BookYourData vs CompanyData.com (BoldData): Different Tools for Different Jobs
This comparison shouldn't exist - at least not the way most people expect it to. BookYourData is a contact list builder for outbound sales teams. CompanyData.com (formerly BoldData) is a registry-sourced company database for compliance, analytics, and data infrastructure. Comparing them is like comparing a Rolodex to a census bureau.
But people search for it, so let's break it down honestly.
30-Second Verdict
- Pick BookYourData if you're an SDR or agency buying verified contact emails and phone numbers for outbound campaigns. Pay-as-you-go, 97% accuracy guarantee, credits never expire.
- Pick CompanyData.com if you need registry-sourced company records at scale for KYC/KYB, analytics, or AI training datasets. 400M companies across 200 countries, sourced from official trade registers.
- Skip both if your core need is verified emails that land in inboxes at the lowest cost per lead. Prospeo delivers 98% email accuracy at ~$0.01/email - that's 25-40x cheaper per verified email than BookYourData.
BoldData Is Now CompanyData.com
BoldData rebranded as CompanyData.com in 2025. Same team, same data, same Dutch headquarters. You'll still see "BoldData" in older reviews and API docs, but it's the same product under a new name.
Side-by-Side Feature Comparison
| BookYourData | CompanyData.com | |
|---|---|---|
| Database | 500M+ verified B2B contact profiles | 400M companies, 607M contacts |
| Emails | Real-time verified | 48M total (~8% of contacts) |
| Entry price | $99 / 250 credits | ~$460 / 1,000 Dutch records |
| Reviews | G2: 4.9/5 (394 reviews) | Kiyoh: 9.2/10 (85 reviews) |
| Verification | 8-step at download | Registry-sourced |
| Best for | Outbound sales | Compliance / registry data |
| API | Coming soon | Yes (REST, scroll-based export) |
BookYourData's $0.25-$0.40 per contact kills your outbound ROI at scale. CompanyData.com only has 48M emails across 607M contacts - that's 92% of records with no reachable address. Prospeo delivers 98% email accuracy from 143M+ verified emails at ~$0.01 each, refreshed every 7 days.
Stop overpaying for emails that bounce or don't exist.
Data Quality and Coverage
CompanyData.com claims 607M contacts overall but only 48M email addresses - meaning about 92% of their contacts lack email data. If you're buying a list for cold outbound, that ratio is a dealbreaker.
Their strength is registry sourcing: official trade registers, Companies House, statistical offices, and chambers of commerce. That's gold for KYC/KYB verification. It's not gold for filling an Outreach sequence. They do offer a self-serve list builder called Bold Platform with 100+ filters and role-based lists, including millions of CEO and VP contacts, but the 48M email ceiling means most of those records won't have a reachable address attached.
The numbers also don't quite add up. CompanyData.com's homepage says 400M companies; their Bold Bulk page says ~370M; a Cognism overview pegs it at 303M+. Not a huge deal for compliance use cases, but worth noting if you're evaluating raw coverage claims.
BookYourData takes a different approach entirely. Contacts are verified in real time at download through an 8-step process. Reddit users have documented ~2.3% bounce rates on test batches, which is solid. At scale, though, results vary - one Trustpilot reviewer hit 25-40% bounces on a 15,000-credit purchase before getting replacement credits. We've seen small batches hold up well in our own testing. Large batches deserve a test run first.
Pricing Breakdown
BookYourData runs on a pay-as-you-go credit model: $99 for 250 credits ($0.40/contact), dropping to ~$0.25 or less per contact at higher tiers. Credits never expire, and you get 10 free credits to test.
CompanyData.com starts at ~$460 (€425) for 1,000 Dutch B2B addresses, scaling to roughly $1,500-$2,350 for 10,000-20,000 companies. Bold Bulk starts at around $10,800 for 1M+ records.
Here's the thing: if your average deal size is under $5K, neither tool's pricing makes sense for high-volume outbound. You need cost-per-verified-email under $0.05 to make the math work, and BookYourData's $0.25-$0.40 range eats your margin fast.
A Reddit user broke down their BookYourData ROI: $99 for 250 contacts, 6 bounces (2.4%), 14 positive replies, 5 meetings, and 1 customer paying $249/mo. That's a 2.5x return in month one - but it only works because the ACV justified the per-contact cost. For teams running high-volume sequences at lower ACVs, the economics fall apart quickly.
Reviews and Reputation
BookYourData carries a 4.9/5 on G2 from 394 reviews, with Ease of Use at 9.9 and Quality of Support at 9.8. The most common negative tags on G2: "Expensive" and "Filtering difficulty." The audience skews small business (52%) and mid-market (37%). Trustpilot reviewers repeatedly call out a rep named Mark for fast credit replacements, which says something about their support culture even if the data occasionally misses.
CompanyData.com has a 9.2/10 on Kiyoh (85 reviews), a Dutch review platform with limited international visibility. On Slashdot, they have zero reviews. Their buyer is a compliance team or data engineer, not an SDR browsing G2 - which makes independent validation harder to find. The consensus on r/sales is that most people haven't heard of them, and that tracks with their niche positioning.
Who Should Pick Which
BookYourData fits if you're an SDR, agency, or founder running targeted outbound at moderate volume - hundreds to low thousands of contacts per month - and you want pay-as-you-go without annual contracts. The verified emails and direct dials work well for specific role targeting. If you're building a broader outbound stack, start with the SDR essentials and layer in data sources based on volume and ACV.
CompanyData.com fits if you're building KYC/KYB verification workflows, buying registry-sourced records in bulk for data infrastructure or AI training, or you care about company firmographics more than individual contact info. For teams that need official government-sourced company records across 200 countries, it's one of the few options that pulls directly from trade registers. If you're comparing vendors in this category, see our roundup of B2B company data providers.
Skip both if your primary job is finding verified emails that land in inboxes at scale with maximum deliverability. For that workflow, Prospeo's combination of 98% email accuracy, a 7-day data refresh cycle, and ~$0.01/email pricing covers far more reachable contacts than CompanyData.com's 48M - and at a fraction of BookYourData's per-contact cost. If deliverability is the bottleneck, use an email deliverability guide to fix the root cause before scaling volume. You can also benchmark your list health against typical email bounce rate ranges.
A free tier of 75 emails/month lets you validate before spending a dollar.
If your outbound math only works at $0.40/contact when ACV is $5K+, you need a different data source. Prospeo gives you 75 free verified emails per month - no credit card, no contracts - with the same 98% accuracy that helped Snyk's 50 AEs generate 200+ opportunities per month.
Validate the data before you spend a dollar.
FAQ
Is BoldData the same as CompanyData.com?
Yes. BoldData rebranded as CompanyData.com in 2025. Same company, same team, same database. All existing API endpoints and data products carried over under the new name.
Which is better for outbound email campaigns?
BookYourData wins for outbound. CompanyData.com carries only 48M emails across 607M contacts - about 8% coverage. It's built for compliance and analytics, not cold email sequences.