Cognism

What Is Cognism?

Sales development representatives in Europe make roughly 60 cold calls to connect with a single qualified prospect, according to industry benchmarks that have worsened each year as mobile numbers in lead databases grew increasingly stale. Cognism was built to fix that specific problem.

Founded in London in 2015 by James Isilay, Cognism Limited (Companies House 09392705) is a B2B sales intelligence platform that indexes over 400 million contact profiles globally and verifies 70 million mobile numbers through a human phone-calling process it calls Diamond Data. The company holds $87.5 million in Series C funding, serves over 2,000 revenue teams, and has grown to roughly 600 employees. These numbers reflect a product that moved from startup to infrastructure for European outbound sales.

The core problem Cognism addresses is dual. First, most B2B contact databases are inaccurate; mobile numbers that were correct 18 months ago are wrong today. Second, European outbound teams face real legal risk from calling numbers on Do-Not-Call registers without systematic checking. Cognism's answer is a platform that handles both: verified data and compliance checking within the same prospecting workflow, rather than as separate post-export steps.

The platform is used primarily by sales development representatives building prospect lists, account executives enriching records, and revenue operations teams managing data quality within Salesforce or HubSpot. It sits in the same category as ZoomInfo, Lusha, and Apollo, but with a particular focus on UK and European regulatory compliance that US-headquartered alternatives treat as an edge case.

Key Features

Diamond Data — Phone-Verified Mobiles

Most B2B contact databases predict mobile numbers using AI models trained on known data. Cognism's Diamond Data tier goes further: human callers verify the number is active and belongs to the correct person before it is badged as Diamond. The result is a materially higher mobile connect rate. Cognism publishes benchmark data showing Diamond numbers outperform standard mobile data by double-digit percentage points in live campaigns.

For sales teams measuring their pipeline on booked meetings from cold calls, that difference is substantial. A team making 200 dials per week that improves connect rate from 6% to 12% books twice as many conversations from the same effort. The caveat is that Diamond Data coverage is not uniform across geographies. It is strongest in the UK, North America, and Western Europe, and thinner in Eastern and Southern European markets.

DNC Compliance Built Into Prospecting

The practical compliance feature that distinguishes Cognism from most competitors is DNC checking executed at the point of list-building rather than as a manual post-export process. When a sales rep exports a contact list from Cognism, the system has already checked those numbers against Do-Not-Call registers across the UK, relevant EU member states, the United States, and Australia.

This matters for European outbound teams because GDPR's restrictions on unsolicited direct marketing apply to calls, not just emails. A company calling a UK business contact who is registered on the TPS (Telephone Preference Service) faces ICO enforcement risk. Cognism's automated checking converts that compliance burden into a platform feature rather than a manual legal review process. It is not a legal guarantee, but it is a credible risk-reduction mechanism that is notably absent from many US-built data tools.

Native CRM Integrations

Cognism's Salesforce and HubSpot integrations are native and real-time, not webhook-based exports. Contact records created or enriched in Cognism populate directly into the CRM, including the Diamond Data badge status, intent signals, and firmographic fields. For revenue operations teams managing data hygiene, this eliminates the manual CSV export/import cycle that corrupts field formatting and loses source attribution.

The HubSpot integration supports bidirectional sync, so existing CRM records can be enriched with Cognism data without rebuilding the contact from scratch. The Salesforce integration supports custom field mapping, letting operations teams route Diamond Data fields into their existing Salesforce data model rather than building parallel structures.

Intent Data via Bombora

The Diamond package includes Bombora intent data, which identifies company accounts actively researching topics related to a seller's product category. A company that has shown elevated B2B data activity (reading multiple articles, downloading guides, visiting competitor sites) scores higher in Bombora's intent model and surfaces at the top of Cognism's prospecting view.

The practical effect is prioritisation: instead of building prospect lists from firmographic filters alone (industry, size, geography), sales teams can focus first on accounts showing active buying signals. The accuracy of intent data is imperfect: topic categories are broad and signal strength varies by industry. Even so, as a triage tool for large total addressable markets, it meaningfully reduces cold outreach to accounts with no immediate need.

Chrome Extension for Live Prospecting

Cognism's Chrome extension works on LinkedIn profiles and company websites, surfacing verified contact data without leaving the browser. For sales development reps who do live prospecting research rather than bulk list exports, the extension reduces context-switching between the browser and the main Cognism platform. The extension is available on the free tier, providing limited lookups without a paid subscription. It is the most accessible entry point to the platform for teams evaluating data quality before committing to a contract.

Pricing

Cognism has no published pricing and no self-serve trial. Every engagement starts with a sales call.

The company positions two primary packages: Platinum (verified email and mobile data, CRM integrations, standard DNC checking) and Diamond (adds phone-verified Diamond Data and Bombora intent signals). An optional Sales Companion AI layer sits on top of Diamond, providing account research preparation and AI-drafted outreach context.

Market feedback from buyers consistently puts Platinum-tier contracts in the $15,000-$25,000 per year range for small teams of 5-10 SDRs. Diamond contracts for similarly sized teams run $25,000-$50,000 annually. Larger enterprise deployments scale significantly above that. There are no monthly rolling contracts; Cognism sells annual commitments only.

The absence of a free trial is a genuine friction point. The Chrome extension provides limited data lookups that can inform a quality assessment, but meaningful evaluation requires engaging the sales process and negotiating pilot terms. For budget-conscious buyers accustomed to self-serve SaaS trials, this is a real barrier. It also means the total cost of evaluation includes sales team time before any purchase decision.

EU Compliance & Privacy

Cognism Limited holds ISO 27001 and SOC 2 Type II certifications. The company operates as a data controller under UK GDPR (the post-Brexit equivalent of EU GDPR, requiring the same substantive compliance obligations) and publishes a Data Processing Agreement for customers.

The DNC compliance checking covers UK TPS, CTPS, and equivalent registers in Germany, France, and other EU member states where outbound calling regulations are enforced. This is a meaningful differentiator for European B2B teams that cannot rely on US-built tools to understand the jurisdictional complexity of EU calling compliance.

For procurement teams running GDPR due diligence, Cognism's compliance documentation is substantive rather than token: they publish their data sources, retention policies, and lawful basis claims for the contact data they hold. The primary data source claim is that business contact information is publicly available and collected in accordance with B2B legitimate interests, a defensible position under GDPR's Article 6(1)(f) when used for genuine business-to-business contact.

Data is hosted in the EU. Enterprise contracts can specify data residency requirements and review Cognism's infrastructure subprocessor list.

Who It's Best For

If your sales team makes significant outbound cold calls and connect rates are a material constraint on pipeline, the Diamond Data phone-verification tier justifies the cost premium over unverified databases. The math is straightforward: if verified mobiles generate twice the connect rate, each SDR's output doubles for the same dial volume.

If your legal or compliance team has flagged outbound calling risk under GDPR or UK GDPR, Cognism's built-in DNC checking converts a manual compliance process into a platform feature, worth meaningful risk-reduction value regardless of data quality differences.

If you need a self-serve tool with monthly billing and a free trial, Cognism is the wrong product. The commitment required, both financially and in terms of sales process engagement, means it suits companies with existing outbound infrastructure and a defined budget for sales intelligence.

For European teams evaluating EU-native sales engagement tools more broadly, Lemlist and Woodpecker offer complementary capabilities: Lemlist for multi-channel email and LinkedIn sequencing (French company), Woodpecker for automated email outreach (Polish company). Both pair well with Cognism as a data source feeding into their sequencing platforms.

The Verdict

Cognism is the most credible European-headquartered option in B2B sales intelligence. Diamond Data phone verification is a genuine differentiator over AI-predicted alternatives, and the GDPR/DNC compliance infrastructure reduces real legal risk for European outbound teams. The limitations are significant: no self-serve trial, annual contracts only, and pricing that requires enterprise-level commitment. For revenue teams with established outbound operations and budget for serious data investment, Cognism earns its position. For smaller teams or those without defined outbound processes, the entry cost and sales friction make evaluation difficult.

Frequently Asked Questions

Is Cognism GDPR compliant?

Yes. Cognism Limited is a UK company subject to UK GDPR (which mirrors EU GDPR post-Brexit) and operates as a data controller with ISO 27001 and SOC 2 Type II certifications. The platform checks contacts against Do-Not-Call lists across the UK, EU member states, and other jurisdictions within the prospecting workflow. A Data Processing Agreement is available for enterprise customers.

How does Cognism compare to ZoomInfo?

Cognism's primary advantage over ZoomInfo is phone-verified mobile accuracy (Diamond Data) and purpose-built GDPR/DNC compliance for European outbound. ZoomInfo has a larger overall database and more mature US market coverage. For European revenue teams, Cognism typically delivers better mobile connect rates and lower legal risk from non-compliant dials.

Does Cognism have a free trial?

There is no self-serve free trial of the full platform. A free Chrome extension is available for limited prospect data lookup. A formal demo and sales qualification process is required to access the full Platinum or Diamond packages.

What is Diamond Data?

Diamond Data is Cognism's mobile phone verification tier, where human callers verify mobile numbers rather than relying on AI-predicted data. Verified numbers receive the Diamond badge, and Cognism publishes mobile connect rate data showing Diamond numbers outperform standard mobile data by a significant margin in live call campaigns.

Where is Cognism data hosted?

Cognism's platform is hosted within the EU. The company's UK entity (Companies House 09392705) operates as a data controller, and enterprise contracts can specify EU data residency requirements. The compliance page details the data processing infrastructure for due diligence purposes.