MailerCheck vs Streak: Data Enrichment Tool vs CRM Platform Comparison
Compare MailerCheck (data enrichment tool) and Streak (CRM platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
MailerCheck is a data enrichment tool for B2B lead data and contact enrichment, priced from free with pay as you go credits at $0.01 each. Streak is a Gmail based CRM for pipeline tracking and contact management, starting at $59/mo. Teams often use both together rather than choosing one over the other.
Key takeaways
- MailerCheck offers a free plan with 10 free credits on a new account for Email List Verification only.
- MailerCheck's pay as you go plan starts at 1,000 credits for $0.01 per credit, where 1 credit equals 1 email verification.
- Streak's pricing has three tiers: Pro at $59/mo, Pro+ at $89/mo, and Enterprise at $159/mo.
- MailerCheck integrates with MailerLite, Mailchimp, ActiveCampaign, GetResponse, ConvertKit, Zapier, and Make, while Streak integrates with Google Workspace, Gmail, Slack, LinkedIn, ChatGPT, Claude, and Allo.
- Streak was founded in 2011, while MailerCheck's founding year is not listed.
Reviewed and updated September 5, 2026
MailerCheck vs Streak: Data Enrichment Tool vs CRM Platform Comparison
MailerCheck is a data enrichment tool; Streak is a CRM platform. Whether you need one, the other, or both depends on which part of the workflow you are buying for: B2B lead data and contact enrichment on one side, customer relationship management and sales pipeline tracking on the other. This guide lays out what each vendor publishes.
The Quick Answer
MailerCheck is a data enrichment tool for B2B lead data and contact enrichment; Streak is a CRM platform for customer relationship management and sales pipeline tracking. By each vendor's own wording, MailerCheck lists email list verification and email insights, and Streak lists pipelines to track deals through every stage and shared contact database.
MailerCheck offers a lower entry point at $0/mo compared to Streak at $59/mo.
If your priority is finding accurate contact data for target accounts, MailerCheck is the one built for it; for organizing contacts, tracking deals, and forecasting revenue, that is Streak. Many teams run one of each.
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.
Streak is Streak is a CRM built directly into Gmail, so pipelines, contacts and tasks live in the same inbox the team already works in. It adds email tools such as email tracking, mail merge, snippets and thread splitting on top of Google Workspace.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Free credits
Pro
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
Streak Pricing (as of September 2026)
| Plan | Price |
|---|---|
| Pro | $59/mo |
| Pro+ | $89/mo |
| Enterprise | $159/mo |
Source: Streak Pricing
Pricing Analysis
MailerCheck is more affordable at the entry level ($0/mo vs $59/mo). For teams with tight budgets or those just getting started with B2B lead data and contact enrichment and customer relationship management and sales pipeline tracking, this price difference matters.
Streak offers 3 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
- Pipelines to track deals through every stage
- Shared contact database
- Task management
- Automation
- Email tracking
- Mail merge
- and 2 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
Streak Key Features
- Pipelines to track deals through every stage
- Shared contact database
- Task management
- Automation
- Email tracking
- Mail merge
- Snippets
- Thread Splitter
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 Streak
- Pipelines to track deals through every stage
- Shared contact database
- Task management
- Automation
- Email tracking
- Mail merge
- Snippets
- Thread Splitter
Integration Ecosystem
MailerCheck Integrations
MailerCheck connects with: MailerLite, Mailchimp, ActiveCampaign, GetResponse, ConvertKit, Zapier, Make.
Streak Integrations
Streak connects with: Google Workspace, Gmail, Slack, LinkedIn, ChatGPT, Claude, Allo.
Integrations listed only by MailerCheck: MailerLite, Mailchimp, ActiveCampaign, GetResponse, ConvertKit, Zapier, Make.
Integrations listed only by Streak: Google Workspace, Gmail, Slack, LinkedIn, ChatGPT, Claude, Allo.
Use Case Recommendations
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
Best Fit for Streak
- Sales teams tracking deals from first touch to close
- Managers who need pipeline visibility and forecasting
- Growing teams that need scalable contact management
Feature Comparison Summary
| Feature | MailerCheck | Streak |
|---|---|---|
| Starting Price | Free | $59/mo |
| Top Tier Price | Usage-based | $159/mo |
| Total Features Listed | 8 | 8 |
| Integrations | 7 | 7 |
| Founded | N/A | 2011 |
Getting Started Checklist
- Define your B2B lead data and contact enrichment and customer relationship management and sales pipeline tracking requirements and monthly budget
- Estimate your expected data credits or contact lookups and contacts and deals 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 serves the B2B lead data and contact enrichment side of an outbound stack and Streak the customer relationship management and sales pipeline tracking side. MailerCheck offers a more accessible entry point, while Streak starts at $59/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 Streak for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between MailerCheck and Streak?
- MailerCheck is a data enrichment tool focused on B2B lead data and contact enrichment, including email list verification and inbox placement testing. Streak is a CRM platform built into Gmail for customer relationship management and sales pipeline tracking, adding features like pipelines, task management, and email tracking on top of Google Workspace.
- Which is cheaper, MailerCheck or Streak?
- MailerCheck is cheaper at the entry level, offering a free plan with 10 free credits, compared to Streak's Pro plan starting at $59/mo. MailerCheck then moves to a pay as you go model at $0.01 per credit, while Streak has three fixed monthly tiers going up to $159/mo for Enterprise.
- Can I use MailerCheck and Streak together?
- Yes, many teams use both since they solve different problems. MailerCheck handles finding and verifying accurate contact data for target accounts, while Streak organizes those contacts, tracks deals through pipeline stages, and manages forecasting inside Gmail.
- What integrations does MailerCheck support?
- MailerCheck connects with MailerLite, Mailchimp, ActiveCampaign, GetResponse, ConvertKit, Zapier, and Make. This is a total of 7 integrations listed on MailerCheck's own site, matching the 7 integrations listed by Streak.
- Who should choose Streak over MailerCheck?
- Sales teams tracking deals from first touch to close, managers who need pipeline visibility and forecasting, and growing teams that need scalable contact management are best suited to Streak. It is built directly into Gmail so pipelines, contacts, and tasks live in the inbox teams already use.
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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