Choosing data and enrichment providers: coverage, accuracy, compliance and cost by region
No provider is best everywhere. How to evaluate Apollo, ZoomInfo, Clearbit, Lusha, Kaspr and regional sources on your own accounts, and why a waterfall across several beats any single choice.
07 Feb 2026 · 2 min read · by HeiSyn
Data providers sell coverage and every one claims the most. The truth is regional and segment-specific: a provider excellent for software companies in one market can be poor for manufacturers in another. The only evaluation that matters is on your own target accounts, and the practical answer is usually several providers in a waterfall rather than one contract.
Test on your own list
Take two hundred target accounts and two hundred target people you can verify. Run each provider. Measure: coverage (how many found), accuracy (how many correct, checked by hand on a sample), freshness (how many have moved role), and email verification rate. Do this by region and by segment. The results will surprise you and they will decide the contract.
The usual strengths
Apollo: broad coverage and a workable price for volume, with a built-in sequencer. ZoomInfo: deep on larger companies in the major markets, priced accordingly. Clearbit: strong on company firmographics and website de-anonymisation. Lusha and Kaspr: good for direct dials and LinkedIn-side enrichment. Regional providers often beat all of them in their home markets.
Compliance
Where the data comes from and whether it can be used for outreach depends on the region's rules — consent-based regimes treat scraped personal data differently from business-contact data. Ask each provider for its lawful basis per region and its opt-out handling. Your outreach is only as compliant as its data source.
Use a waterfall
In Clay or your orchestrator, try the cheapest accurate provider first, fall through on misses, verify at the end. Track hit rate and cost per verified contact by provider monthly, and reorder the waterfall as the numbers change. Providers should be a configuration, not a dependency.
Questions people ask next
- How often should we re-run the provider test?
- Annually, or when reply and bounce rates shift in a region. Provider coverage changes as they acquire data and as your target market changes. The test takes a day and can save a year's contract.
- Should we buy annual contracts?
- Only after a paid monthly trial has shown the provider performs on your lists. Annual discounts are tempting; a year of a provider that misses your market is expensive at any discount.
- Do we need a provider for company data and another for contacts?
- Often, yes: providers strong on firmographics are not always strong on verified contact details, and the reverse. The waterfall handles it — company enrichment from one, contact finding from another, verification from a third.
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