Close vs MailerCheck: CRM Platform vs Data Enrichment Tool Comparison
Compare Close (CRM platform) and MailerCheck (data enrichment tool) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Close is a CRM platform for customer relationship management and sales pipeline tracking, priced from $19/mo up to $149/mo. MailerCheck is a data enrichment tool for email list verification and deliverability testing, starting free with 10 credits before moving to pay as you go at $0.01 per credit. Many teams use both tools together for different parts of the workflow.
Key takeaways
- Close's entry plan, Solo, costs $19/mo and is limited to 10,000 leads, while MailerCheck's entry tier is free and includes 10 credits for email list verification only.
- Close offers four pricing tiers, Solo, Essentials, Growth, and Scale, topping out at $149/mo, compared to MailerCheck's two pricing options.
- MailerCheck's pay as you go plan starts at 1,000 credits for $0.01 per credit, where one credit equals one email verification.
- Close lists integrations with Zapier, Slack, Gmail, Microsoft Outlook, Zoom, HubSpot, Segment, and Calendly, eight in total.
- MailerCheck lists integrations with MailerLite, Mailchimp, ActiveCampaign, GetResponse, ConvertKit, Zapier, and Make, and Zapier is the only integration shared between the two tools.
Reviewed and updated September 4, 2026
Close vs MailerCheck: CRM Platform vs Data Enrichment Tool Comparison
Sales teams building an outbound stack often weigh Close, a CRM platform for customer relationship management and sales pipeline tracking, against MailerCheck, a data enrichment tool for B2B lead data and contact enrichment. They cover different parts of the workflow, so this comparison covers what each one does, what each one costs, and where they overlap.
The Quick Answer
Close is a CRM platform for customer relationship management and sales pipeline tracking; MailerCheck is a data enrichment tool for B2B lead data and contact enrichment. By each vendor's own wording, Close lists built-in calling with power dialer and native sms messaging, and MailerCheck lists email list verification and email insights.
MailerCheck offers a lower entry point at $0/mo compared to Close at $19/mo.
If your priority is organizing contacts, tracking deals, and forecasting revenue, Close is the one built for it; for finding accurate contact data for target accounts, that is MailerCheck. Many teams run one of each.
Understanding the Core Difference
Close is A CRM built specifically for inside sales teams, with built-in calling, SMS, and email functionality. Close focuses on reducing manual data entry and increasing sales velocity with features like Power Dialer, predictive dialing, and workflow automation.
MailerCheck is Email list verification and deliverability testing tool that validates single addresses, bulk lists or new signups through an API, and tests email content and inbox placement before a send.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Solo
Free credits
Close Pricing (as of September 2026)
| Plan | Price | Contacts |
|---|---|---|
| Solo | $19/mo | Limited to 10k leads |
| Essentials | $49/mo | - |
| Growth | $109/mo | - |
| Scale | $149/mo | - |
Source: Close Pricing
MailerCheck Pricing (as of September 2026)
| Plan | Price | Emails |
|---|---|---|
| Free credits | Free | 10 free credits on a new account, for Email List Verification only |
| Pay as you go | Usage-based | 1,000 credits at the entry step, at $0.01 per credit; 1 credit = 1 email verification |
Source: MailerCheck Pricing
Pricing Analysis
MailerCheck offers the lower entry point ($0/mo vs $19/mo). Teams watching their budget will appreciate the savings, especially when starting out.
Close offers 4 pricing tiers compared to MailerCheck's 2, giving you more granularity as you scale.
MailerCheck includes a free tier, which is helpful for evaluating the platform without upfront cost.
Features Breakdown
- Built-in calling with Power Dialer
- Native SMS messaging
- Email sequences and templates
- Automated workflows
- Predictive dialing
- AI Email Assistant
- and 2 more listed below
- Email list verification
- Email Insights
- Inbox Placement
- Real-time API verification
- Usage report
- Single address verification
- and 2 more listed below
Close Key Features
- Built-in calling with Power Dialer
- Native SMS messaging
- Email sequences and templates
- Automated workflows
- Predictive dialing
- AI Email Assistant
- Pipeline and activity reporting
- Role-based access and permissions
MailerCheck Key Features
- Email list verification
- Email Insights
- Inbox Placement
- Real-time API verification
- Usage report
- Single address verification
- Credits and autopay
- Statuses
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 Close
- Built-in calling with Power Dialer
- Native SMS messaging
- Email sequences and templates
- Automated workflows
- Predictive dialing
- AI Email Assistant
- Pipeline and activity reporting
- Role-based access and permissions
Listed only by MailerCheck
- Email list verification
- Email Insights
- Inbox Placement
- Real-time API verification
- Usage report
- Single address verification
- Credits and autopay
- Statuses
Integration Ecosystem
Close Integrations
Close connects with: Zapier, Slack, Gmail, Microsoft Outlook, Zoom, HubSpot, Segment, Calendly.
MailerCheck Integrations
MailerCheck connects with: MailerLite, Mailchimp, ActiveCampaign, GetResponse, ConvertKit, Zapier, Make.
Shared Integrations
Both tools integrate with: Zapier.
Integrations listed only by Close: Slack, Gmail, Microsoft Outlook, Zoom, HubSpot, Segment, Calendly.
Integrations listed only by MailerCheck: MailerLite, Mailchimp, ActiveCampaign, GetResponse, ConvertKit, Make.
Use Case Recommendations
Best Fit for Close
- Budget-conscious teams looking for an affordable CRM platform
- Organizations with complex tech stacks needing broad integration support (8 integrations)
- Sales teams tracking deals from first touch to close
- Managers who need pipeline visibility and forecasting
Best Fit for MailerCheck
- Budget-conscious teams looking for an affordable data enrichment tool
- Teams that want to start free and scale up as needs grow
- Revenue operations teams building targeted prospect lists
- Marketing teams enriching CRM data for segmentation
Feature Comparison Summary
| Feature | Close | MailerCheck |
|---|---|---|
| Starting Price | $19/mo | Free |
| Top Tier Price | $149/mo | Usage-based |
| Total Features Listed | 8 | 8 |
| Integrations | 8 | 7 |
| Founded | 2013 | N/A |
Getting Started Checklist
- Define your customer relationship management and sales pipeline tracking and B2B lead data and contact enrichment requirements and monthly budget
- Estimate your expected contacts and deals 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
Close serves the customer relationship management and sales pipeline tracking side of an outbound stack and MailerCheck the B2B lead data and contact enrichment side. MailerCheck offers a more accessible entry point, while Close starts at $19/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 Close and MailerCheck for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between Close and MailerCheck?
- Close is a CRM platform built for inside sales teams to manage customer relationships and track sales pipelines, with built-in calling, SMS, and workflow automation. MailerCheck is an email list verification and deliverability testing tool that validates single addresses or bulk lists and tests inbox placement before a send. They cover different parts of an outbound workflow.
- How much does Close cost?
- Close starts at $19/mo for the Solo plan, which is limited to 10,000 leads. Additional tiers include Essentials at $49/mo, Growth at $109/mo, and Scale at $149/mo, giving four pricing levels as teams scale up their usage.
- How much does MailerCheck cost?
- MailerCheck offers a free tier with 10 free credits for new accounts, usable only for Email List Verification. Beyond that, it moves to a pay as you go model starting at 1,000 credits for $0.01 per credit, where one credit verifies one email.
- Can Close and MailerCheck be used together?
- Yes, the article notes that many teams run one of each since Close handles pipeline organization and forecasting while MailerCheck handles finding accurate contact data. Both tools also integrate with Zapier, which can help connect the two workflows.
- What integrations does each tool support?
- Close connects with Zapier, Slack, Gmail, Microsoft Outlook, Zoom, HubSpot, Segment, and Calendly, eight integrations in total. MailerCheck connects with MailerLite, Mailchimp, ActiveCampaign, GetResponse, ConvertKit, Zapier, and Make. Zapier is the only integration listed by both platforms.
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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