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B2B Data Providers

LeadGenius

Managed B2B data service combining human researchers and tech for custom lead lists

★★★★☆4.3 on G2 (14+ reviews)

Overview

LeadGenius is a custom B2B data platform that blends proprietary technology with human researchers to build verified contact and account datasets to a customer's exact criteria, rather than searching a pre-built database. Its services, custom lead generation, lead enrichment, and managed email outreach, are typically sold as enterprise annual contracts.

Best for: Enterprises needing hard-to-find, human-verified data in niche markets or geographies that self-serve databases don't cover well.

Key features

Human-verified custom lead generation built to spec
Lead enrichment with verified emails and direct dials
Buying committee mapping across EMEA, LATAM, and APAC
GDPR, CCPA, and LGPD compliant sourcing
Managed email outreach service
Account-based data curation for niche or underserved markets
Dedicated research team support
Custom firmographic and technographic data builds

Pricing

PlanPriceIncludes
Starter Implementation$18000
/yr
Basic custom data enrichment, minimum ~$5,000/mo
Professional Implementation$50000
/yr
Comprehensive data services with dedicated team support
EnterpriseCustomFully custom scope and volume

Pricing changes often. Verify current pricing on the vendor site before you buy.

LeadGenius demo

Pros and cons

Pros

  • Human verification improves accuracy on hard-to-find contacts
  • Strong coverage in EMEA, LATAM, and APAC buying committees
  • Compliance-first sourcing
  • Handles custom, non-standard data requests databases can't

Cons

  • Very high cost, five to six figures annually
  • Slow delivery, days to weeks per request
  • No self-serve platform or public API for instant results
  • Human researcher capacity limits scale

Integrations

SalesforceHubSpotMarketoCSV/API delivery

Top LeadGenius alternatives

Links

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Reviewed July 2026. Data compiled from public sources; ratings via G2.