Cognism
Europe-first B2B data platform with the strongest GDPR and CCPA compliance posture in the industry, offering phone-verified mobile numbers through its proprietary Diamond Data program and access to over 400M+ contacts with exceptional coverage across EMEA markets.
Best GDPR Compliance — sales teams prospecting in European markets or operating in regulated industries requiring strict data compliance
Our Verdict
Europe-first B2B data platform with the strongest GDPR and CCPA compliance posture in the industry, offering phone-verified mobile numbers through its proprietary Diamond Data program and access to over 400M+ contacts with exceptional coverage across EMEA markets.
Rating Breakdown
Why Trust This Review
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Pros & Cons
Pros
- Best-in-class GDPR compliance with ISO 27001, ISO 27701, and SOC 2 certifications plus global DNC screening
- Diamond Data phone-verified mobile numbers deliver significantly higher connect rates for cold calling
- Strongest EMEA data coverage of any B2B data provider, ideal for European market prospecting
- Unrestricted data access under fair usage policy eliminates credit-counting anxiety
Cons
- Opaque pricing with no public rates — requires contacting sales for any pricing information
- North American data coverage is weaker compared to ZoomInfo and Apollo.io
- Annual contracts required with limited flexibility for scaling down
Full Review
Overview
Cognism has established itself as the compliance-first B2B data provider, particularly strong for organizations selling into European markets. Founded in 2015 and headquartered in London, the company holds ISO 27001, ISO 27701, and SOC 2 Type II certifications and screens data against 13 international Do-Not-Call lists — making it the safest choice for GDPR-sensitive prospecting.
The platform differentiates through Diamond Data, its phone-verified mobile number program that claims to increase connect rates by 3x compared to industry averages. With coverage spanning over 400 million contacts globally, Cognism offers particularly deep data in EMEA markets where competitors like ZoomInfo and Apollo have traditionally been weaker.
Key Strengths
- GDPR & CCPA Compliance: Built from the ground up as a compliant-first platform with ISO 27001, ISO 27701, and SOC 2 certifications, plus screening against global DNC lists
- Diamond Data: Phone-verified mobile numbers verified through a human research team, delivering significantly higher connect rates for cold calling
- European Data Coverage: The most complete EMEA data of any B2B provider, making it the top choice for organizations prospecting in Europe
- Intent Data (Bombora): Partnership with Bombora provides topic-based intent signals to identify companies actively researching relevant solutions
- Unrestricted Data Access: Flat-fee pricing with unlimited data views and exports under a fair usage policy, eliminating credit anxiety
Pricing Analysis
Cognism uses quote-based pricing with annual contracts. Based on third-party data:
- Grow (formerly Platinum): ~$1,500-$10,000/year for 1-3 users — Verified emails, direct dials, unverified mobiles, Chrome extension, CRM integrations
- Elevate (formerly Diamond): ~$2,550-$25,000+/year for 1-3 users — Adds Diamond Data (phone-verified mobiles), Bombora intent data, technographics, AI segmentation
- Enterprise: $30,000-$100,000+/year — Fully customized setup for large teams
A typical 5-user Grow deployment costs approximately $22,500/year, while 5 users on Elevate averages $37,500/year.
Who Is It Best For?
Cognism is ideal for B2B sales teams that prospect heavily in European markets, operate in regulated industries requiring strict GDPR compliance, or rely on cold calling and need verified mobile numbers. It is particularly strong for mid-market and enterprise companies with international sales operations.
The Bottom Line
Cognism is the clear winner for compliance-conscious organizations and teams selling into Europe. Diamond Data phone-verified numbers are a genuine differentiator for cold calling teams, and the unrestricted data access model eliminates the credit management headaches plaguing competitors. The pricing is opaque and tends to run higher than Apollo or Lusha, but for teams where GDPR compliance is non-negotiable, Cognism is worth the premium.
Alternatives to Cognism
Frequently Asked Questions
Yes, Cognism is widely regarded as the most GDPR-compliant B2B data provider. The platform processes data under legitimate interest with documented assessments, proactively notifies data subjects per Article 14 GDPR, screens against 13 international Do-Not-Call lists, and holds ISO 27001, ISO 27701, and SOC 2 Type II certifications. However, compliance is a shared responsibility — your own policies and data handling also play a role.
Diamond Data is Cognism proprietary phone-verified mobile number program. A dedicated human research team manually verifies that mobile numbers are correct and active, resulting in what Cognism claims is a 3x improvement in connect rates compared to standard B2B data. Diamond Data is available exclusively on the Elevate (formerly Diamond) plan.
Written by
Emily brings 7 years of data-driven marketing expertise, specializing in market analysis, email optimization, and AI-powered marketing tools. She combines quantitative research with practical recommendations, focusing on ROI benchmarks and emerging trends across the SaaS landscape.
Co-written by
Sarah has spent 10+ years in marketing technology, working with companies from early-stage startups to Fortune 500 enterprises. She specializes in evaluating automation platforms, CRM integrations, and lead generation tools. Her reviews focus on real-world business impact and ROI.
Final Verdict
Cognism scores 8.9/10
With a score of 8.9 out of 10, Cognism is a strong performer that delivers great value. It’s particularly well-suited for Best GDPR Compliance — sales teams prospecting in European markets or operating in regulated industries requiring strict data compliance.