Apollo.io vs MillionVerifier: Data Enrichment Tool Comparison

Apollo.io vs MillionVerifier: Data Enrichment Tool Comparison

If you are comparing B2B lead data and contact enrichment tools, Apollo.io and MillionVerifier will likely both appear on your radar. They share some surface-level similarities, but the details reveal important differences in pricing, capability, and target audience.

The Quick Answer

By each vendor's own wording, Apollo.io lists 210m+ contacts database and 30m+ companies, 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

Apollo.io is All-in-one sales intelligence platform with 210M+ contacts, AI-powered campaigns, and built-in email sequencing.

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

Apollo.io Pricing (as of September 2026)

Source: Apollo.io Pricing

MillionVerifier Pricing (as of September 2026)

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.

Apollo.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

Apollo.io lists

• 210M+ contacts database
• 30M+ companies
• AI-powered multichannel campaigns
• Email deliverability guardrails
• Anonymous visitor identification
• Real-time form enrichment
• and 4 more listed below

MillionVerifier lists

• Email Checker (single)
• Email List Verification (CSV)
• Bulk Verifier
• Email Verifier API
• ESP integrations import
• Risky email refund
• and 2 more listed below

Apollo.io Key Features

• 210M+ contacts database
• 30M+ companies
• AI-powered multichannel campaigns
• Email deliverability guardrails
• Anonymous visitor identification
• Real-time form enrichment
• Contact and company enrichment
• Advanced filtering
• CRM data cleansing
• Pipeline boards

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 Apollo.io

• 210M+ contacts database
• 30M+ companies
• AI-powered multichannel campaigns
• Email deliverability guardrails
• Anonymous visitor identification
• Real-time form enrichment
• Contact and company enrichment
• Advanced filtering
• CRM data cleansing
• Pipeline boards

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

Apollo.io Integrations

Apollo.io connects with: Salesforce, HubSpot, Outreach, SalesLoft, Marketo, SendGrid, LinkedIn.

MillionVerifier Integrations

MillionVerifier connects with: Mailchimp, Hubspot, Zoho CRM, Getresponse, AWeber, MailerLite, Drip, Campaign Monitor, Mailgun, Mailjet.

Shared Integrations

Both tools integrate with: HubSpot.

Integrations listed only by Apollo.io: Salesforce, Outreach, SalesLoft, Marketo, SendGrid, LinkedIn.

Integrations listed only by MillionVerifier: Mailchimp, Zoho CRM, Getresponse, AWeber, MailerLite, Drip, Campaign Monitor, Mailgun, Mailjet.

Use Case Recommendations

Best Fit for Apollo.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

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

Getting Started Checklist

1. Define your B2B lead data and contact enrichment requirements and monthly budget
2. Estimate your expected data credits or contact lookups to find the right tier
3. List the integrations your team currently relies on
4. Sign up for free trials or demos of both platforms
5. Run a small test with each tool before making a commitment
6. Evaluate the onboarding experience and support quality

Final Thoughts

Apollo.io and MillionVerifier both serve the B2B lead data and contact enrichment market. Apollo.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 Apollo.io and MillionVerifier for current information.