CompanyData.com (BoldData) vs Seamless.AI: Which One Do You Actually Need?
Here's the thing: these two tools barely overlap. One is a data infrastructure platform built on government registries. The other is a real-time prospecting tool with a Chrome extension. Comparing them is like comparing a warehouse to a vending machine - both dispense data, but the use case is completely different.
We've used both, and the honest answer is that most sales teams searching for this comparison actually need something neither tool does well. Let's break it down.
30-Second Verdict
- BoldData wins if you need bulk company records, international firmographic coverage, or registry-verified data for enrichment and analytics.
- Seamless.AI wins if you're a US-focused SDR who needs fast contact lookups and can tolerate bounce rates north of 20%.
- Skip both if you need verified emails and direct dials with transparent pricing. Prospeo covers that gap - 98% email accuracy, 125M+ verified mobiles, self-serve from day one.
BoldData at a Glance
BoldData (the company behind CompanyData.com) is a global company data provider, not a prospecting tool. The database covers 400M+ companies across 190+ countries, sourced from official registries, financial filings, and web data. That distinction matters for compliance-sensitive use cases like KYC, market sizing, or CRM enrichment at scale.
The API exposes 303M+ companies and 287M contacts, with 600K+ new records added monthly. Pricing starts at EUR425 for custom lists and pay-per-call from $0.10, with no annual contract required. We've pulled BoldData records for European market sizing projects and found the registry sourcing noticeably cleaner than scraped alternatives - company registration numbers, SIC codes, and financial data all check out against public filings. If you need infrastructure-grade company data globally, it delivers. If you need to find a VP's email in 10 seconds, it's the wrong product entirely.
Seamless.AI at a Glance
Seamless.AI carries a 4.4/5 on G2 from 5,319 reviews, which sounds impressive until you read what those reviews actually say. The platform claims 1.7B+ contacts and 98% accuracy. Users tell a different story: teams report email bounce rates of 20-50% and phone numbers landing around 60% accuracy. Credits burn fast because you pay before seeing whether the data is any good.
Real pricing after a sales call: Pro runs $79/user/month with 1,000 credits. Extra credits cost $49 per 500. Enterprise is $149/user/month with a 5-user minimum - that's $745/month before anyone's topped up. One Reddit user reported burning through the free 50 credits in two days, then spending $177/month after buying extra credit packs on top of the Pro plan. In our testing, the credit burn is real. 1,000 credits disappear in under three weeks of moderate use, and add-ons like intent data and job change alerts push the real cost 40-60% higher than the base license.
Seamless.AI burns credits on bad data. BoldData wasn't built for prospecting. Prospeo gives you 98% email accuracy and 125M+ verified mobiles - refreshed every 7 days, not every 6 weeks.
Stop choosing between infrastructure overkill and bounce rate roulette.
Head-to-Head Feature Comparison
| Dimension | BoldData | Seamless.AI | Edge |
|---|---|---|---|
| Database | 400M+ companies, 287M contacts | Claims 1.7B+ contacts | BoldData (registry-sourced) |
| Global Coverage | 190+ countries | Primarily US-focused | BoldData |
| Data Sources | Official registries, financial filings, web data | AI web crawling + public data + user-submitted data | BoldData |
| Company Data Accuracy | Registry-sourced, verifiable | Mixed accuracy complaints | BoldData |
| Email Deliverability | Not the core use case | 20-50% bounce reported | Neither |
| Phone Data | Pay-per-call from $0.10 | Included in credits; ~60% accurate | BoldData |
| Pricing Model | Pay-per-call / custom lists | Credit-based subscription | Tie (different models) |
| Starting Price | EUR425 (lists) / $0.10 (calls) | Free (50 credits) then $79/mo | Seamless (free tier exists) |
| Compliance | Fully aligned with data protection laws | Not positioned for non-US use | BoldData |
| API Access | Yes (303M+ companies) | Limited | BoldData |
| Bulk Download | Yes | Limited | BoldData |
The fundamental difference isn't features - it's data philosophy. BoldData pulls from official registries and delivers bulk datasets. Seamless crawls the web with AI and lets reps search one contact at a time. For international teams, this isn't even close: BoldData covers 190+ countries while Seamless states its services aren't appropriate for use outside of the US.
If your average deal size is under $15k and you're selling internationally, neither of these tools is the right starting point. You need verified contact data first, company firmographics second.
When to Choose Each Tool
Pick BoldData
You're a data team or RevOps org that needs bulk company records across multiple geographies. CRM enrichment, market analysis, KYC verification - BoldData's registry-sourced approach and pay-per-call pricing handle all of it without locking you into annual commitments. For teams running compliance-heavy workflows in Europe or APAC, the official registry sourcing alone justifies the price.
Pick Seamless.AI
You're a US-only SDR team that prioritizes speed over accuracy. The Chrome extension workflow is genuinely fast for active prospecting - we won't pretend otherwise. Just plan for 20-30% bounces, budget for extra credit packs, and read the contract terms before signing. The consensus on r/sales is that the auto-renewal reputation is earned, so set a calendar reminder before your renewal window closes.
Skip Both
For teams that need accurate contact data without the infrastructure overhead of BoldData or the accuracy headaches of Seamless, there's a middle path. Most outbound teams don't need 400M company records from government registries. They need emails that land and phone numbers that ring.
A Better Fit for Most Teams
Look: most teams weighing BoldData against Seamless.AI actually need something in between. BoldData is data infrastructure - powerful but not built for daily prospecting. Seamless is a prospecting tool with accuracy problems that eat your budget from both ends (credits spent on bad data plus domain reputation damage from bounces).
Prospeo bridges that gap with 300M+ profiles, 98% email accuracy, and data that refreshes every 7 days. Self-serve, no contracts, 75 free verified emails per month. Paid plans run about $0.01 per email - a fraction of what Seamless charges per credit, with dramatically better deliverability. Teams using Prospeo book 26% more meetings than ZoomInfo users and 35% more than Apollo users. When your emails actually land, everything downstream improves.
If you're building a modern outbound motion, start with sales prospecting fundamentals, then pick the right SDR tools for your workflow.
At $0.01 per email, Prospeo costs a fraction of Seamless.AI's credit packs - with dramatically better deliverability. Teams book 35% more meetings than Apollo users because emails actually land.
Skip the sales call. Self-serve signup, no contracts, cancel anytime.
FAQ
Is BoldData the same as CompanyData.com?
Yes. CompanyData.com is BoldData's platform for accessing its datasets and API. Same company, same underlying data infrastructure, different branding. All 400M+ company records and 287M contacts are accessible through either name.
Does Seamless.AI work outside the US?
Seamless states its services aren't appropriate for use outside the US. For international prospecting, BoldData covers 190+ countries with registry-sourced company data, and tools like Prospeo offer 300M+ global profiles with verified emails and mobiles.
What's the cheapest way to get verified B2B emails?
Prospeo's free tier gives you 75 verified emails per month with no credit card required. Paid plans start at roughly $0.01 per email - significantly cheaper than Seamless.AI's credit system, where you're paying for bounced contacts alongside valid ones.