While we don't verify specific claims because reviewers' opinions are their own, we may label reviews as "Verified" when we can confirm a business interaction took place. Read more

To protect platform integrity, every review on our platform—verified or not—is screened by our 24/7 automated software. This technology is designed to identify and remove content that breaches our guidelines, including reviews that are not based on a genuine experience. We recognise we may not catch everything, and you can flag anything you think we may have missed. Read more

Review summary

Based on reviews, created with AI

Most reviewers were somewhat happy with their experience overall. Consumers appreciate the user-friendly interface and the efficiency of the platform in creating targeted lists. People find it easy to identify the right contacts and move into outreach, saving time compared to gathering information from multiple sources. The technology is considered useful for lead generation and business development, with many consumers highlighting its role in improving their workflow. Reviewers also praise the quality of the data provided, especially for EMEA contacts. However, some reviewers express concerns about how their contact information was obtained and used. Some consumers report receiving unsolicited calls on their personal numbers after their data was listed on the platform. Some people report difficulties in getting their information removed from the system. There are also mixed opinions regarding the accuracy of the contact information.

Based on these reviews

Rated 4 out of 5 stars

Generally, I find Cognism to be a good product; despite the sales pitch, their data is *not* flawless and sometimes, like other platforms, it's outdated - there is no getting around that because of... See more

Rated 5 out of 5 stars

Cognism has been a game changer for my LATAM outbound. The contact data is reliable, the platform is easy to use, and it saves me a ton of time compared to piecing lists together from multiple so... See more

Rated 5 out of 5 stars

Massive database of C-Suite contact info for companies of all sizes and industries throughout Europe. Importantly, their database is really well structured and fields are labelled really thoroughly w... See more

Rated 5 out of 5 stars

Cognism has been a very reliable tool for our outbound efforts. The data quality is strong, especially for EMEA contacts, and the platform is easy to use. GDPR compliance is a big advantage for Europe... See more

Rated 5 out of 5 stars

I have been using Cognism as part of my business development strategy. The platform makes it easier to identify and reach the right decision-makers, based on Job titles, size of the company and mo... See more

Rated 1 out of 5 stars

I received a call from a company on my private TPS-registered mobile number from someone wanting to sell me services related to my job. They told me that they got my number from Cognism. This is the 2... See more

Rated 1 out of 5 stars

I've been repeatedly cold called by the same old tech companies trying to sell the same useless info. To prevent wasting my time any further, I asked them how they got my number - it was scraped from... See more

Rated 1 out of 5 stars

Ghastly company who illegally stole my details I now get 20 or thirty nuisance sales calls a day. When asked by callers where they got my data from they all respond Cognism. I have slapped a subject a... See more

Rated 1 out of 5 stars

I'm a current user. The data is really limited and generally of poor quality. They talk about having 90%+ of mobiles in their sales process but that doesn't feed through their customers. The... See more

Rated 5 out of 5 stars

I have used Cognism for the past year and honestly, is the go-to software for Lead Generation. It basically has everything I need to get the most out of my leads. Also, the best part, is that customer... See more

Rated 5 out of 5 stars

Creating targeted lists is quick and intuitive. I use Cognism daily to build lists for cold calling, and the filtering options make it so easy to target the exact personas I need. It’s helped me stay... See more

Rated 5 out of 5 stars

About a month or two ago I was struggling to get contact information for certain companies. It made my work harder and it seemed impossible to break into some accounts. Thanks to Cognism I'm able to f... See more

Rated 1 out of 5 stars

Terrible company. Have my number incorrectly listed for someone who has a slightly similar name so i get marketing calls every single week for at least the last 2 years for this person. I have emailed... See more

Rated 5 out of 5 stars

Having worked with various data providers, I can confidently say that Cognism provides some of the most accurate and compliant data in the industry. The Diamond Data feature ensures I'm getting the b... See more

Rated 1 out of 5 stars

Company gathered my info and sold it to make money without my permission. I am not receiving emails and phone calls (on my personal line) from B2B sales every day. I tried to delete my data but t... See more

Rated 1 out of 5 stars

Selling my personal data without my permission - completely disregarding the fact that I have opted out of caller preference service. How is this allowed? Cognism have asked for more details fro... See more

Rated 1 out of 5 stars

Cognism appears to sell contact data that is inaccurate. My phone number was incorrectly associated to a person unknown to me, which led to a high volume of unsolicited calls. Based on this experien... See more

Rated 5 out of 5 stars

We’ve been using Cognism for several months now, and it has significantly improved our outbound prospecting. The data quality is excellent, accurate contact details, verified emails, and helpful i... See more

Rated 5 out of 5 stars

The Cognism chrome extension just made finding lead contact details so easy. There were number of leads that had no contact details on other apps but I was able to find it only on cognism and it reall... See more

Rated 1 out of 5 stars

Going legal All of a sudden being inundated to my personal number with sales calls from people from Linkedin. When asking them how they got my number they have 1 thing in common. Lusha. Linkedin... See more

Rated 1 out of 5 stars

Just found out you've been selling my personal phone number, which is never used for work purposes, for business to business cold calling. Inappropriate and a breach of GDPR. I dread to think where yo... See more

Rated 1 out of 5 stars

This company has completely violated my privacy. Since they irresponsibly sold my private number without my consent, I’ve been bombarded with calls. I’ve already asked to be removed from their datab... See more

Rated 1 out of 5 stars

Somehow, this company obtained my private phonenumber and sold it for sales purposes to other businesses that are now targeting me. I never gave any consent for this, and it is clearly not in line wit... See more

Rated 1 out of 5 stars

Much like other reviews, this company have somehow got hold of my private, personal mobile number and have sold it to companies who are using it to cold call me. I've submitted a data deletion req... See more

Rated 1 out of 5 stars

They have been giving out my personal number for work purposes, without my consent. I'm getting spammed on my personal number. Lets be clear - I will never buy products from someone calling my per... See more

Rated 1 out of 5 stars

The data on cognism is nowhere near as good as other vendors. I have personally used two others and the access to valid data is far greater. Also, their sales tactics and terms are shady. They will re... See more

Rated 1 out of 5 stars

This company has gotten hold of my private telephone number, without consent. The data is now sold to companies who are contacting me for business. I am very certain that this data has not been retrie... See more

Rated 2 out of 5 stars

Clean UI and solid EU data coverage, but enrichment quality has been hit-or-miss lately, too many bounced emails for the price point.

Rated 1 out of 5 stars

Illegally sold my personal phone number without my consent! I now receive sales calls every other say, VERY annoying and against GDPR! I will report this officially.

Rated 5 out of 5 stars

platform is easy to use, the data is reliable, and it really helped streamline our prospecting process. It saved us time and made outreach more effective.

Rated 5 out of 5 stars

I have been using Cognism as part of my Job for a while now. I find it instrumental in my ability to find new leads and to improve my workflow. I definitely recommend! Training with Cognism is also am... See more

Rated 5 out of 5 stars

Best prospecting data tool on the market. Data (Phone numbers and email addresses) are vast and high quality. CRM integrations make work flow easy and simple to import data.

Rated 5 out of 5 stars

“Cognism is a game-changer for lead generation and sales prospecting! The platform provides highly accurate contact data, making it easy to reach decision-makers quickly. Its intuitive interface and p... See more

Rated 5 out of 5 stars

Cognism is a key tool in business development,helps from the marketing research previously done on the companies, until the moment we have to contact the lead. It is very mindful of Do Not Contact l... See more

Rated 5 out of 5 stars

Cognism has completely transformed how I build my pipeline. The data is clean, accurate, and up to date. Easily the best tool I've used for booking meetings consistently.

Rated 1 out of 5 stars

They somehow got hold of my personal number and have been selling this to companies to contact me directly. Not happy. MAKING AN ICO COMPAINT. Do not trust this company.

Rated 5 out of 5 stars

Cognism is an excellent tool for lead prospecting. It allows for me to efficiently and swiftly acquire the information I need in a straightforward manner. There a clear easy to use Ul, and the data an... See more

Rated 1 out of 5 stars

No idea how they came by my personal data, I may have entered into some agreement previously where I didn't read the T&C's and appreciate my personal details were going to be used/sold to Cognism. I... See more

Rated 5 out of 5 stars

I had a great experience using Cognism. It helps me manage and track my client leads, making me use my time more efficiently.

Rated 5 out of 5 stars

Cognism has been absolutely outstanding! The platform is incredibly easy to use and intuitive, which made onboarding seamless and quick. Within days, I was building a highly targeted sales pla... See more

Rated 1 out of 5 stars

Gave out my personal mobile number telling people it was a work line so get cold calls at all times of day and night on my personal phone.

Rated 5 out of 5 stars

Cognism is the best Sales Intelligence tool that I have used. The most important factor for a Sales Professional who does Outbound Prospecting is getting accurate data (phone numbers/email) and Cognis... See more

Rated 5 out of 5 stars

As someone in the fintech industry for some time, cognism provides me clean and accurate data for business development activities- ultimately saving time, money and energy. It is also compliant to loc... See more

Rated 5 out of 5 stars

The integration with salesloft is extremely helpful to schedule and create a list of leads that I would love to connect with. Very reliable data so far

Rated 1 out of 5 stars

Illegally stole my personal data and have sold it to cold callers. I get dozens on calls a week on my personal phone number while on maternity leave

Rated 5 out of 5 stars

We've been using Cognism for several months now, and it has completely transformed our outbound sales efforts. The platform is intuitive, the data quality is excellent, and the support team is res... See more

Rated 5 out of 5 stars

There are alot of lead generation and data companies out there and after alot of research we went with Cognism, we have been really pleased with the results.

Rated 5 out of 5 stars

I’ve had a great experience using Cognism! The platform has significantly streamlined our lead generation process and helped us connect with high-quality prospects more efficiently. The data accuracy... See more

Rated 1 out of 5 stars

Cognism have acquired or created false data about me by associating my email address with somebody else who has a finance management responsibility, hence I'm getting deluged with finance related ema... See more


Company details

  1. Software Vendor
  2. Internet Marketing Service
  3. Software Company

Written by the company

Cognism is the leading provider of European B2B data and sales intelligence. Ambitious businesses of every size use our platform to discover, connect, and engage with qualified decision-makers faster and close more deals. Headquartered in London with global offices, Cognism’s contact data and contextual signals are trusted by thousands of revenue teams to eliminate the guesswork from prospecting.


Contact info

3.4

Average

TrustScore 3.5 out of 5

344 reviews

5-star
4-star
3-star
2-star
1-star

Hasn’t replied to negative reviews

How this company uses Trustpilot

See how their reviews and ratings are sourced, scored, and moderated.

Companies on Trustpilot aren't allowed to offer incentives or pay to hide reviews. Reviews are the opinions of individual users and not of Trustpilot. Read more

Rated 1 out of 5 stars

Cognism getting people's details without consent

I've been repeatedly cold called by companies trying to sell something to me. I asked them how they got my number and they told me it was from Cognism which took it from LinkedIn. When I asked LinkedIn what my number is used for, this use wasn't mentioned in their policy. Something just isn't right here...

9 February 2026
Unprompted review
Rated 5 out of 5 stars

Cognism has been a game changer

Cognism has been a game changer for my LATAM outbound.

The contact data is reliable, the platform is easy to use, and it saves me a ton of time compared to piecing lists together from multiple sources. I especially love how quickly I can find the right people at the right companies and move straight into outreach without spending hours validating basics.

If you do high volume prospecting in LATAM and need strong data coverage, I genuinely recommend it.

8 February 2026
Unprompted review
Rated 1 out of 5 stars

Didn't give consent for my data to be used

I received a call from a company on my private TPS-registered mobile number from someone wanting to sell me services related to my job. They told me that they got my number from Cognism. This is the 2nd call I've had of this nature. How did that happen? I never consented to give my data to Cognism - especially not my personal mobile number. In their LinkedIn header they make reference to 'compliant' and 'GDPR Compliance Software' - it seems that there's been a breach. I've made a report to the ICO.

28 January 2026
Unprompted review
Rated 5 out of 5 stars

As someone in the fintech industry for…

As someone in the fintech industry for some time, cognism provides me clean and accurate data for business development activities- ultimately saving time, money and energy. It is also compliant to local UK and EU GDPR regulations.

19 January 2026
Unprompted review
Rated 5 out of 5 stars

Cognism has been a very reliable tool…

Cognism has been a very reliable tool for our outbound efforts. The data quality is strong, especially for EMEA contacts, and the platform is easy to use. GDPR compliance is a big advantage for European teams, and customer support has been responsive whenever needed. Overall, a solid solution for B2B prospecting.

15 January 2026
Unprompted review
Rated 5 out of 5 stars

A Time-Saving Tool for Effective Prospecting

As a Business Development Representative, Cognism has become an essential tool in my daily workflow. What I appreciate most about the platform is how much time it saves me when prospecting. It allows me to quickly find accurate contact details, including direct phone numbers (both personal and office lines) as well as email addresses, which significantly improves my outreach efficiency.

One of Cognism’s strongest features is its seamless integration with LinkedIn. I can access prospect information directly from LinkedIn without even opening the Cognism platform, which makes the experience extremely smooth and convenient during my prospecting sessions.

Additionally, the platform makes it easy to navigate within a company and identify other relevant prospects, helping me expand my outreach beyond a single contact. Overall, Cognism is a reliable and time-saving solution that strongly supports my prospecting and business development efforts.

13 January 2026
Unprompted review
Rated 4 out of 5 stars

Good B2B data quality, strong tool with room to improve

Cognism is a practical and well-structured sales intelligence platform that supports daily B2B prospecting effectively. The company data and decision-maker insights are largely reliable and help speed up research and outreach preparation. The browser extension is intuitive and fits nicely into common sales workflows.

There are, however, some minor drawbacks. From time to time, contact details are outdated, and the extension performance could be smoother. Additionally, more granular control over data exports and filtering would improve usability for advanced users.

Overall, Cognism is a valuable tool for sales and business development teams. A few improvements in data consistency and performance would easily justify a full 5-star rating.

2 December 2025
Unprompted review
Rated 5 out of 5 stars

platform is easy to use

platform is easy to use, the data is reliable, and it really helped streamline our prospecting process. It saved us time and made outreach more effective.

12 January 2026
Unprompted review
Rated 1 out of 5 stars

Shit data

Shit data - terrible platform - I was miss sold by a sales person and it’s been terrible for my business. I hope that someone sees this and doesn’t buy

4 July 2025
Unprompted review
Rated 1 out of 5 stars

Avoid them

Cognism appears to sell contact data that is inaccurate. My phone number was incorrectly associated to a person unknown to me, which led to a high volume of unsolicited calls. Based on this experience, I do not trust their data quality or their handling of complaints.
Avoid them!

18 December 2025
Unprompted review
Rated 5 out of 5 stars

Easy connect

The integration with salesloft is extremely helpful to schedule and create a list of leads that I would love to connect with. Very reliable data so far

15 October 2025
Unprompted review
Rated 1 out of 5 stars

Cognism do not respond to data requests - they sell false data about me.

Cognism have acquired or created false data about me by associating my email address with somebody else who has a finance management responsibility, hence I'm getting deluged with finance related emails from companies that have bought contact details off them. I have made two Subject Access Requests to them on 04/07/2025 and 28/10/2025 but have had no response.
I have tried to use their forms to resolve this but they require Business and LinkedIn details but I have none of those as I am not a business and do not have a LinkedIn account, and without those I cannot submit the forms.

27 November 2025
Unprompted review
Rated 1 out of 5 stars

Data Selling

I have just found out they have been selling my data. I am getting daily calls. Also the online form is not working to submit a request to have my data removed.

18 November 2025
Unprompted review
Rated 1 out of 5 stars

Selling my personal data

Just found out you've been selling my personal phone number, which is never used for work purposes, for business to business cold calling. Inappropriate and a breach of GDPR. I dread to think where you've scraped that data from but it makes me very wary about the legitimacy and extent of the records you are selling.

28 October 2025
Unprompted review

The Trustpilot Experience

Anyone can write a Trustpilot review. People who write reviews have ownership to edit or delete them at any time, and they’ll be displayed as long as an account is active.

Companies can ask for reviews via automatic invitations. Labeled Verified, they’re about genuine experiences.

Learn more about other kinds of reviews.

We use dedicated people and clever technology to safeguard our platform. Find out how we combat fake reviews.

Learn about Trustpilot’s review process.

Here are 8 tips for writing great reviews.

Verification can help ensure real people are writing the reviews you read on Trustpilot.

Offering incentives for reviews or asking for them selectively can bias the TrustScore, which goes against our guidelines.

Take a closer look