Cognism review

What Cognism actually does

Cognism sells B2B contact and company data: work emails, direct dials, mobile numbers and firmographics for decision-makers, delivered through a web app, a Chrome extension, CRM sync and a bulk data feed. A rep filters by title, seniority, industry, headcount, revenue, technology or location, builds a list, and pushes it into the CRM or the sequencing tool. Consumption runs on credits, where one credit reveals one contact; a contact already revealed can be exported again at no further cost, which matters more than it sounds when several reps work the same account list.

The part Cognism is known for is the mobile number set it markets as Diamond Data, where numbers go through an additional verification layer rather than being scraped and hoped for. That only matters if the team still picks up the phone, but for teams that do, it is the reason to look here first. The second differentiator is compliance posture: records are sourced against GDPR and CCPA rules and screened against European do-not-call registers, so European legal teams tend to approve it with less argument than they give American-first vendors. Around the prospecting app sit two other products - CRM enrichment, which repairs and refreshes decision-maker records already in Salesforce or HubSpot, and a data-as-a-service option that ships records by API or batch file for teams building their own systems.

Key features

The feature list is deliberately narrow: this is a data business, not a sales engagement suite.

• Human-verified mobile numbers released only after an additional checking layer
• Search filters covering seniority, role, industry, headcount, revenue, installed technology and location
• Intent, hiring, job-change and funding signals used to rank accounts by timing
• Chrome extension that reveals contact records while browsing LinkedIn or a company site
• CRM enrichment that fills empty fields and refreshes stale records on a rolling cycle
• API and batch delivery for teams loading data into a warehouse rather than a CRM

Who it's for

Cognism fits an outbound team of roughly five reps and upward whose territory is the UK, DACH, the Nordics or southern Europe, and whose motion still includes calling. If the compliance department has previously blocked a data vendor, the sourcing story here is the argument that usually gets past it. It also fits revenue operations teams whose CRM has quietly rotted - job titles three years old, half the mobile fields empty - because the enrichment product works on the existing database rather than requiring a fresh list build.

It is a poor fit for a founder doing solo prospecting, a two-person agency, or any team whose accounts sit mainly in the United States. The platform fee is annual and negotiated, the contract is annual, and there is no self-serve entry point, so the smallest viable purchase is well beyond what a small team would spend on data. Teams selling exclusively into North America will get more records per credit elsewhere.

How it compares

ZoomInfo remains the deeper database for North America and carries far more surrounding workflow tooling, but its European records are weaker and its compliance story gives EU legal teams more to argue about. Apollo undercuts everyone on price and bundles sequencing into the same subscription, which suits small teams, but its mobile numbers are unverified and the accuracy gap on live dials is the whole point of Cognism's premium. Lusha is the lighter, more self-serve option with published plans and a free tier, and is the sensible starting point for a team that has never bought data - it simply does not go as deep on European coverage or on the compliance screening. Against all three, Cognism's argument is narrow and specific: better dials in Europe, less friction with legal.

Verdict

This is a well-built data product with an unusually honest specialism. Teams calling into Europe report connect rates that justify the premium, the enrichment product genuinely repairs old CRM records, and support is responsive during onboarding rather than only during the sale. The caveat is structural rather than technical: coverage thins outside Europe, and the quote-only annual pricing with a platform fee on top of seats puts it out of reach for the small teams that would otherwise benefit most from better phone data. Buy it for a European calling motion with a real budget; look elsewhere for a US-centric or self-serve one.