MailerCheck vs Proofy: Data Enrichment Tool Comparison
Compare MailerCheck and Proofy side by side. See pricing, features, and integrations to choose the right data enrichment tool for your needs.
Compare MailerCheck and Proofy side by side. See pricing, features, and integrations to choose the right data enrichment tool for your needs.
Reviewed and updated September 4, 2026
MailerCheck vs Proofy: Data Enrichment Tool Comparison
MailerCheck and Proofy 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, MailerCheck lists email list verification and email insights, while Proofy lists bulk email verification and single verification in real time. 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 Proofy at $5/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
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.
Proofy is Proofy is an email verification service for bulk list cleaning and real-time single verification through an API, with SMTP, syntax, domain, disposable and accept-all detection. Credits are sold pay-as-you-go or by subscription, never expire, and unknown results are not charged.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Free credits
Trial pack
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
Proofy Pricing (as of September 2026)
| Plan | Price | Emails |
|---|---|---|
| Trial pack | Usage-based | 5,000 verifier checks |
| Pay-As-You-Go 1,000 | Usage-based | 1,000 credits |
| Pay-As-You-Go volume | Usage-based | - |
| Monthly subscription | Contact Sales | - |
Source: Proofy Pricing
Pricing Analysis
MailerCheck is more affordable at the entry level ($0/mo vs $5/mo). For teams with tight budgets or those just getting started with B2B lead data and contact enrichment, this price difference matters.
Proofy offers 4 pricing tiers compared to MailerCheck's 2, giving you more granularity as you scale.
MailerCheck includes a free tier, letting you test the platform before committing financially.
Features Breakdown
- Email list verification
- Email Insights
- Inbox Placement
- Real-time API verification
- Usage report
- Single address verification
- and 2 more listed below
- Bulk email verification
- Single verification in real time
- Email verifier API
- Duplicate email remover
- ISP detection
- Disposable and temporary detection
- and 4 more listed below
MailerCheck Key Features
- Email list verification
- Email Insights
- Inbox Placement
- Real-time API verification
- Usage report
- Single address verification
- Credits and autopay
- Statuses
Proofy Key Features
- Bulk email verification
- Single verification in real time
- Email verifier API
- Duplicate email remover
- ISP detection
- Disposable and temporary detection
- Accept-all detection
- Syntax validation
- SMTP verification
- Mailbox full detection
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 MailerCheck
- Email list verification
- Email Insights
- Inbox Placement
- Real-time API verification
- Usage report
- Single address verification
- Credits and autopay
- Statuses
Listed only by Proofy
- Bulk email verification
- Single verification in real time
- Email verifier API
- Duplicate email remover
- ISP detection
- Disposable and temporary detection
- Accept-all detection
- Syntax validation
- SMTP verification
- Mailbox full detection
Integration Ecosystem
MailerCheck Integrations
MailerCheck connects with: MailerLite, Mailchimp, ActiveCampaign, GetResponse, ConvertKit, Zapier, Make.
Proofy Integrations
Proofy connects with: .
Integrations listed only by MailerCheck: MailerLite, Mailchimp, ActiveCampaign, GetResponse, ConvertKit, Zapier, Make.
Use Case Recommendations
Best Fit for MailerCheck
- Budget-conscious teams looking for an affordable data enrichment tool
- Organizations with complex tech stacks needing broad integration support (7 integrations)
- Teams that want to start free and scale up as needs grow
Best Fit for Proofy
- Budget-conscious teams looking for an affordable data enrichment tool
- Teams that need a wide feature set (10 capabilities listed)
- Enterprise buyers who prefer custom pricing and dedicated support
Feature Comparison Summary
| Feature | MailerCheck | Proofy |
|---|---|---|
| Starting Price | Free | Usage-based |
| Top Tier Price | Usage-based | Contact Sales |
| Total Features Listed | 8 | 10 |
| Integrations | 7 | 0 |
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
MailerCheck and Proofy both serve the B2B lead data and contact enrichment market. MailerCheck offers a more accessible entry point, while Proofy starts at $5/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 MailerCheck and Proofy 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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