GetProspect vs Thomson Data: Which B2B Data Tool Actually Delivers?
You're comparing a self-serve Chrome extension to a custom list vendor - and that's the core tension here. This isn't a close call. It's a fundamentally different buying decision, because these two tools barely overlap in how they work, who they serve, or how they charge.
Here's where each one delivers, where both fall short, and what to use if accuracy is what you're really after.
30-Second Verdict
GetProspect is a SaaS email finder built for individual prospectors and small teams who want instant access, transparent pricing, and a Chrome extension workflow. Thomson Data is a custom data vendor that sells built-to-order contact lists - you talk to sales, wait 2-5 business days, and get a deliverable file.
GetProspect wins on accessibility and price transparency. Thomson Data wins on large-scale custom list building with technographic and firmographic filters. Neither is a clear accuracy leader. GetProspect tested at 64.6% valid emails in an independent benchmark of 2,500 contacts, and a Trustpilot reviewer reported 20%+ hard bounces from Thomson Data on two separate purchases.
What Each Tool Does
GetProspect is a B2B prospecting platform centered around its Chrome extension. You search its database or pull contacts while browsing professional profiles, verify emails, and export your lists via CSV/XLSX or the API. It holds a G2 rating of 4.0/5 across 41 reviews, with users praising ease of use and speed. GetProspect promotes a 200M+ contact database, which is in line with what most tools in this category publish. G2 doesn't even categorize Thomson Data as an email finder - it's listed under Market Research Services, which tells you how different these products are.
Thomson Data operates as a Data-as-a-Service provider. You don't log into a platform and search. You describe what you need, their team builds a custom list, and they deliver it in 2-5 business days. They advertise 323M+ profiles across 62M+ companies with 150+ data filters. Their Trustpilot rating sits at 4.4/5, though that's from just 10 reviews. They have zero G2 reviews.
GetProspect's 64.6% accuracy and Thomson Data's reported 20%+ bounces both put your sender reputation at risk. Prospeo's 5-step verification delivers 98% email accuracy across 300M+ profiles - with a 7-day refresh cycle that catches job changes Thomson Data's 90-day updates miss entirely.
Stop choosing between two tools that bounce - test 98% accuracy free.
Side-by-Side Comparison
| Category | GetProspect | Thomson Data |
|---|---|---|
| Model | Self-serve SaaS | Custom list vendor |
| Pricing | Free (50 valid emails/mo) - $399/mo | Contact sales (typically mid-four to five figures/yr) |
| Database | 200M+ contacts | 154M+ to 323M+ profiles (varies by source) |
| Accuracy | 64.6% (independently tested) | 90% claimed |
| Refresh | Email verification available | Every 90 days |
| Delivery | Instant | 2-5 business days |
| Compliance | GDPR | GDPR |
| Reviews | G2: 4.0/5 (41 reviews) | Trustpilot: 4.4/5 (10 reviews) |
| Integrations | API + CSV/XLSX export | Not specified |
How Does Data Accuracy Compare?
A Gartner study puts the cost of poor-quality data at about $12.9M per year. Both tools contribute to that problem in different ways.
A Reddit user ran the same 2,500-contact list through eight email finders. GetProspect returned 64.6% valid emails - mid-pack, behind Tomba at 76.9% and Findymail at 75.2%. That's a lot of wasted credits and bounced sequences. We've seen teams burn entire sending domains on sub-65% accuracy data, and the recovery takes months. If you want to reduce bounces fast, start with an email deliverability audit and a dedicated email reputation monitoring setup.
Thomson Data advertises "more than 90% accuracy and deliverability," but a Trustpilot reviewer reported over 20% hard bounces on two separate purchases. Thomson Data replaced the contacts, which is decent service - but you've already torched sender reputation by then. The damage is done before the replacement list arrives.
Their database also has conflicting size numbers that erode trust: one source lists Thomson Data at 75M verified contacts, another says 154M+, and Thomson Data's own homepage advertises 323M+. An older Trustpilot complaint alleges receiving only 37 companies after paying £1,000 for 267. Industry research estimates B2B data decays roughly 3% per month, and Thomson Data's 90-day refresh cycle means about 9% of records could be stale between updates. For cold email, that's the difference between a clean campaign and a deliverability crisis.
Who Should Pick Which
Pick GetProspect if you're an individual prospector or small team that needs instant, self-serve access to B2B emails. The pricing is transparent ($49-$399/mo), the Chrome extension is genuinely useful for quick list building, and you don't need to talk to a sales rep. Just know the accuracy won't match premium tools. If you're building lists from multiple sources, consider adding data enrichment to fill gaps and standardize fields.
Pick Thomson Data if you're an enterprise team buying large custom lists for ABM campaigns, you need technographic targeting, you have a procurement budget, and you don't mind a sales conversation plus a few days of lead time. Expect mid-four to five figures annually depending on list size and refresh needs. If you're running ABM, it helps to align your targeting with solid firmographic and technographic data and clean firmographic filters.
Skip both if your deal sizes sit below five figures. You probably don't need Thomson Data's enterprise list-building process, and you definitely can't afford GetProspect's 35% invalid rate eating into your sending reputation.
Here's the thing: weekly refresh cycles catch the job changes and role shifts that quarterly updates miss entirely. That's where Prospeo fits - 300M+ profiles with 98% email accuracy, a 7-day refresh cycle, and self-serve access starting free at 75 emails/month. Paid plans run about $0.01 per email with no contracts. Teams like Snyk cut bounce rates from 35-40% to under 5% after switching, and Stack Optimize maintains 94%+ deliverability across all client campaigns. If you want more options in the same category, compare against other sales prospecting databases and email list providers.
You shouldn't need a sales call and a 5-day wait for accurate B2B data. Prospeo gives you self-serve access to 300M+ profiles at $0.01/email with no contracts - the accessibility of GetProspect with accuracy neither tool can match.
Self-serve pricing, enterprise-grade data. No compromises.
FAQ
Is Thomson Data pricing public?
No. You'll need to contact their sales team for a custom quote. Based on market positioning and comparable vendors, expect mid-four to five figures annually depending on list size and refresh frequency.
Can GetProspect get my account restricted?
Yes. A validated G2 reviewer reported their professional account was restricted after aggressive extension use. Stick to conservative daily limits and follow platform guidelines to avoid disruptions.
What's a good alternative if neither tool is accurate enough?
Prospeo delivers 98% email accuracy with a 7-day data refresh cycle - far ahead of GetProspect's 64.6% benchmark and Thomson Data's reported 20%+ bounce rates. It's self-serve with a free tier of 75 emails/month, so you can test it without a sales call or contract commitment.