B2B Lists vs Datanyze: List Broker or Chrome Extension?
Your SDR manager needs 500 VP-level contacts in manufacturing by Friday. Do you buy a bulk CSV from a list broker, or have a rep reveal them one at a time through a Chrome extension? That's the core tension here - two tools from completely different eras of B2B data. One ships a static file. The other is credit-based and drip-feeds contact reveals. We've used both models, and neither ages particularly well.
30-Second Verdict
- Use B2B Lists if you need a one-time, hyper-targeted list - every CFO in manufacturing in Texas - and you're okay with a static CSV that starts decaying immediately.
- Use Datanyze if you're a solo rep on a tight budget who prospects one contact at a time from a browser and cares about technographic data.
- Skip both if you need more than 160 contacts/month with verified data that doesn't go stale. A self-serve database with real-time verification and bulk export will outperform either model at a fraction of the cost.
Feature Comparison at a Glance
| Dimension | B2B Lists | Datanyze | Winner |
|---|---|---|---|
| Model | Bulk CSV broker | Chrome extension | Datanyze (more flexible) |
| Database | 60M+ U.S. records | 120M people | Datanyze |
| Pricing | Quote-based (~$0.15-$0.60/record) | $29-$55/mo ($21-$39 annual) | Datanyze (transparent) |
| Data freshness | Static (decays fast) | On-demand reveal | Datanyze |
| Verification | No built-in verification | "Datanyze data guarantee" | Datanyze (marginally) |
| Technographics | None | Tech stack tracking | Datanyze |
| Best for | One-time bulk lists | Solo prospecting | Depends on workflow |
Here's the honest take: if your average deal size sits below five figures and your team runs fewer than 200 contacts per month, neither of these tools justifies the tradeoff. You're either overpaying for stale data or waiting months to build a usable pipeline.
What Is B2B Lists?
B2B Lists is a traditional list broker sitting on 60M+ U.S. business records, with a heavy focus on executive-role contacts - CEOs, VPs, owners, managers. You specify what you need by industry, geography, and title, and they deliver a file, typically Excel or CSV. They position their offering as "originally sourced" data.
Pricing isn't published. You call or email for a quote. Based on comparable list brokers, expect $0.15-$0.60 per record depending on volume, with minimum orders typically around $300.
The tradeoff is straightforward: you get a bulk file fast, but there's no real-time verification layer. That CSV starts going stale the moment it hits your inbox, and once you've bought it, you're responsible for cleaning, verifying, and maintaining it inside your own stack. We've seen teams burn through sender reputation in weeks because they loaded an unverified broker list straight into their outbound sequences.
That broker CSV starts decaying the second it hits your inbox. Prospeo's 300M+ profiles refresh every 7 days - not 6 weeks - with 98% email accuracy and built-in verification. 500 contacts cost ~$5 instead of $220-$300.
Stop paying list-broker prices for data that expires in months.
What Is Datanyze?
Datanyze takes the opposite approach. It's a Chrome extension owned by ZoomInfo (acquired in September 2018) that lets you reveal contact info one person at a time while browsing company websites or professional profiles. The database covers 120M people, 84M email addresses, and 63M direct dials. It also tracks technology stacks across companies, which is useful if you're targeting prospects based on the software they use - though in our experience, most SDRs never touch that feature.
Pricing is credit-based: Pro 1 runs $29/mo for 80 credits, Pro 2 is $55/mo for 160 credits ($21/mo and $39/mo respectively on annual billing). Each credit reveals one contact, working out to roughly $0.34-$0.36 per credit on monthly billing. There's also a 90-day free trial with 10 credits/month - barely enough to evaluate the tool.
G2 reviewers give it 4.1/5 across 446 reviews, mostly praising the extension workflow. But the complaints are consistent: poor customer support, billing frustration, and outdated data. Trustpilot paints a harsher picture at 1.9/5 across 17 reviews, with users flagging auto-renewal issues and wrong contact info. The consensus on r/sales threads mirrors this - people like the concept but get frustrated when half their reveals bounce.
Look, there's one thing you absolutely need to know: if you cancel, contacts you revealed during your subscription get locked. You'd need to resubscribe to access them again. Export everything before canceling.
The Real Cost of 500 Contacts
Let's make this concrete. Your team needs 500 verified emails to load into a CRM or outbound sequence.
| Source | Cost for 500 | Verification | Freshness |
|---|---|---|---|
| B2B Lists | ~$100-$300+ (often $300 minimum) | None guaranteed | Static CSV |
| Datanyze Pro 2 | ~$220 (4 months) | "Datanyze data guarantee" | On-demand |
| Prospeo | ~$5 | 98% verified | 7-day refresh |
B2B contact data decays roughly 22.5% annually, with 23-30% of email addresses going stale each year. That purchased list of 500? By month six, 60-75 of those emails are dead - torching your sender reputation in the process. Datanyze's on-demand reveals are fresher, but at 160 credits/month, you're waiting about four months to hit 500 contacts and paying $220 for the privilege. In our testing, the decay hits harder than the stats suggest because job changes cluster around Q1 and Q3.
Why Self-Serve Databases Win
Both B2B Lists and Datanyze force you into a tradeoff - bulk scale with no verification, or credit-capped reveals with painful limits. The newer generation of self-serve databases eliminates that tradeoff entirely.
Prospeo, for example, gives you bulk export with real-time verification: 300M+ professional profiles, 143M+ verified emails, and 125M+ verified mobile numbers, all searchable with 30+ filters including buyer intent, technographics, and headcount growth. Every record refreshes on a 7-day cycle versus the 6-week industry average. No contracts, no credit lockouts if you cancel. The free tier gives you 75 verified emails and 100 Chrome extension credits every month, and paid plans start around $39/mo. At roughly $0.01 per email, 500 contacts costs about $5.
Native integrations with Salesforce, HubSpot, Instantly, and Lemlist mean contacts flow straight into your workflow without a manual CSV import step. For teams weighing B2B Lists vs Datanyze, the math points clearly toward a third path: self-serve platforms with built-in verification that don't cap your pipeline or lock your data behind a subscription wall.
If you're comparing options, start with a shortlist of sales prospecting databases and then validate the provider's data enrichment and lead enrichment capabilities before you commit.
Datanyze caps you at 160 reveals/month. B2B Lists ships a static file with zero verification. Prospeo gives you bulk export, 30+ search filters, and real-time verification - with a free tier of 75 emails and 100 extension credits. No contracts, no credit lockouts.
Build your 500-contact list in minutes, not four months.
FAQ
Which handles large campaigns better - B2B Lists or Datanyze?
Neither scales well past a few hundred contacts. B2B Lists delivers static CSVs that decay at 22.5% per year, and Datanyze caps you at 160 reveals per month. For campaigns requiring 500+ contacts, a self-serve database with real-time verification and bulk export is the practical choice.
Does Datanyze lock your contacts if you cancel?
Yes. Contacts revealed during a paid subscription become inaccessible after cancellation. You must export all data before your plan ends. This is a common complaint in user reviews and a dealbreaker for teams that switch tools frequently.
What's the cheapest way to get 500 verified B2B emails?
Prospeo costs roughly $5 for 500 emails at 98% accuracy with a 7-day data refresh cycle. Datanyze runs about $220 spread over four months. A traditional broker list typically costs $100-$300+ with no accuracy guarantee and immediate decay.