mailfloss vs Streak: Data Enrichment Tool vs CRM Platform Comparison
Compare mailfloss (data enrichment tool) and Streak (CRM platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
mailfloss is a data enrichment tool for B2B lead data and contact verification, priced from $29/mo, while Streak is a CRM platform built into Gmail for pipeline tracking and contacts, priced from $59/mo. They cover different parts of the sales workflow, so many teams use both rather than choosing one over the other.
Key takeaways
- mailfloss entry pricing starts at $29/mo for the Lite plan with 10,000 credits per month.
- Streak entry pricing starts at $59/mo for the Pro plan.
- mailfloss lists 4 pricing tiers, Lite, Business, Pro, and prepaid credits, compared to Streak's 3 tiers, Pro, Pro+, and Enterprise.
- mailfloss lists 29 integrations including Mailchimp, HubSpot, ActiveCampaign, and Zapier, while Streak lists integrations with Google Workspace, Gmail, Slack, LinkedIn, ChatGPT, Claude, and Allo.
- Streak is built directly into Gmail, keeping pipelines, contacts, and tasks in the same inbox teams already use.
Reviewed and updated September 5, 2026
mailfloss vs Streak: Data Enrichment Tool vs CRM Platform Comparison
Sales teams building an outbound stack often weigh mailfloss, a data enrichment tool for B2B lead data and contact enrichment, against Streak, a CRM platform for customer relationship management and sales pipeline tracking. 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
mailfloss 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, mailfloss lists cleans your list daily and removes addresses that decay over time, and Streak lists pipelines to track deals through every stage and shared contact database.
mailfloss offers a lower entry point at $29/mo compared to Streak at $59/mo.
If your priority is finding accurate contact data for target accounts, mailfloss 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
mailfloss is mailfloss is an email verification service that connects to your email marketing platform and cleans the list daily on autopilot, removing bad addresses, fixing typos and blocking bot and spam signups in real time. Subscriptions are sized by credits per month; prepaid credits cover one-time list uploads.
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
Lite
Pro
mailfloss Pricing (as of September 2026)
| Plan | Price | Emails |
|---|---|---|
| Lite | $29/mo | 10,000 credits/month |
| Business | $59/mo | 25,000 credits/month |
| Pro | $209/mo | 125,000 credits/month |
| Prepaid credits | Usage-based | - |
Source: mailfloss Pricing
Streak Pricing (as of September 2026)
| Plan | Price |
|---|---|
| Pro | $59/mo |
| Pro+ | $89/mo |
| Enterprise | $159/mo |
Source: Streak Pricing
Pricing Analysis
mailfloss is more affordable at the entry level ($29/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.
mailfloss offers 4 pricing tiers compared to Streak's 3, giving you more granularity as you scale.
Features Breakdown
- Cleans your list daily
- Removes addresses that decay over time
- Custom keep and remove rules
- Zapier integration
- Real-time API
- Webhooks
- and 4 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
mailfloss Key Features
- Cleans your list daily
- Removes addresses that decay over time
- Custom keep and remove rules
- Zapier integration
- Real-time API
- Webhooks
- Automatically fixes typos
- Prevents bounces in real-time
- Auto-tags subscribers after verification
- Single sign-on
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 mailfloss
- Cleans your list daily
- Removes addresses that decay over time
- Custom keep and remove rules
- Zapier integration
- Real-time API
- Webhooks
- Automatically fixes typos
- Prevents bounces in real-time
- Auto-tags subscribers after verification
- Single sign-on
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
mailfloss Integrations
mailfloss connects with: Mailchimp, Klaviyo, HubSpot, ActiveCampaign, Kit, beehiiv, GoHighLevel, Braze, AWeber, Drip, MailerLite, Constant Contact, Brevo, Campaign Monitor, GetResponse, Ontraport, iContact, Sendlane, Moosend, Keap, Intercom, Customer.io, Iterable, Ghost, Emma, SendPulse, Benchmark, Mautic, Zapier.
Streak Integrations
Streak connects with: Google Workspace, Gmail, Slack, LinkedIn, ChatGPT, Claude, Allo.
Integrations listed only by mailfloss: Mailchimp, Klaviyo, HubSpot, ActiveCampaign, Kit, beehiiv, GoHighLevel, Braze, AWeber, Drip, MailerLite, Constant Contact, Brevo, Campaign Monitor, GetResponse, Ontraport, iContact, Sendlane, Moosend, Keap, Intercom, Customer.io, Iterable, Ghost, Emma, SendPulse, Benchmark, Mautic, Zapier.
Integrations listed only by Streak: Google Workspace, Gmail, Slack, LinkedIn, ChatGPT, Claude, Allo.
Use Case Recommendations
Best Fit for mailfloss
- Budget-conscious teams looking for an affordable data enrichment tool
- Teams that need a wide feature set (10 capabilities listed)
- Organizations with complex tech stacks needing broad integration support (29 integrations)
- Enterprise buyers who prefer custom pricing and dedicated support
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 | mailfloss | Streak |
|---|---|---|
| Starting Price | $29/mo | $59/mo |
| Top Tier Price | Usage-based | $159/mo |
| Total Features Listed | 10 | 8 |
| Integrations | 29 | 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
mailfloss serves the B2B lead data and contact enrichment side of an outbound stack and Streak the customer relationship management and sales pipeline tracking side. mailfloss offers a more accessible entry point at $29/mo, 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 mailfloss and Streak for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between mailfloss and Streak?
- mailfloss is a data enrichment tool focused on B2B lead data and contact enrichment, cleaning email lists daily and removing decaying addresses. Streak is a CRM platform for customer relationship management and sales pipeline tracking, built directly into Gmail. They address different parts of an outbound sales workflow rather than competing for the same job.
- Which is cheaper, mailfloss or Streak?
- mailfloss is cheaper at the entry level, starting at $29/mo for its Lite plan, compared to Streak's Pro plan at $59/mo. mailfloss also offers more pricing tiers overall, four compared to Streak's three, giving more granularity as usage scales.
- Can I use mailfloss and Streak together?
- Yes, the article notes that many teams run one of each since the tools serve different workflow needs. mailfloss handles contact data accuracy and enrichment while Streak organizes contacts, tracks deals, and forecasts revenue inside Gmail.
- What integrations does Streak support compared to mailfloss?
- Streak lists integrations with Google Workspace, Gmail, Slack, LinkedIn, ChatGPT, Claude, and Allo. mailfloss lists a much broader set of 29 integrations, including Mailchimp, HubSpot, ActiveCampaign, Klaviyo, and Zapier, reflecting its focus on connecting to email marketing platforms.
- Who should choose mailfloss over Streak?
- Budget-conscious teams looking for an affordable data enrichment tool, teams needing a wide feature set, and organizations with complex tech stacks that require broad integration support are best suited to mailfloss. It lists 10 key capabilities and 29 integrations, more than Streak lists on its own pages.
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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