What is the best B2B contact data provider for a small team?

How do the top B2B data providers compare?

Every fact is from the vendor's own site. Coverage and accuracy numbers are vendor-stated: none of them is an independent test.

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Whatever you pick, your data starts going stale on day one: at least 23% of an email list goes bad each year (ZeroBounce, 11B+ addresses, 2025; ZeroBounce calls it a low estimate), and Lusha's 2026 study of 140,284 US sales leaders found 12.25% changed jobs in 12 months and 25.67% in 24 months (job changes only).

Which data provider is best if you only send email?

Hunter. Credits are shared by unlimited team members on every plan, so three reps pay one bill: Starter is $49 a month, or $34 a month billed yearly ($408 a year), for 24,000 credits a year. It finds and verifies emails. Its pricing page doesn't mention phone numbers, so test a sample before you rely on it for calling.

That's the right trade for email-only outbound. Pair it with a verifier pass before every campaign: verified lists bounce less. Our pick: best email verification tool.

Which data provider is best for cold calling in the US?

Lusha if you call a focused list. UpLead if you want the email and the mobile for every contact.

• Lusha Starter: $37.45 a month billed yearly, or $49.90 month to month, one seat. A phone number costs 5 credits, so 400 monthly credits buy at most 80 numbers, about 20 new numbers a week. Fine for a focused list. Thin for a phone-heavy SDR.
• UpLead Essentials: $99 a month, or $74 billed annually, for 170 credits a month, each unlocking a verified email and a mobile direct dial. One user per plan. More on cost per contact in is UpLead worth it?.

Whichever you pick, measure it by connect rate. In one vendor's own SDR data (Cognism's State of Cold Calling 2024), about 1 in 6 dials reached a person (16.6%). If your numbers connect far below one team's rate, the data is the problem, not the rep. Diagnose yours: what is a good cold call connect rate.

Which data provider is best for European prospects?

Kaspr on a budget, Cognism if phones are the whole game.

• Kaspr works as a Chrome extension on LinkedIn profiles and leads with "accurate European contact data" (vendor-stated). Starter is $65 per user a month, with unlimited B2B emails and 100 phone credits a month. Its USD pricing page lists monthly prices only, so we don't quote an annual price. It shows GDPR and CCPA compliance badges on its site (vendor-stated).
• Cognism calls itself "Europe's most trusted B2B data" and sells phone-verified mobiles it calls Diamond Data (vendor-stated). It says it scrubs data against Do Not Call registries in the US, Australia, the UK (TPS/CTPS), France, Germany and other European countries. Pricing is by quote; its Standard and Pro packages include 5 seats, and a credit is spent when you reveal a contact.

A 5-seat package makes Cognism a team purchase, not a solo one. If you're 1–2 reps calling into Europe, test Kaspr's free plan first.

Calling or emailing into Europe? Data-protection rules apply to how you store and use contact data. Check with legal counsel before you import a list.

When does Clay make sense?

When list building is your bottleneck. Clay is a spreadsheet-style workspace that pulls from what it says are 150+ data providers and runs "multi-provider waterfalls": ask source one, and if it has nothing, ask source two (vendor-stated). That raises coverage over any single provider.

The catch is effort. Clay rewards someone who'll build and maintain the workflows. The free plan (500 actions and 100 data credits a month, no phone enrichment) is enough to learn. Launch is from $185 a month month to month, with 15,000 actions and 2,500 data credits a month, or from $167 a month billed annually, with 180,000 actions and 30,000 data credits a year.

If you just need 200 good contacts a month, a single provider is simpler.

Which data providers document AI features?

Four of the seven tie AI features to plans on their pricing pages. We read each vendor's own pricing page on 2026-10-06 and list only what it names. Whether any of it works for your list is a different question: the 20-contact test below answers that one.

• Hunter: "AI Assistant in Discover" is listed on every plan, Free included. "AI Writing Assistant", which Hunter pitches for writing cold emails, is listed on the paid plans.
• Cognism: the Standard and Pro packages both list "AI company research", "AI persona builder" and "AI search".
• Clay: "Enrich with Claygent" is listed on every plan, Free included. Clay describes Claygent as "Clay's AI agent with access to web research".
• ZoomInfo (for reference): the ZoomInfo Professional sales plan lists "AI-powered email generation and personalization". The Copilot Advanced plan adds "AI-generated talking points", and Copilot Enterprise adds "Copilot chat".
• Lusha: the pricing page ties no AI feature to a plan. Its site menu lists an MCP product, "Verified B2B data in Claude, ChatGPT, and any MCP client".
• UpLead and Kaspr: their pricing pages name no AI feature. That doesn't prove the products have none, only that the pricing page doesn't say so.

What to do with this: treat AI features as extras, not the reason to buy. The data is the product, so the pick still comes from region, phone versus email and budget.

How do you test a data provider before you pay?

Run the 20-contact test on the free plan or trial. It takes an afternoon and saves a year of bad data.

1. Pick 20 real targets from your exact ideal customer profile (right titles, right company size, right region). Not a random sample.
2. Pull them from each provider you're considering.
3. Verify every email with a verifier. Count valid, risky and invalid.
4. Call every number over two days. Count wrong numbers, disconnected lines, switchboards and the right person.
5. Score it: valid emails out of 20, and right-person numbers out of 20. Divide the monthly price by the valid contacts you'd get in a month to find your real cost per usable contact.
6. Buy monthly first. Take the annual discount only after the tool proves itself on real campaigns.

Not sure how many contacts a month you need? Work back from your meeting target in the Pipe Playbook calculator.

How do you pick in 60 seconds?

Go in order. Stop at the first "yes."

1. Email only? → Hunter.
2. Calling into Europe, and you're a team of 5+? → Cognism (quote). Fewer reps? → Kaspr.
3. Prospecting from LinkedIn profiles all day? → Kaspr.
4. Calling a focused US list on the lowest paid budget? → Lusha Starter.
5. Want email and mobile on every contact? → UpLead Essentials.
6. Building lists from several sources with automation? → Clay.

Wondering whether LinkedIn's own tool replaces a data provider? Read is Sales Navigator worth it. Building the rest of the stack? Pick the Stack.

When should you skip each provider?

One skip line per tool, from the table and sections above.

• Hunter: skip it if you call. Its pricing page doesn't mention phone numbers, so test a sample first.
• Lusha: skip it for a phone-heavy rep. A phone costs 5 credits, so Starter's 400 monthly credits buy at most 80 numbers.
• UpLead: skip it for a team of several reps. It's one user per plan.
• Kaspr: skip it if your reps build lists outside LinkedIn. It works as a Chrome extension on LinkedIn profiles.
• Cognism: skip it if you're 1–2 reps. Its Standard and Pro packages include 5 seats, and it's quote only.
• Clay: skip it if you just need about 200 good contacts a month, or if nobody will build and maintain workflows. A single provider is simpler.
• ZoomInfo: skip it if you want a price before a sales call. It's quote only.