Lead411 vs mailfloss: Data Enrichment Tool Comparison
Compare Lead411 and mailfloss side by side. See pricing, features, and integrations to choose the right data enrichment tool for your needs.
Lead411 is a B2B lead intelligence platform offering verified emails, direct dials, and Bombora intent data starting at $49/mo, while mailfloss is an email verification service that cleans email lists daily starting at $29/mo. Choose Lead411 for prospecting and contact enrichment, and mailfloss for maintaining email list health across marketing platforms.
Key takeaways
- mailfloss's entry plan (Lite) costs $29/mo, while Lead411's entry plan (Spark) costs $49/mo.
- Lead411 offers 2 pricing tiers (Spark and Ignite), while mailfloss offers 4 pricing tiers (Lite, Business, Pro, and prepaid credits).
- mailfloss's Pro plan costs $209/mo for 125,000 credits per month.
- Lead411 provides a 7-day free trial that includes 50 leads.
- Lead411 and mailfloss share only two listed integrations: HubSpot and Zapier.
Reviewed and updated September 4, 2026
Lead411 vs mailfloss: Data Enrichment Tool Comparison
If you are comparing B2B lead data and contact enrichment tools, Lead411 and mailfloss will likely both appear on your radar. They share some surface-level similarities, but the details reveal important differences in pricing, capability, and target audience.
The Quick Answer
By each vendor's own wording, Lead411 lists verified emails and direct dials and bombora intent data, while mailfloss lists cleans your list daily and removes addresses that decay over time. A capability both offer can appear under different names, so read both feature lists below.
mailfloss offers a lower entry point at $29/mo compared to Lead411 at $49/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
Lead411 is B2B lead intelligence platform with verified emails, direct dials, growth intent data, and unlimited search capabilities.
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.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Spark
Lite
Lead411 Pricing (as of September 2026)
| Plan | Price | Contacts |
|---|---|---|
| Spark | $49/mo | 1000 Exports / Month |
| Ignite | $150/mo | 1000+ Exports / Month |
Source: Lead411 Pricing
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
Pricing Analysis
mailfloss offers the lower entry point ($29/mo vs $49/mo). Teams watching their budget will appreciate the savings, especially when starting out.
mailfloss offers 4 pricing tiers compared to Lead411's 2, giving you more granularity as you scale.
Features Breakdown
- Verified emails and direct dials
- Bombora intent data
- Growth intent signals
- Unlimited email views
- Chrome extension for LinkedIn
- CRM enrichment
- and 4 more listed below
- 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
Lead411 Key Features
- Verified emails and direct dials
- Bombora intent data
- Growth intent signals
- Unlimited email views
- Chrome extension for LinkedIn
- CRM enrichment
- Advanced search filters
- Sales intelligence alerts
- CSV export
- 7-day free trial with 50 leads
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
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 Lead411
- Verified emails and direct dials
- Bombora intent data
- Growth intent signals
- Unlimited email views
- Chrome extension for LinkedIn
- CRM enrichment
- Advanced search filters
- Sales intelligence alerts
- CSV export
- 7-day free trial with 50 leads
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
Integration Ecosystem
Lead411 Integrations
Lead411 connects with: Salesforce, HubSpot, Zoho CRM, Pipedrive, Outreach, SalesLoft, Zapier, Make.
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.
Shared Integrations
Both tools integrate with: HubSpot, Zapier.
Integrations listed only by Lead411: Salesforce, Zoho CRM, Pipedrive, Outreach, SalesLoft, Make.
Integrations listed only by mailfloss: Mailchimp, Klaviyo, 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.
Use Case Recommendations
Best Fit for Lead411
- Budget-conscious teams looking for an affordable data enrichment tool
- Revenue operations teams building targeted prospect lists
- Marketing teams enriching CRM data for segmentation
- Sales teams researching target accounts
Best Fit for mailfloss
- Budget-conscious teams looking for an affordable data enrichment tool
- Organizations with complex tech stacks needing broad integration support (29 integrations)
- Enterprise buyers who prefer custom pricing and dedicated support
Feature Comparison Summary
| Feature | Lead411 | mailfloss |
|---|---|---|
| Starting Price | $49/mo | $29/mo |
| Top Tier Price | $150/mo | Usage-based |
| Total Features Listed | 10 | 10 |
| Integrations | 8 | 29 |
| Founded | 2001 | N/A |
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
Lead411 and mailfloss both serve the B2B lead data and contact enrichment market. mailfloss offers a more accessible entry point at $29/mo, while Lead411 starts at $49/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 Lead411 and mailfloss for current information.
Frequently asked questions.
Frequently asked questions- What's the core difference between Lead411 and mailfloss?
- Lead411 is a B2B lead intelligence platform that provides verified emails, direct dials, and growth intent data for prospecting. mailfloss is an email verification service that connects to email marketing platforms and cleans mailing lists daily, removing bad addresses, fixing typos, and blocking bot signups in real time.
- Which tool is cheaper, Lead411 or mailfloss?
- mailfloss has the lower entry price at $29/mo for its Lite plan, compared to Lead411's Spark plan at $49/mo. mailfloss also offers more pricing tiers overall, four compared to Lead411's two, giving budget-conscious teams more granular options as they scale.
- Does Lead411 offer a free trial?
- Yes, Lead411 lists a 7-day free trial that includes 50 leads. This lets teams test the platform's verified email, direct dial, and intent data features before committing to a paid Spark or Ignite plan.
- What integrations do Lead411 and mailfloss have in common?
- Lead411 and mailfloss share two listed integrations: HubSpot and Zapier. Beyond that, Lead411 connects with CRM and sales tools like Salesforce, Zoho CRM, Pipedrive, Outreach, SalesLoft, and Make, while mailfloss connects with a wide range of email marketing platforms such as Mailchimp, Klaviyo, and ActiveCampaign.
- Which tool is better for sales teams researching target accounts?
- Lead411 is positioned as the better fit for sales teams researching target accounts, thanks to its verified emails, direct dials, and Bombora intent data. mailfloss is instead recommended for organizations with complex tech stacks that need broad email marketing platform integrations and daily list cleaning.
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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