Captain Verify vs Kaspr: They Solve Different Problems - Here's How to Choose
This isn't a real head-to-head comparison. Captain Verify cleans email lists. Kaspr finds new contacts. Comparing them is like comparing a spell-checker to a search engine - they sit at completely different stages of your outbound workflow.
If your last campaign bounced at 8-12%, you need verification. If your phone credits ran out mid-month, you need a different plan or a different tool entirely. For many teams, the right answer is: use a finder, then verify - unless you consolidate into one platform that handles both.
30-Second Verdict
Pick Captain Verify if you've already got a list and your bounce rate is killing your sender reputation. It's a verification tool - cheap, focused, and pay-as-you-go.
Pick Kaspr if you don't have contacts yet and need to pull B2B emails and phone numbers from professional profiles. It's a prospecting tool with a Chrome extension and a database Kaspr markets as 120M+ contacts, with strong European coverage.
What Each Tool Actually Does
Captain Verify is a French email verification service. You upload a CSV of email addresses, it runs them through validation checks, and you get back a clean list sorted by status: valid, invalid, unknown, risky, catch-all, disposable, and more. It also offers HLR lookup for mobile number validation and an API with webhook support for real-time validation in forms and pipelines - useful if you're building signup flows or enrichment automations that need instant feedback. Captain Verify doesn't find contacts. It tells you whether the ones you have are real.
We've learned the hard way that verification tools only earn their keep when you run them before every send, not as a one-time cleanup. If you're treating verification as a quarterly project, you're already behind.
Kaspr is a B2B contact discovery platform. Its Chrome extension lets you pull emails and phone numbers while browsing professional profiles, and its database covers 120M+ contacts with particular strength in European markets. Kaspr cross-references its data against 120 sources, but it isn't a dedicated verifier. Think of it as the tool that fills your pipeline, not the one that scrubs it.
One thing to know upfront: you need at least 20 connections on your Kaspr account before the tool works. It's an anti-spam measure, but it catches some new users off guard.
Feature-by-Feature Breakdown
| Feature | Captain Verify | Kaspr |
|---|---|---|
| Primary function | Email verification | Contact discovery |
| Email verification | ✅ Core product | ❌ Not a verifier |
| Contact discovery | ❌ Not a finder | ✅ Core product |
| Phone numbers | ✅ HLR validation | ✅ Phone credits |
| Chrome extension | ❌ | ✅ |
| API access | ✅ (+ webhook) | ✅ (Business+) |
| Bulk export / workflows | ✅ CSV upload | ✅ Export credits (limits apply) |
| Security & compliance | ✅ France-based servers; ISO 27001 + SOC certified | ✅ CCPA & GDPR aligned |
| Min. requirement | None | 20 connections on account |
| Free tier | 100 credits at signup | 5 phone + 15 B2B email + 5 direct email/mo |
| Best for | Cleaning lists | Finding contacts |
Security certifications support compliance programs, but your lawful basis and outreach practices still matter. Neither tool's checkbox replaces proper legal review.
Kaspr fills your pipeline. Captain Verify cleans it. Prospeo does both - find contacts, then verify in real time at 98% email accuracy with a 7-day refresh.
Consolidate discovery + verification and send with confidence.
Pricing Breakdown
These tools price completely differently, which makes sense given they do completely different things.
Captain Verify: Pay-Per-Use Credits
No seat fees, no monthly minimums beyond what you buy:
| Volume | Price | Per 1,000 |
|---|---|---|
| 1,000 | EUR7 | EUR7.00 |
| 10,000 | EUR60 | EUR6.00 |
| 50,000 | EUR150 | EUR3.00 |
| 100,000 | EUR200 | EUR2.00 |
| 500,000 | EUR500 | EUR1.00 |
| 1,000,000 | EUR650 | EUR0.65 |
Subscriptions save 10%, and annual plans include two months free. Unknowns get recredited, so you aren't paying for inconclusive results - a genuinely fair policy. You also get 100 free credits at signup.
Kaspr: Per-Seat With Credit Allowances
| Plan | Annual | Monthly | Phone/mo | B2B Email/mo | Direct Email/mo |
|---|---|---|---|---|---|
| Free | $0 | $0 | 5 | 15 | 5 |
| Starter | $49/user | $65/user | 100 | Unlimited | 5 |
| Business | $79/user | $99/user | 200 | Unlimited | 200 |
| Enterprise | Custom | Custom | Unlimited | Unlimited | Unlimited |
Here's the thing about Kaspr's pricing: those credit limits hit fast. We've seen Starter credits disappear in week one when reps prospect daily - Business at $79/user/month is the realistic floor for active outbound teams.
If you run a cost-per-lead calculation on Kaspr Business with annual billing, that's 200 phone credits at $79/user/month - roughly $0.40 per phone number before you factor in export limits. Not expensive for verified direct dials, but it adds up across a five-rep team to nearly $400/month just for the seats.
What Users Say
Captain Verify
Rated 4.5/5 on Capterra (19 reviews), 4.3/5 on Trustpilot (50 reviews), and 4.5/5 on G2 (3 reviews).
Users consistently praise the simple interface, detailed verification statuses, competitive pricing, and API availability. The negatives are worth knowing, though. One G2 reviewer reported over 70 minutes to process fewer than 1,000 emails - if you're verifying 50K addresses before a campaign launch, plan ahead. This isn't a tool you run five minutes before hitting send. Trustpilot threads also flag frustration with "unknown" results on addresses users believe are valid, and a few reports mention account-lock friction during onboarding tied to KYC and misuse prevention.
Kaspr
Rated 4.4/5 on G2 (833 reviews).
The Chrome extension workflow and intuitive UI earn the most praise. Contact data is generally accurate, especially for European markets. The loudest complaints on G2 center on credit depletion - Kaspr's free tier gives you 5 phone credits a month, which isn't even a morning's worth of prospecting. Some users also flag occasional outdated contact info, which is the inevitable tradeoff of any database that doesn't refresh weekly.
Which One Do You Need?
Your bounce rate is above 5% - Captain Verify. You've got a data quality problem, not a data quantity problem. (If you want benchmarks and fixes, see email bounce rate.)
You need new contacts to prospect - Kaspr. You don't have a list yet and need to build one. (If you're rebuilding your outbound motion, start with sales prospecting techniques.)
EU compliance is a priority - both are GDPR-aligned, but Captain Verify edges ahead with France-based servers and ISO 27001 + SOC certification.
You need to find contacts AND verify them - keep reading.
Skip the Two-Tool Stack
Running Kaspr for discovery and Captain Verify for cleaning works, but it's two subscriptions, two exports, and a manual deduplication step in between. Conservatively, that's 20-30 minutes of friction per campaign - and that friction compounds across dozens of sends per month.
If you're trying to standardize the workflow, it helps to map it to a clear lead generation workflow so steps don't get skipped.
Let's put real numbers on it. Teams switching from multi-tool stacks to a single find-and-verify platform report bounce rates dropping below 4% and pipeline increases of 140%+. That's the difference between weekly-refreshed data and databases that update every 4-6 weeks.
If phone credits are your bottleneck, switch to data that connects. Prospeo gives you 125M+ verified mobiles with a 30% pickup rate - plus verified emails at ~$0.01 each.
Build lists that answer - without burning seats or exports.
FAQ
Can I use Captain Verify and Kaspr together?
Yes. Use Kaspr to discover contacts, export the list, then run it through Captain Verify to strip invalid addresses before sending. This two-tool workflow is common but adds 20-30 minutes of export and deduplication time per campaign. Prospeo eliminates that step by combining discovery and verification in one platform.
Why do some emails come back as "unknown" in Captain Verify?
"Unknown" means the recipient's mail server refused to confirm whether the address exists - common with catch-all domains and privacy-focused servers. Captain Verify recredits unknowns, so you aren't charged for inconclusive results. Tools with catch-all domain handling and multi-step verification resolve more of these ambiguous cases.
Does Kaspr verify email addresses?
Kaspr cross-references contact data against 120 sources, but it's a prospecting tool, not a dedicated verifier. If deliverability matters - and it should - run Kaspr exports through a verification service before launching campaigns. Expect 5-10% of unverified Kaspr emails to bounce.
Is there a single tool that finds and verifies B2B emails?
Several platforms combine both functions. Prospeo pairs contact discovery across 300M+ profiles with built-in 5-step verification at 98% email accuracy, refreshing all records every 7 days. At roughly $0.01 per email with a free tier of 75 credits, it removes the need to pair a separate finder with a separate verifier.