tibexa resell any of these databases?

No. Clients own the accounts, data and infrastructure. We use Clay and Prospeo among other enrichment tools when we build lists for clients.