mailfloss vs SignalHire: Data Enrichment Tool Comparison
Compare mailfloss and SignalHire side by side. See pricing, features, and integrations to choose the right data enrichment tool for your needs.
mailfloss and SignalHire both target B2B contact data needs but differ in approach: mailfloss is an email verification tool that cleans email lists daily on autopilot starting at $29/mo, while SignalHire is a real-time contact finder with a browser extension and free entry tier at $0/mo. The right pick depends on budget and specific needs.
Key takeaways
- mailfloss pricing starts at $29/mo for the Lite plan with 10,000 credits per month, while SignalHire offers a free entry tier at $0/mo.
- mailfloss offers 4 pricing tiers including Lite, Business, Pro, and prepaid credits, compared to SignalHire's 3 tiers.
- mailfloss integrates with 29 platforms including Mailchimp, Klaviyo, HubSpot, and ActiveCampaign, while SignalHire integrates with 7 including Salesforce, Greenhouse, and Lever.
- mailfloss and SignalHire share only two listed integrations: HubSpot and Zapier.
- SignalHire lists unlimited users on all plans and a browser extension for LinkedIn, Facebook, and Twitter as key features, while mailfloss lists daily list cleaning and real-time typo fixing.
Reviewed and updated September 4, 2026
mailfloss vs SignalHire: Data Enrichment Tool Comparison
If you are comparing B2B lead data and contact enrichment tools, mailfloss and SignalHire 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, mailfloss lists cleans your list daily and removes addresses that decay over time, while SignalHire lists real-time verified contact data and browser extension for linkedin, facebook, twitter. A capability both offer can appear under different names, so read both feature lists below.
SignalHire offers a lower entry point at $0/mo compared to mailfloss at $29/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
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.
SignalHire is Real-time verified contact finder with browser extension for LinkedIn, Facebook, and Twitter, plus team collaboration features.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Lite
Free
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
SignalHire Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Free | Free | 5 or 10* credits | - |
| Emails (1000 credits, billed monthly) | $69/mo | 1000 credits | 1000 credits |
| Phones (435 credits, billed monthly) | $69/mo | 435 credits | - |
Source: SignalHire Pricing
Pricing Analysis
SignalHire offers the lower entry point ($0/mo vs $29/mo). Teams watching their budget will appreciate the savings, especially when starting out.
mailfloss offers 4 pricing tiers compared to SignalHire's 3, giving you more granularity as you scale.
SignalHire includes a free tier, which is helpful for evaluating the platform without upfront cost.
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
- Real-time verified contact data
- Browser extension for LinkedIn, Facebook, Twitter
- Unlimited users on all plans
- Team management and collaboration
- CSV export
- ATS and CRM integration
- and 3 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
SignalHire Key Features
- Real-time verified contact data
- Browser extension for LinkedIn, Facebook, Twitter
- Unlimited users on all plans
- Team management and collaboration
- CSV export
- ATS and CRM integration
- Bulk search capabilities
- Technology tracking
- Company search
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 SignalHire
- Real-time verified contact data
- Browser extension for LinkedIn, Facebook, Twitter
- Unlimited users on all plans
- Team management and collaboration
- CSV export
- ATS and CRM integration
- Bulk search capabilities
- Technology tracking
- Company search
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.
SignalHire Integrations
SignalHire connects with: Salesforce, HubSpot, Greenhouse, Lever, Zapier, Gmail, Outlook.
Shared Integrations
Both tools integrate with: HubSpot, Zapier.
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.
Integrations listed only by SignalHire: Salesforce, Greenhouse, Lever, Gmail, Outlook.
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 SignalHire
- 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 | mailfloss | SignalHire |
|---|---|---|
| Starting Price | $29/mo | Free |
| Top Tier Price | Usage-based | $69/mo |
| Total Features Listed | 10 | 9 |
| Integrations | 29 | 7 |
| Founded | N/A | 2015 |
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
mailfloss and SignalHire both serve the B2B lead data and contact enrichment market. SignalHire offers a more accessible entry point, while mailfloss starts at $29/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 SignalHire for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between mailfloss and SignalHire?
- mailfloss is an email verification service that connects to email marketing platforms and cleans lists daily on autopilot, removing bad addresses and fixing typos in real time. SignalHire is a real-time verified contact finder with a browser extension for LinkedIn, Facebook, and Twitter, plus team collaboration features. They solve the same core challenge differently.
- Which tool is cheaper, mailfloss or SignalHire?
- SignalHire has the lower entry point at $0/mo with its free tier, compared to mailfloss which starts at $29/mo for its Lite plan. SignalHire's paid tiers for emails or phones are priced at $69/mo, while mailfloss offers additional tiers up to $209/mo for its Pro plan.
- Does mailfloss or SignalHire have more integrations?
- mailfloss lists 29 integrations including Mailchimp, Klaviyo, HubSpot, ActiveCampaign, Kit, and beehiiv, among others. SignalHire lists 7 integrations including Salesforce, HubSpot, Greenhouse, Lever, Zapier, Gmail, and Outlook. The two tools share only HubSpot and Zapier as common integrations.
- Does SignalHire offer a free plan?
- Yes, SignalHire offers a free tier that includes 5 or 10 credits, according to its own pricing page. This makes it possible to evaluate the platform without any upfront cost, unlike mailfloss which starts at $29/mo with no free tier listed.
- What are mailfloss's key features compared to SignalHire's?
- mailfloss lists features such as cleaning lists daily, removing decayed addresses, custom keep and remove rules, a real-time API, webhooks, and single sign-on. SignalHire lists real-time verified contact data, a browser extension for LinkedIn, Facebook, and Twitter, unlimited users on all plans, and ATS and CRM integration.
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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