Adapt.io vs MillionVerifier: Data Enrichment Tool Comparison
Compare Adapt.io and MillionVerifier side by side. See pricing, features, and integrations to choose the right data enrichment tool for your needs.
Adapt.io and MillionVerifier both start free and solve different jobs. Adapt.io is a B2B lead intelligence platform with 250M+ business contacts and enrichment across 50+ attributes, while MillionVerifier is a bulk email verification service that cleans lists, checks single addresses, and verifies via API. Choice depends on whether you need contact data or email list cleaning.
Key takeaways
- Adapt.io lists 250M+ business contacts and 10M+ company profiles, while MillionVerifier lists email checker (single) and email list verification (CSV) as its core capabilities.
- Adapt.io offers 4 pricing tiers, Free, Starter at 49 dollars per month, Basic at 99 dollars per month, and a Custom tier, while MillionVerifier offers 2 tiers, a Free account and Pay as you go.
- Both platforms start at a 0 dollar per month price point, so the decision comes down to feature set and tier structure.
- Adapt.io integrates with 6 platforms including Salesforce, HubSpot, Zoho CRM, Marketo, Outreach, and Zapier, while MillionVerifier integrates with 10 platforms including Mailchimp, HubSpot, and Zoho CRM.
- Adapt.io was founded in 2016, while MillionVerifier's founding year is listed as N/A in the comparison.
Reviewed and updated September 4, 2026
Adapt.io vs MillionVerifier: Data Enrichment Tool Comparison
Sales teams evaluating B2B lead data and contact enrichment tools often narrow their shortlist to Adapt.io and MillionVerifier. Both target the same job, but they cater to different workflows and budgets. This comparison covers pricing, features, and integrations so you can pick the right fit.
The Quick Answer
By each vendor's own wording, Adapt.io lists 250m+ business contacts and 10m+ company profiles, while MillionVerifier lists email checker (single) and email list verification (csv). A capability both offer can appear under different names, so read both feature lists below.
Both start at the same price point ($0/mo), so the decision comes down to features and workflow fit.
If your priority is finding accurate contact data for target accounts, both tools target it. The right choice depends on your budget, team size, and the specific capabilities you need most.
Understanding the Core Difference
Adapt.io is B2B lead intelligence platform with 250M+ contacts, Prospector Chrome extension, and data enrichment with 50+ attributes.
MillionVerifier is Bulk email verification service that cleans uploaded lists, checks single addresses in real time and verifies through an API. Connects to email marketing platforms to import lists and remove bad addresses automatically.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Adapt.io Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Free | Free | 25 Email Credits, 25 Enrichment Credits, 25 Contacts per day | 25 Email Credits |
| Starter | $49/mo | 500 Email Credits, 500 Enrichment Credits, 50 Contacts per day | 500 Email Credits |
| Basic | $99/mo | 1,000 Email Credits, 100 Phone Credits, 1,000 Enrichment Credits | 1,000 Email Credits |
| Custom | Contact Sales | Custom | - |
Source: Adapt.io Pricing
MillionVerifier Pricing (as of September 2026)
| Plan | Price | Emails |
|---|---|---|
| Free account | Free | 100 free credits |
| Pay as you go | Usage-based | 50,000 emails |
Source: MillionVerifier Pricing
Pricing Analysis
Both platforms start at the same $0/mo price point. The decision comes down to which feature set and tier structure works better for your expected usage.
Adapt.io offers 4 pricing tiers compared to MillionVerifier's 2, giving you more granularity as you scale.
Both platforms offer free tiers, so you can test each one before spending anything.
Features Breakdown
- 250M+ business contacts
- 10M+ company profiles
- Prospector Chrome extension
- Data enrichment with 50+ attributes
- Lead builder with advanced filters
- ABM list building
- and 4 more listed below
- Email Checker (single)
- Email List Verification (CSV)
- Bulk Verifier
- Email Verifier API
- ESP integrations import
- Risky email refund
- and 2 more listed below
Adapt.io Key Features
- 250M+ business contacts
- 10M+ company profiles
- Prospector Chrome extension
- Data enrichment with 50+ attributes
- Lead builder with advanced filters
- ABM list building
- 3,000+ tech sector classifications
- Saved searches
- CSV export
- API access
MillionVerifier Key Features
- Email Checker (single)
- Email List Verification (CSV)
- Bulk Verifier
- Email Verifier API
- ESP integrations import
- Risky email refund
- EverClean automatic email verification
- Credits never expire
The two lists below are a diff of each vendor's own feature list by exact wording, so a capability both tools offer can appear on either side under a different name.
Listed only by Adapt.io
- 250M+ business contacts
- 10M+ company profiles
- Prospector Chrome extension
- Data enrichment with 50+ attributes
- Lead builder with advanced filters
- ABM list building
- 3,000+ tech sector classifications
- Saved searches
- CSV export
- API access
Listed only by MillionVerifier
- Email Checker (single)
- Email List Verification (CSV)
- Bulk Verifier
- Email Verifier API
- ESP integrations import
- Risky email refund
- EverClean automatic email verification
- Credits never expire
Integration Ecosystem
Adapt.io Integrations
Adapt.io connects with: Salesforce, HubSpot, Zoho CRM, Marketo, Outreach, Zapier.
MillionVerifier Integrations
MillionVerifier connects with: Mailchimp, Hubspot, Zoho CRM, Getresponse, AWeber, MailerLite, Drip, Campaign Monitor, Mailgun, Mailjet.
Shared Integrations
Both tools integrate with: HubSpot, Zoho CRM.
Integrations listed only by Adapt.io: Salesforce, Marketo, Outreach, Zapier.
Integrations listed only by MillionVerifier: Mailchimp, Getresponse, AWeber, MailerLite, Drip, Campaign Monitor, Mailgun, Mailjet.
Use Case Recommendations
Best Fit for Adapt.io
- Budget-conscious teams looking for an affordable data enrichment tool
- Teams that need a wide feature set (10 capabilities listed)
- Teams that want to start free and scale up as needs grow
- Enterprise buyers who prefer custom pricing and dedicated support
Best Fit for MillionVerifier
- Budget-conscious teams looking for an affordable data enrichment tool
- Organizations with complex tech stacks needing broad integration support (10 integrations)
- Teams that want to start free and scale up as needs grow
Feature Comparison Summary
| Feature | Adapt.io | MillionVerifier |
|---|---|---|
| Starting Price | Free | Free |
| Top Tier Price | Contact Sales | Usage-based |
| Total Features Listed | 10 | 8 |
| Integrations | 6 | 10 |
| Founded | 2016 | N/A |
Getting Started Checklist
- Define your B2B lead data and contact enrichment requirements and monthly budget
- Estimate your expected data credits or contact lookups to find the right tier
- List the integrations your team currently relies on
- Sign up for free trials or demos of both platforms
- Run a small test with each tool before making a commitment
- Evaluate the onboarding experience and support quality
Final Thoughts
Adapt.io and MillionVerifier both serve the B2B lead data and contact enrichment market. Adapt.io offers a more accessible entry point, while MillionVerifier starts at $0/mo. Your decision should weigh pricing against the specific features that matter most for your workflow.
Start with a trial of each to see which platform fits your team's daily process. The best tool is the one your team actually uses consistently.
Pricing and features verified as of September 2026. Visit Adapt.io and MillionVerifier for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between Adapt.io and MillionVerifier?
- Adapt.io is a B2B lead intelligence platform built around 250M+ business contacts, a Prospector Chrome extension, and data enrichment with 50+ attributes. MillionVerifier is a bulk email verification service that cleans uploaded lists, checks single addresses in real time, and verifies through an API, connecting to email marketing platforms to remove bad addresses automatically.
- Which tool is cheaper, Adapt.io or MillionVerifier?
- Both tools start at the same 0 dollar per month price point with a free tier. Adapt.io then moves to a Starter plan at 49 dollars per month and a Basic plan at 99 dollars per month, plus a Custom contact-sales tier, while MillionVerifier uses a usage-based Pay as you go model after its free account.
- Which tool has more integrations?
- MillionVerifier lists 10 integrations, including Mailchimp, HubSpot, Zoho CRM, Getresponse, AWeber, MailerLite, Drip, Campaign Monitor, Mailgun, and Mailjet. Adapt.io lists 6 integrations, including Salesforce, HubSpot, Zoho CRM, Marketo, Outreach, and Zapier. Both tools share HubSpot and Zoho CRM as common integrations.
- Who should choose Adapt.io over MillionVerifier?
- Adapt.io fits budget-conscious teams that want a wide feature set, since it lists 10 capabilities including lead building, ABM list building, and CSV export. It also suits teams that want to start free and scale up, plus enterprise buyers who prefer custom pricing and dedicated support.
- Who should choose MillionVerifier over Adapt.io?
- MillionVerifier fits budget-conscious teams focused on email list cleaning, as well as organizations with complex tech stacks that need broad integration support, since it connects to 10 platforms. It also suits teams that want to start free on its free account tier before scaling to its usage-based pricing.
About the author.
Tim Carden is CMO / CTO at RevenueFlow, which builds and operates outbound revenue engines for B2B companies. Studied at McGill University.
Tim Carden · CMO / CTO
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