Clay vs MailerCheck: Data Enrichment Tool Comparison
Compare Clay and MailerCheck side by side. See pricing, features, and integrations to choose the right data enrichment tool for your needs.
Compare Clay and MailerCheck side by side. See pricing, features, and integrations to choose the right data enrichment tool for your needs.
Reviewed and updated September 2, 2026
Clay vs MailerCheck: Data Enrichment Tool Comparison
Clay and MailerCheck compete head-to-head in the B2B lead data and contact enrichment space. This guide compares their pricing tiers, feature sets, and integration ecosystems to help you make a confident decision.
The Quick Answer
By each vendor's own wording, Clay lists 150+ data provider integrations and ai-powered enrichment (claygent), while MailerCheck lists email list verification and email insights. A capability both offer can appear under different names, so read both feature lists below.
MailerCheck offers a lower entry point at $0/mo compared to Clay at $185/mo.
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
Clay is Data enrichment and workflow automation platform with 150+ integrations and AI-powered enrichment (Claygent).
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
Launch
Free credits
Clay Pricing (as of September 2026)
| Plan | Price | Contacts |
|---|---|---|
| Launch | $185/mo | From 15,000 actions/month |
| Growth | $495/mo | From 40,000 actions/month |
| Enterprise | Contact Sales | Custom |
Source: Clay 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 $185/mo). Teams watching their budget will appreciate the savings, especially when starting out.
Clay offers 3 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
- 150+ data provider integrations
- AI-powered enrichment (Claygent)
- Unlimited users on all plans
- Credit rollover
- Workflow automation
- Data waterfall enrichment
- and 3 more listed below
- Email list verification
- Email Insights
- Inbox Placement
- Real-time API verification
- Usage report
- Single address verification
- and 2 more listed below
Clay Key Features
- 150+ data provider integrations
- AI-powered enrichment (Claygent)
- Unlimited users on all plans
- Credit rollover
- Workflow automation
- Data waterfall enrichment
- Custom API key support
- HTTP API integration
- Webhooks
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 Clay
- 150+ data provider integrations
- AI-powered enrichment (Claygent)
- Unlimited users on all plans
- Credit rollover
- Workflow automation
- Data waterfall enrichment
- Custom API key support
- HTTP API integration
- Webhooks
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
Clay Integrations
Clay connects with: Salesforce, HubSpot, Pipedrive, Close, Apollo.io, Clearbit, ZoomInfo, Lemlist, Instantly, Smartlead, OpenAI, Google Sheets, Airtable, Notion.
MailerCheck Integrations
MailerCheck connects with: MailerLite, Mailchimp, ActiveCampaign, GetResponse, ConvertKit, Zapier, Make.
Integrations listed only by Clay: Salesforce, HubSpot, Pipedrive, Close, Apollo.io, Clearbit, ZoomInfo, Lemlist, Instantly, Smartlead, OpenAI, Google Sheets, Airtable, Notion.
Integrations listed only by MailerCheck: MailerLite, Mailchimp, ActiveCampaign, GetResponse, ConvertKit, Zapier, Make.
Use Case Recommendations
Best Fit for Clay
- Mid-market to enterprise teams with established B2B lead data and contact enrichment budgets
- Teams that need a wide feature set (9 capabilities listed)
- Organizations with complex tech stacks needing broad integration support (14 integrations)
- Enterprise buyers who prefer custom pricing and dedicated support
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 | Clay | MailerCheck |
|---|---|---|
| Starting Price | $185/mo | Free |
| Top Tier Price | Contact Sales | Usage-based |
| Total Features Listed | 9 | 8 |
| Integrations | 14 | 7 |
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
Clay and MailerCheck both serve the B2B lead data and contact enrichment market. MailerCheck offers a more accessible entry point, while Clay starts at $185/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 Clay and MailerCheck for current information.
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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