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Best B2B Data Providers for North American Coverage

Austin Hughes
·
Updated on: August 6, 2026
TL;DR: North American coverage only means something once you split it three ways: by company segment (enterprise, mid-market, SMB), by contact seniority, and by channel (email, mobile, direct dial). This is written for RevOps, sales, and marketing teams evaluating B2B data providers, and it includes a 100-account test you can run yourself in under a day to get a real fill-rate number instead of a marketing claim.

What Is the Fastest Way to Compare North American Data Coverage?

Run the same 100 accounts through each vendor's trial and count what actually comes back, split by segment, seniority, and channel. A published "500 million contacts" figure tells you nothing about whether a vendor can find the VP of Finance at a 40-person Toronto logistics company, whether the number is a work email or a cellphone, or whether it was verified last month or three years ago.

Every provider in this article claims strong North American coverage. That claim is true and useless at the same time, because "coverage" is being used to mean three different, unrelated things: how large the database is, how much of your specific list it can match, and how accurate the matched records are. The rest of this article treats those as three separate questions and attributes every number to the vendor or reviewer that published it.

Key Facts at a Glance

All figures below are vendor-published claims, reviewer-reported patterns, or figures from independent platforms (G2, Capterra, HubSpot, Cognism newsroom), not an independently audited comparison. Read as directional, not as verified measurement.

Provider Strongest segment (as published/reported) Strongest channel Pricing shape
Unify Mid-market and PLG motions Orchestrated email, call, and social sequencing across a 40+ source waterfall Self-serve $20 to $60/seat/mo, custom above
Apollo US-based SMB and mid-market Email Free tier, then $49 to $119/user/mo annual
ZoomInfo Enterprise Org-chart and contact mapping Custom annual contract
Cognism Enterprise and mid-market, US and Canada dual coverage Direct dial Credit-based subscription, Standard/Pro
Clay RevOps-led technical teams Email, via multi-vendor waterfall Credit-based, roughly $143 to $720/mo
Lusha SMB and mid-market Email, with phone as a premium credit tier Free, Starter, Pro, Premium, Scale (credit-based)
Clearbit (HubSpot Breeze Intelligence) North American SaaS companies already on HubSpot Company and contact enrichment (no phone/email discovery) Bundled into HubSpot tiers or $45+/mo standalone
Hunter SMB and solo sellers Email finding and verification Free, then $49 to $299/mo
UpLead SMB and mid-market Verified email (95% accuracy guarantee, per vendor) $74 to $149+/mo annual, credit-based
LinkedIn Sales Navigator Any segment with strong LinkedIn membership Profile research and InMail, not exportable contact data $119.99 to $159.99/mo, custom above

Methodology and Limitations

What we can and cannot verify about coverage. No independent, audited comparison of North American B2B data coverage exists across all ten providers here. Every coverage figure, pricing detail, and product claim in this article is attributed to the vendor, review platform, or press release that published it, read in August 2026, and should be treated as a marketing or reviewer claim rather than a controlled measurement. Our segment, seniority, and channel notes reflect vendor documentation and aggregated G2/Capterra reviewer patterns, not a test we ran ourselves across all ten tools. That is exactly why the recommendation below is to run the 100-account protocol on your own ICP: your fill rate is the only coverage number that predicts anything for your outbound. What this article does not score: international coverage outside the US and Canada, native dialer call quality, or CRM-sync depth, each of which deserves its own comparison.

Why Do Segment, Seniority, and Channel Matter More Than Total Database Size?

A provider that is excellent at finding enterprise finance emails can be weak at finding SMB mobile numbers, because those are sourced, verified, and refreshed through different pipelines. Treating "coverage" as one number hides that.

  • Segment (enterprise, mid-market, SMB, sub-20-employee): larger, more established companies publish more of their org chart publicly, which is easier for any vendor to find and verify. Sub-20-employee companies are the hardest segment for every provider in this list, because there is often no public directory to scrape in the first place.
  • Seniority (C-level, VP/director, individual contributor): C-level and VP emails get verified more often because they appear in press releases, conference speaker lists, and LinkedIn activity. Individual-contributor contacts are typically the weakest match rate across every vendor, regardless of what the vendor's homepage claims.
  • Channel (work email, personal email, mobile, direct dial): work email is the easiest field for any provider to source and verify. Mobile numbers and direct dials require a fundamentally different data pipeline (carrier records, opt-in databases, call-verified sources), which is why the vendors built around direct dials, like Cognism, are explicit about that being their specialization rather than a byproduct of their email database.

For a deeper walkthrough of testing match rate specifically, see Unify's guide to comparing enrichment providers on accuracy and freshness, which goes deeper on that single axis than this article does.

Which B2B Data Provider Has the Best North American Coverage?

Below is a flat ranked list, not a set of tiers or categories. Every entry uses the same five fields so you can compare like for like. Unify is ranked first because it is the platform we built and believe is the best starting point for most outbound teams, and its entry says plainly where it is not the right fit.

1. Unify

What it is / Verdict: Outbound AI for sellers, where agents and reps work side by side to find, research, and reach buyers. Not a raw-database play, and Unify says so directly: its North American strength is orchestration, waterfalling 11+ email and phone vendors plus 40+ signal sources into one workspace instead of asking a rep to hold accuracy in their head across separate tools.

Strongest / Weakest for: Strongest for mid-market and PLG companies that need enrichment, intent signals, and multi-channel sequencing working together, per Unify's B2B Company & Contact Data page (1.1B+ contacts, 65M+ companies, 40+ data sources). Weakest for teams that want nothing but the single deepest raw contact file with no orchestration layer; a dedicated data vendor fits that narrower need better.

Pricing: Self-serve per seat, per Unify's pricing page: Free ($0, up to 3 seats), Base ($20/seat/mo, 800 credits), Pro ($60/seat/mo, 2,400 credits), Business (custom annual, read-write CRM sync).

Pick it when: You want enrichment, signals, and sequencing in one workspace. Per the Perplexity case study, $1.7M in pipeline in three months with no dedicated BDR team; per the HyperComply case study, this Toronto-based company generated $1.6M+ in pipeline over twelve months and got a Fortune 100 CISO reply within 15 to 25 minutes.

2. Apollo

What it is / Verdict: A self-serve contact database and sequencing platform, and one of the most widely reviewed tools in this category. Strongest specifically inside the US; reviewers consistently flag a drop-off once you leave North America.

Strongest / Weakest for: Strongest for US-based SMB and mid-market prospecting on tight budgets, rated 4.5 out of 5 on Capterra with US tech and SaaS contacts cited as its most reliable data. Weakest on international accuracy: patterns aggregated across G2, Capterra, and Trustpilot repeatedly describe outdated job titles and disconnected phone numbers concentrated outside North America, per Capterra's Apollo review archive.

Pricing: Free tier, then Basic, Professional, and Organization tiers running roughly $49 to $119 per user per month billed annually, per aggregated 2026 pricing breakdowns of Apollo's published rate card.

Pick it when: You are a US-focused SMB or mid-market team that needs a low-cost, self-serve entry point and can tolerate manually verifying records outside North America.

3. ZoomInfo

What it is / Verdict: An enterprise sales-intelligence platform built around company org charts and contact-level buying signals. Built for enterprise budgets and enterprise-scale North American org-chart depth, not for teams that want to start small.

Strongest / Weakest for: Strongest for enterprise teams that need org-chart mapping and multiple decision-makers per account, the use case its own sales materials are built around. Weakest for any team without budget for a multi-year contract; there is no published self-serve pricing.

Pricing: No fixed public price. ZoomInfo scopes every contract to team size, credit volume, and add-ons like intent data; third-party breakdowns of its own materials estimate entry contracts starting around $15,000 per year, scaling past $40,000 with seats and credits.

Pick it when: You are an enterprise team with an established procurement process that needs multi-threaded contact mapping more than a fast self-serve signup.

4. Cognism

What it is / Verdict: A B2B data and sales-intelligence platform built recently around direct-dial phone coverage, the most explicitly NA-relevant expansion story on this list. Per Cognism's newsroom, it added 20 million direct dials across Europe and North America, broadening dial coverage that was "previously focused on the United States of America."

Strongest / Weakest for: Strongest for teams whose bottleneck is mobile and direct-dial reach rather than email. Weakest for teams that want self-serve signup and transparent published pricing; Cognism sells Standard and Pro through sales-assisted quotes, not an open rate card.

Pricing: Credit-based subscription across Standard and Pro packages, five seats included at entry, per Cognism's own pricing page. One credit is consumed each time a contact record is revealed; revealed records are reusable at no extra cost unless the data changes.

Pick it when: Cold-calling and direct dial are a primary channel and you sell into both the US and Canada, since Cognism's expansion explicitly targeted that combined region.

5. Clay

What it is / Verdict: A workflow and enrichment platform that waterfalls dozens of underlying data vendors together rather than owning one proprietary database. The strongest email-coverage lift of any tool here through waterfalling, with a well-documented weak spot on mobile.

Strongest / Weakest for: Strongest for RevOps-led teams comfortable building custom enrichment workflows; independent testing found waterfalling across 150-plus providers on Clay raised email coverage from roughly 40 percent to 78 percent on a sample list. Weakest on mobile and direct-dial: the same testing held phone-number matches at only 30 to 35 percent, and Clay's G2 listing shows reviewers flagging the credit-based cost model as unpredictable at volume.

Pricing: Credit-based, restructured in March 2026; published plans run roughly $143 to $720 per month depending on volume, per G2's Clay listing.

Pick it when: You already have RevOps capacity to build and maintain custom waterfall workflows and your primary channel is email, not mobile.

6. Lusha

What it is / Verdict: A contact database and browser-extension-led prospecting tool for individual reps and small teams. It prices phone data at a distinctly higher tier than email, a useful signal about where its own confidence sits.

Strongest / Weakest for: Strongest for fast, in-workflow lookups for reps prospecting directly from LinkedIn or a CRM via the browser extension. Weakest on a single stated database-size figure by region; Lusha's pricing page does not publish one, so no coverage number is claimed here.

Pricing: Free, Starter, Pro, Premium, and Scale tiers, credit-based, per Lusha's pricing page. Email lookups cost 1 credit; phone lookups cost 5 credits, a 5x difference reflecting how much harder direct-dial data is to source and verify.

Pick it when: Your reps want a lightweight, extension-first workflow where email is primary and phone lookups are occasional rather than phone-first.

7. Clearbit (now HubSpot Breeze Intelligence)

What it is / Verdict: A firmographic and technographic enrichment tool, acquired by HubSpot and rebranded as Breeze Intelligence, sold as a credit add-on to a paid HubSpot subscription. Strong at enriching records you already have; explicitly not a source of new phone or email contacts.

Strongest / Weakest for: Strongest for North American SaaS companies already on HubSpot enriching existing records; HubSpot's own announcement states it draws on over 200 million company and buyer profiles and 40+ firmographic, demographic, and technographic attributes. Weakest at new contact discovery: HubSpot's own documentation states it "does not provide phone numbers or email addresses for contacts," focusing only on records that already have an email on file.

Pricing: Requires an existing paid HubSpot subscription. Credits bundle into HubSpot tiers (roughly 500/month Starter, 3,000/month Professional, 5,000/month Enterprise, per third-party 2026 breakdowns), or standalone from around $45/month for 100 credits, no rollover.

Pick it when: You are already a HubSpot customer enriching existing records rather than building new prospect lists from scratch.

8. Hunter

What it is / Verdict: An email-finding and verification tool, positioned squarely around one channel, and honest about that scope. Hunter's own pricing page frames the product as built to "find, verify, and send cold emails," with no direct-dial or mobile-number ambitions stated anywhere.

Strongest / Weakest for: Strongest for solo sellers and small teams that need low-cost, accurate email discovery and verification. Weakest for any team that needs phone, mobile, or direct-dial data; it is simply not part of what Hunter sells.

Pricing: Free ($0, 50 credits/month); Starter ($49/mo or $34/mo annual, 2,000 credits); Growth ($149/mo or $104/mo annual, 10,000 credits); Scale ($299/mo or $209/mo annual, 25,000 credits); Enterprise custom.

Pick it when: Email is your only channel and you want the lowest-cost, most transparent self-serve pricing in this list.

9. UpLead

What it is / Verdict: A self-serve contact database built around a published accuracy guarantee on verified emails, a more testable claim than most competitors publish, per UpLead's pricing page (95% data accuracy guarantee).

Strongest / Weakest for: Strongest for SMB and mid-market teams that want verified emails and are willing to test the accuracy claim directly. Weakest for teams needing deep direct-dial or mobile coverage; UpLead's materials center on verified email, not phone.

Pricing: Essentials ($74/mo annual, 2,040 credits/yr, or $99/mo monthly); Plus ($149/mo annual, 4,800 credits/yr, or $199/mo monthly); Professional at custom annual pricing.

Pick it when: You want a testable accuracy guarantee on email specifically and don't need phone or mobile depth from the same vendor.

10. LinkedIn Sales Navigator

What it is / Verdict: LinkedIn's own paid research and outreach layer on its professional network, not an exportable contact database. Structurally different from every other entry here: its "coverage" is whichever prospects maintain an active LinkedIn profile.

Strongest / Weakest for: Strongest for research and InMail outreach where buyers are LinkedIn-active, since profile freshness (title changes, job moves) is often more current than a third-party database. Weakest for any workflow needing bulk export, phone numbers, or personal emails; it is not built to hand you a downloadable list, per LinkedIn's own plan comparison page.

Pricing: Core ($119.99/mo or $1,079.88/yr); Advanced ($159.99/mo or $1,799.88/yr); Advanced Plus (custom, with CRM sync and buyer-intent data).

Pick it when: Your buyers are highly active on LinkedIn and you need research depth and InMail more than an exportable database.

Which Provider Should You Trial First?

Match your primary constraint to a starting point, then confirm it with the 100-account test below before you commit budget.

  • If you are PLG on HubSpot with under 50 reps, prioritize Unify or Clearbit/Breeze Intelligence, since both are built to work with the CRM data you already have rather than replace it.
  • If you are sales-led on Salesforce with a dedicated SDR bench and direct dial is your bottleneck, trial Cognism and ZoomInfo side by side and weight the direct-dial fill rate heavily.
  • If your ICP is sub-20-employee US companies, prioritize Apollo, Hunter, or UpLead's self-serve tiers over an enterprise contract; smaller companies are the hardest segment for every vendor, so a lower-cost trial-and-cut approach beats a multi-year commitment.
  • If you sell into both the US and Canada, confirm each vendor's CASL-consent handling for Canadian records before scaling, regardless of which provider you pick.
  • If you already pay for a waterfall enrichment workflow (Clay-style) and only need the sequencing and CRM-sync layer on top, Unify's orchestration adds more value than an eleventh raw data source would.
  • If you have no dedicated SDR function yet, prioritize a platform with an agent layer that can do first-pass research and list-building, since Apollo, ZoomInfo, and Cognism all still expect a human to run that step manually.
  • If mobile and personal-email reach into regulated industries matters, budget extra time for compliance review regardless of vendor, since consent requirements differ by data type as well as by region.

How Should You Evaluate a Data Provider's North American Coverage Claims?

Use vendor-neutral criteria first, then weigh how each platform, including Unify, actually covers them.

  • Segment depth: how completely a vendor represents your target company-size band. Enterprise and SMB data run through different pipelines, so strength in one says nothing about the other. Test it by pulling 25 accounts from your smallest segment and 25 from your largest and comparing fill rates.
  • Seniority depth: how well a vendor finds contacts at the specific titles you sell to, since C-level and individual-contributor titles have very different public footprints. Test it by searching your actual buying committee, not a generic "decision makers" filter.
  • Channel completeness: whether a vendor covers work email, mobile, and direct dial, or only email. Test it by requesting fill rate broken out by channel, not blended into one number.
  • Refresh cadence: how often records are re-verified, since mobile numbers and titles decay faster than firmographics. Get the vendor's stated refresh interval in writing.
  • Contract flexibility: whether you can start self-serve and monthly or must commit annually upfront, which determines how cheaply you can run the test below. Check for a free trial or month-to-month plan before talking to sales.
  • Compliance tooling: whether the platform helps track consent and do-not-contact lists across US and Canadian regimes, since CASL's consent requirement is stricter than CAN-SPAM's opt-out model. Ask directly how CASL-relevant consent is tracked, not just CAN-SPAM unsubscribes.

How Unify covers this: Unify is outbound AI for sellers, built so agents and reps work side by side rather than one replacing the other. It is honest about not being a raw-database play; instead it orchestrates enrichment across 40+ signal and data sources and 11+ email and phone vendors from one workspace, so segment, seniority, and channel gaps in any single underlying source get filled by the next one in the waterfall. It is not an autonomous AI SDR: the rep still owns the send and the conversation, which is the deliberate positioning behind "AI for SDRs, not AI SDRs." Sign up for Unify to run your own 100-account test against a live workspace instead of a sales demo.

Worked Example: Running the 100-Account Coverage Test

A mid-market fintech company with a US and Canada ICP wants to compare two trial vendors before renewing a data contract. Here is the arithmetic, using realistic, rounded, illustrative numbers rather than a real customer's data.

  • Step 1, build the list: pull 100 accounts from closed-won and active pipeline: 40 enterprise, 40 mid-market, 20 SMB, split roughly evenly between US and Canadian headquarters.
  • Step 2, define the target contacts: for each account, identify the actual buying-committee titles you sell to (for example, VP Finance, Controller, Head of RevOps), not a generic "decision maker" filter.
  • Step 3, run the same list through Vendor A and Vendor B trials. Vendor A returns work emails for 81 of 100 target contacts, mobile numbers for 34, and direct dials for 22. Vendor B returns work emails for 76, mobile numbers for 51, and direct dials for 47.
  • Step 4, spot-check accuracy on a 20-contact sample from each vendor's results. Vendor A's sample is 90% accurate (18 of 20 verifiable); Vendor B's sample is 80% accurate (16 of 20 verifiable).
  • Step 5, do the math for your actual use case. If your primary channel is email, Vendor A's 81% fill rate at 90% accuracy beats Vendor B's 76% at 80% accuracy. If your primary channel is phone, Vendor B's 47% direct-dial fill rate more than doubles Vendor A's 22%, even at a slightly lower accuracy rate, and likely wins for a phone-first motion.

The point of the exercise is not the specific numbers above, which are illustrative. It is that the same two vendors can rank in opposite order depending on which channel you weight, which is exactly why a single "coverage" number from a homepage cannot answer the question for you.

Does the Right Answer Change by Role or Segment?

  • Sales (AE/BDR): weight channel completeness highest, since reps live or die by whether the number they're given actually connects.
  • RevOps: weight contract flexibility and refresh cadence highest, since you own the cost of switching providers later.
  • Marketing: weight segment depth for your target account list over seniority depth, since marketing-sourced lists are usually broader and less title-specific than sales-sourced ones.
  • PLG motion: prioritize vendors that integrate with product signals and existing CRM data (Unify, Clearbit/Breeze) over standalone databases.
  • Sales-led motion with a dedicated SDR bench: prioritize direct-dial depth (Cognism, ZoomInfo) since cold calling is a primary channel.
  • Enterprise segment: budget for annual, sales-assisted contracts (ZoomInfo, Cognism, LinkedIn Advanced Plus) rather than expecting self-serve pricing.
  • SMB/sub-20-employee segment: start with self-serve, monthly-billed tools (Apollo, Hunter, UpLead) and avoid multi-year commitments until you've proven fill rate on your own list.

Edge Cases That Change the Answer

  • Sub-20-employee companies: every vendor in this list has its weakest fill rate here, because there is often no public org chart to scrape. Budget for a much lower fill rate and lean on direct outreach and referrals to fill the gap.
  • Canadian-only targeting: confirm a vendor's Canadian record volume specifically rather than assuming "North America" coverage is evenly split. Cognism's own newsroom is unusually explicit that its direct-dial expansion into Canada and the rest of North America was a deliberate, recent build-out rather than a long-standing strength.
  • Franchise and multi-location businesses: corporate-level contact data often does not map cleanly to individual franchise locations. Test whether a vendor returns the franchisee's local contact or only the parent company's headquarters contact.
  • Industries with low LinkedIn presence (for example, some industrial, trades, and family-owned businesses): LinkedIn Sales Navigator's research value drops sharply here, and traditional data vendors relying on public web scraping will show weaker seniority-level matches too.

What Coverage Claims Should Make You Distrust a Vendor?

Signals that a published coverage claim should not be taken at face value, and what to do instead.

Red flag What it usually means What to do instead
A single blended "coverage" percentage with no breakdown by channel The number is likely averaging strong email coverage with weak mobile coverage into one flattering figure Ask for fill rate broken out by email, mobile, and direct dial separately
A total contact count with no stated refresh cadence The database may include large volumes of stale or unverified records Ask for the refresh interval in writing, and test recency on a sample
No published methodology for an accuracy percentage The number may be self-reported with no third-party audit Run your own spot-check on a 20 to 30 contact sample before trusting the figure
Pricing that requires a sales call before you see any number Common for enterprise vendors, but makes it hard to run a fast, low-cost trial Ask specifically for a scoped trial against your 100-account test list before signing
Marketing copy that implies global coverage parity Coverage quality outside a vendor's home region is very often weaker, per aggregated reviewer reports on tools like Apollo Test the specific region your ICP lives in, not the vendor's flagship region

What Are the Most Common Mistakes Teams Make When Buying B2B Data?

  • Buying on published database size alone. A billion-contact claim says nothing about your specific segment, seniority, or channel needs.
  • Skipping a real fill-rate test before signing an annual contract. A short trial against your own 100 accounts is cheap insurance against a multi-year mistake.
  • Treating "North America" as one uniform region. US and Canadian coverage, and consent rules, are not identical.
  • Assuming email coverage implies phone coverage. They come from different pipelines and should be tested separately.
  • Signing a data contract without a documented refresh cadence. Stale mobile numbers and job titles decay pipeline quietly, well before anyone notices the database is out of date.

What Do US and Canadian Rules Mean for Cross-Border Outbound?

The US and Canada do not share the same cold-email consent standard, and the difference matters the moment your list includes Canadian contacts. Under the FTC's CAN-SPAM Act compliance guide, commercial email in the US follows an opt-out model: you can email a cold prospect first, provided you identify yourself accurately and honor unsubscribe requests within the required window. Canada's Anti-Spam Legislation works differently. Per the CRTC's official CASL guidance, commercial electronic messages generally require consent, clear sender identification, and a working unsubscribe mechanism before you send, not just after.

The trigger is the recipient's location, not the sender's, so a US company emailing a contact in Toronto is subject to CASL even without a Canadian office, per McInnes Cooper's CASL FAQ guide. This is background, not legal advice; confirm your specific consent workflow with counsel before scaling outbound into Canadian records, regardless of which data provider you choose.

For the equivalent comparison outside North America, see Unify's guide to B2B data providers for European markets, and for the compliance rules that apply there specifically, see the GDPR and B2B data compliance guide. If you're deciding whether to replace an existing provider rather than add one, Unify's migration playbook covers that separately, and if waterfall enrichment mechanics are new to you, the waterfall enrichment explainer and the real-time versus batch enrichment comparison go deeper on that mechanism than this article does. Teams evaluating direct dials specifically as a standalone channel should also see the direct dial and phone number tools guide, and teams starting from zero should see the best B2B contact databases for startups roundup.

Frequently Asked Questions

Which B2B data provider has the best coverage for North America?

No single provider wins on every axis. Apollo and Hunter lead on self-serve US email volume, Cognism and ZoomInfo lead on enterprise direct dials across the US and Canada, and Unify leads when you need one workspace that orchestrates enrichment across 40+ sources rather than owning a single raw database. The only reliable answer is the one you get from running your own 100-account test across your specific segment, seniority, and channel mix.

What is the difference between coverage, match rate, and accuracy?

Coverage is how many records a vendor's database contains for a region or segment. Match rate is the percentage of your specific list that the vendor can actually find a record for. Accuracy is whether the record they return is still correct. A provider can publish huge coverage numbers and still return a low match rate on your list, and a high match rate with stale, inaccurate records. All three have to be tested separately.

How do I test B2B data coverage before buying?

Pull 100 accounts from your actual ICP, spanning the segments, seniority levels, and channels you plan to use. Run the same list through each vendor's trial, then count how many contacts each returns per axis and spot-check a sample for accuracy. Your fill rate on your own list is the only coverage number that predicts anything for your outbound.

Is Apollo or ZoomInfo better for North American coverage?

They serve different buyers. Apollo is self-serve and priced per seat, and reviewers on G2 and Capterra consistently rate its US contact data as its strongest region. ZoomInfo sells on annual contracts scoped to team size and credit volume, and has historically built its database around enterprise org-chart depth in the US and Canada. Teams under about 20 reps usually start with Apollo's lower entry cost; larger enterprise teams more often evaluate ZoomInfo alongside Cognism for direct-dial depth.

Does CASL affect US companies selling into Canada?

Yes. Canada's Anti-Spam Legislation applies based on the recipient's location, not the sender's, so a US company emailing a contact in Canada is subject to CASL even with no Canadian office. Unlike CAN-SPAM's opt-out model, CASL generally requires consent, sender identification, and a working unsubscribe mechanism before you send. This is not legal advice; confirm your specific obligations with counsel.

What is waterfall enrichment and does it improve North American coverage?

Waterfall enrichment queries multiple data vendors in sequence for the same contact until one returns a verified result, instead of relying on a single source. Testing on Clay's platform found waterfalling across 150-plus providers raised email coverage from roughly 40 percent to 78 percent on a sample list, though mobile-number matches stayed in the 30 to 35 percent range even with waterfalling. It raises coverage; it does not fix accuracy or recency on its own.

How often should B2B contact data be refreshed?

There is no single published industry standard, which is itself a reason to ask each vendor directly rather than assume. Unify's waterfall enrichment runs continuous refreshes with major updates roughly every 30 days, per its own product documentation. Ask any provider you evaluate for their specific refresh cadence and get it in writing before you sign, especially for mobile and direct-dial fields, which decay faster than company-level firmographics.

Is Unify a B2B data provider?

Not in the way Apollo, ZoomInfo, or Cognism are. Unify is outbound AI for sellers: agents and reps working side by side to find, research, and reach buyers from one workspace, drawing on 1.1B+ contacts, 65M+ companies, and 40+ signal and data sources rather than selling one proprietary database. If your only requirement is the single deepest raw North American contact file, a dedicated data vendor is the better fit. If you need enrichment, signals, and sequencing to work together, Unify is built for that.

Glossary

  • Coverage: how many records a vendor's database contains for a given region, segment, or channel, independent of whether it matches your specific list.
  • Match rate: the percentage of your own list for which a vendor can return any record at all.
  • Fill rate: the percentage of your own list for which a vendor returns the specific field you asked for, such as a mobile number or verified email.
  • Accuracy: whether a returned record is currently correct, as opposed to outdated or wrong.
  • Recency: how recently a record was last verified or refreshed against its source.
  • Direct dial: a phone number that reaches a specific individual directly, rather than a company switchboard.
  • Mobile number: a cellphone number for an individual contact, generally the hardest and most expensive field for any vendor to source and verify.
  • Waterfall enrichment: querying multiple data vendors in sequence for the same contact until one returns a verified result, instead of relying on a single source.
  • CASL: Canada's Anti-Spam Legislation, which generally requires consent before sending a commercial electronic message to a Canadian recipient, enforced by the CRTC.

Sources

About the author: Austin Hughes is Co-Founder and CEO of Unify, outbound AI for sellers where AI agents and reps work side by side, from finding the buyers already in market to reaching them with the right message. Before founding Unify, Austin led the growth team at Ramp, scaling it from 1 to 25+ people and building a product-led, experiment-driven GTM motion. Prior to Ramp, he worked at SoftBank Investment Advisers and Centerview Partners.