Closely vs MillionVerifier: Sales Engagement Platform vs Data Enrichment Tool Comparison
Compare Closely (sales engagement platform) and MillionVerifier (data enrichment tool) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Closely is a sales engagement platform for multichannel LinkedIn and email outreach, priced from $49 per month, while MillionVerifier is a data enrichment tool for verifying and cleaning email lists, with a free tier and usage based pay as you go pricing. Teams doing outreach need Closely, teams cleaning contact data need MillionVerifier, and many use both.
Key takeaways
- Closely's Starter plan costs $49 per month for 1 LinkedIn account and unlimited email accounts.
- MillionVerifier offers a free account with 100 free credits, plus a usage based pay as you go plan covering 50,000 emails.
- Closely has 4 pricing tiers (Starter, Growth, Essential, Custom) compared to MillionVerifier's 2 tiers.
- Closely integrates with Salesforce, Pipedrive, HubSpot, GoHighLevel, Gmail, Microsoft Outlook, SMTP, and Webhooks, while MillionVerifier integrates with Mailchimp, HubSpot, Zoho CRM, Getresponse, AWeber, MailerLite, Drip, Campaign Monitor, Mailgun, and Mailjet.
- HubSpot is the only integration shared by both Closely and MillionVerifier.
Reviewed and updated September 5, 2026
Closely vs MillionVerifier: Sales Engagement Platform vs Data Enrichment Tool Comparison
Closely is a sales engagement platform; MillionVerifier is a data enrichment tool. Whether you need one, the other, or both depends on which part of the workflow you are buying for: multi-channel sales outreach and engagement tracking on one side, B2B lead data and contact enrichment on the other. This guide lays out what each vendor publishes.
The Quick Answer
Closely is a sales engagement platform for multi-channel sales outreach and engagement tracking; MillionVerifier is a data enrichment tool for B2B lead data and contact enrichment. By each vendor's own wording, Closely lists multichannel campaigns across linkedin and email and conditional sequence builder, and MillionVerifier lists email checker (single) and email list verification (csv).
MillionVerifier offers a lower entry point at $0/mo compared to Closely at $49/mo.
If your priority is coordinating outreach across email, phone, and social channels, Closely is the one built for it; for finding accurate contact data for target accounts, that is MillionVerifier. Many teams run one of each.
Understanding the Core Difference
Closely is Outbound platform that runs automated campaigns across LinkedIn and email from a shared sender, with a conditional sequence builder, unified inbox, contact enrichment and AI personalization agents.
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
Starter
Free account
Closely Pricing (as of September 2026)
| Plan | Price | Contacts |
|---|---|---|
| Starter | $49/mo | 1 LinkedIn account, unlimited email accounts |
| Growth | $127/mo | 3 LinkedIn accounts, unlimited email accounts, 3,000 bonus credits/mo |
| Essential | $205/mo | 5 LinkedIn accounts, unlimited email accounts, 5,000 bonus credits/mo |
| Custom | Contact Sales | Unlimited seats, custom LinkedIn accounts and credits |
Source: Closely 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
MillionVerifier offers the lower entry point ($0/mo vs $49/mo). Teams watching their budget will appreciate the savings, especially when starting out.
Closely offers 4 pricing tiers compared to MillionVerifier's 2, giving you more granularity as you scale.
MillionVerifier includes a free tier, which is helpful for evaluating the platform without upfront cost.
Features Breakdown
- Multichannel campaigns across LinkedIn and email
- Conditional sequence builder
- Smart Inbox unifying LinkedIn and email replies
- LinkedIn account warmup
- Dedicated residential IP for each LinkedIn account
- OAuth Gmail and Outlook connection plus custom SMTP
- 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
Closely Key Features
- Multichannel campaigns across LinkedIn and email
- Conditional sequence builder
- Smart Inbox unifying LinkedIn and email replies
- LinkedIn account warmup
- Dedicated residential IP for each LinkedIn account
- OAuth Gmail and Outlook connection plus custom SMTP
- Email finder with a multi-step fallback process
- Phone number finder
- AI lead scoring and personalization agents
- Export from Sales Navigator, LinkedIn posts and events
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 Closely
- Multichannel campaigns across LinkedIn and email
- Conditional sequence builder
- Smart Inbox unifying LinkedIn and email replies
- LinkedIn account warmup
- Dedicated residential IP for each LinkedIn account
- OAuth Gmail and Outlook connection plus custom SMTP
- Email finder with a multi-step fallback process
- Phone number finder
- AI lead scoring and personalization agents
- Export from Sales Navigator, LinkedIn posts and events
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
Closely Integrations
Closely connects with: Salesforce, Pipedrive, HubSpot, GoHighLevel, Gmail, Microsoft Outlook, SMTP, Webhooks.
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 Closely: Salesforce, Pipedrive, GoHighLevel, Gmail, Microsoft Outlook, SMTP, Webhooks.
Integrations listed only by MillionVerifier: Mailchimp, Zoho CRM, Getresponse, AWeber, MailerLite, Drip, Campaign Monitor, Mailgun, Mailjet.
Use Case Recommendations
Best Fit for Closely
- Budget-conscious teams looking for an affordable sales engagement platform
- Teams that need a wide feature set (10 capabilities listed)
- 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 | Closely | MillionVerifier |
|---|---|---|
| Starting Price | $49/mo | Free |
| Top Tier Price | Contact Sales | Usage-based |
| Total Features Listed | 10 | 8 |
| Integrations | 8 | 10 |
Getting Started Checklist
- Define your multi-channel sales outreach and engagement tracking and B2B lead data and contact enrichment requirements and monthly budget
- Estimate your expected sequences and engagement actions and 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
Closely serves the multi-channel sales outreach and engagement tracking side of an outbound stack and MillionVerifier the B2B lead data and contact enrichment side. MillionVerifier offers a more accessible entry point, while Closely starts at $49/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 Closely and MillionVerifier for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between Closely and MillionVerifier?
- Closely is a sales engagement platform built for multichannel outreach across LinkedIn and email with a conditional sequence builder and unified inbox, while MillionVerifier is a data enrichment tool focused on verifying and cleaning email lists through single checks, bulk verification, and an API. They solve different parts of the sales workflow.
- Which tool is cheaper to start with, Closely or MillionVerifier?
- MillionVerifier has the lower entry point with a free account offering 100 free credits, compared to Closely's Starter plan at $49 per month. MillionVerifier also offers a usage based pay as you go plan for 50,000 emails, while Closely's higher tiers cost $127 and $205 per month.
- Do Closely and MillionVerifier integrate with the same tools?
- They share only one listed integration, HubSpot. Closely also connects with Salesforce, Pipedrive, GoHighLevel, Gmail, Microsoft Outlook, SMTP, and Webhooks, while MillionVerifier connects with Mailchimp, Zoho CRM, Getresponse, AWeber, MailerLite, Drip, Campaign Monitor, Mailgun, and Mailjet.
- Can I use both Closely and MillionVerifier together?
- Yes, the article notes that many teams run one of each. Closely handles multichannel outreach and engagement tracking, while MillionVerifier handles finding and verifying accurate contact data, so they can complement each other in the same sales workflow.
- Who should choose MillionVerifier over Closely?
- Teams whose priority is finding accurate contact data for target accounts should choose MillionVerifier, since it is built for B2B lead data and contact enrichment with features like email list verification, a bulk verifier, and an email verifier API. Closely is built instead for coordinating outreach across channels.
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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