Adapt.io vs Voila Norbert: Which Email Finder Actually Delivers?
You need 5,000 contacts for a new outbound campaign. Do you start with a filterable database, or a name-to-email finder that only charges when it finds something? That's the core tension between Adapt.io and Voila Norbert - they look similar on paper, but they're different product categories solving different problems.
Here's the thing: neither one is great at the part that matters most.
30-Second Verdict
- Adapt.io wins if you need a searchable B2B database with 150M+ contacts and advanced filters for list building at scale.
- Voila Norbert wins if you already have names and companies and just need emails at low volume with faster time-to-value.
- Skip both if email accuracy is your top priority. Both tools show concerning accuracy gaps in independent benchmarks.
Feature-by-Feature Overview
| Adapt.io | Voila Norbert | |
|---|---|---|
| G2 Rating | 4.6/5 (2,789 reviews) | 4.6/5 (91 reviews) |
| Database Size | 150M+ contacts | Not disclosed |
| Starting Price | $49/mo | $49/mo |
| Time to ROI (G2) | 16 months | 5 months |
| Time to Implement | ~4 months | ~1 month |
| Best For | Filtered list building | Name-to-email lookups |
The G2 ratings are identical, but Adapt has 30x the review volume. That's a meaningful trust signal - 91 reviews can swing on a handful of opinions. And that 16-month ROI figure for Adapt? Brutal. If your team takes over a year to see payback on a prospecting tool, something is structurally wrong with how the product delivers value.
Pricing Compared
| Plan | Adapt.io | Voila Norbert |
|---|---|---|
| Entry | $49/mo (500 Email Credits) | $49/mo (1,000 leads) |
| Mid | $99/mo (1,000 Email Credits) | $99/mo (5,000 leads) |
| High | Custom (contact sales) | $249/mo (15,000 leads) |
| Top | Custom (contact sales) | $499/mo (50,000 leads) |
Let's do the math. Adapt's Starter plan only covers 500 credits - you need the $99 Basic plan to hit 1,000. Norbert's Valet plan covers 1,000 leads for $49, but add verification (~$3 for 1,000 emails at $0.003 each) and enrichment (~$40 for 1,000 at $0.04 each) and you're at roughly $92 all-in.
Norbert also offers 50 free credits when you create an account and a sequences add-on ($19-99/user/month) that's easy to miss.
Adapt gating its higher tiers behind "contact sales" is frustrating. If you need API access, job change alerts, or advanced reporting, you're negotiating blind. Both tools charge roughly the same at low volume - the difference is Adapt gives you a searchable database while Norbert only charges when it actually finds an email.
Feature Comparison
| Feature | Adapt.io | Voila Norbert | Winner |
|---|---|---|---|
| Contact Database | ✅ (150M+) | ❌ (finder-first) | Adapt |
| Chrome Extension | ✅ | ✅ | Tie |
| Bulk Search | ✅ | ✅ | Tie |
| Email Verification | ✅ | ✅ (PAYG add-on) | Adapt (included) |
| API Access | Custom plan only | ✅ (included with prospecting tiers) | Norbert |
| Sequences/Outreach | ❌ | ✅ (paid add-on) | Norbert |
| CRM Integrations | Salesforce, HubSpot, Zoho | Salesforce, HubSpot, Pipedrive, Mailshake, Drip, Close | Norbert (breadth) |
| Intent Data | ❌ | ❌ | Neither |
Neither tool offers intent data or publishes a data refresh frequency. Those are significant gaps against modern platforms that refresh weekly and layer in buyer signals.

Neither Adapt.io nor Voila Norbert offers intent data or publishes a refresh cycle. Prospeo refreshes all 300M+ profiles every 7 days, layers in buyer intent across 15,000 topics, and gives you 30+ filters - so your lists are accurate before you ever hit send.
Stop building campaigns on stale data that bounces.
Accuracy and Data Quality
This is where both tools fall short - and it's the section we spent the most time digging into.
Voila Norbert claims "up to 98%" deliverability on their API page. Independent benchmarks disagree. A Tomba benchmark from February 2026 tested 5,000 searches across nine tools and found Norbert delivered 36.0% valid emails. A benchmark on r/coldemail testing 2,500 contacts put Norbert at 29.9% valid. That's a canyon between vendor claim and real-world performance.
Adapt doesn't publish accuracy benchmarks at all. Across nearly 2,800 G2 reviews, incorrect emails are a recurring complaint.
We've tested dozens of email finders over the years, and the pattern is always the same: you export a list, send a sequence, and the bounce rate is high enough to put your domain reputation at risk. The r/coldemail benchmark reinforced this - low valid-email rates for Norbert were positioned as a dealbreaker, especially when reaching harder-to-crack domains.

What Users Actually Say
Adapt.io gets consistent praise for its Chrome extension and filtering workflows. The flip side: credit limits are the #1 complaint across nearly 2,800 reviews, and that 16-month ROI figure from G2 suggests most teams struggle to extract value quickly enough. Several reviewers mention the learning curve is steeper than expected for what should be a straightforward prospecting tool.
Voila Norbert earns goodwill with its pay-only-for-found-emails model and responsive support team. One G2 reviewer called it a "reliable go-to" for finding emails (January 2026). But the cons are real: missing contacts and email issues show up as recurring themes, the UI needs improvement, and it struggles with large corporate domains where you'd expect the most value.
Look - if your average deal size sits below five figures, neither of these tools justifies the accuracy risk. A 30% valid rate means you're burning 70% of your credits on garbage data. At that point, you're paying for the illusion of prospecting.
The Verdict
Pick Adapt.io if you need a filterable contact database for building targeted lists from scratch and you're patient enough to weather a long ramp-up period.
Pick Voila Norbert if you already have names and domains and need emails at low volume, especially targeting SMBs. It struggles with large corporate domains, so don't expect it to crack enterprise accounts.
Pick neither if email accuracy and data freshness are non-negotiable. Both tools show real accuracy problems in independent testing, and neither publishes how often their data refreshes.
A Better Third Option
The cost difference is stark: roughly $0.01 per lead versus $0.09-$0.10 with either competitor. Teams switching from tools like these report bounce rates dropping from 35%+ to under 4%, with pipeline increases of 140-180%. GreyScout, for example, doubled their sales team and saw pipeline jump 140% after making the switch.
Free tier: 75 verified emails per month, no credit card, no contract.

Independent benchmarks put Norbert at 30-36% valid emails. Adapt users flag bad data across thousands of reviews. Prospeo's 5-step verification delivers 98% email accuracy at $0.01 per lead - 90% cheaper than either tool with bounce rates under 4%.
75 free verified emails. See the accuracy difference yourself.
FAQ
Is Adapt.io or Voila Norbert more accurate?
Neither excels at accuracy. Norbert claims 98% but independent benchmarks show 29.9%-36.0% valid emails. Adapt users consistently flag incorrect emails across nearly 2,800 G2 reviews. Prospeo's 98% verified accuracy holds up because it uses proprietary 5-step verification with catch-all handling and spam-trap removal.
Which is cheaper for 1,000 leads per month?
Norbert runs ~$92 all-in when you add finder, verification, and enrichment. Adapt requires the $99 Basic plan. At low volume, Norbert edges out slightly. Prospeo costs roughly $10 for the same 1,000 leads - about 90% less than either option.
Do Adapt.io and Voila Norbert offer intent data?
No. Neither tool provides buyer intent signals. For teams that need intent-based prospecting, you'll want a platform that tracks topics natively alongside contact data - Prospeo tracks 15,000 Bombora topics, for instance.