mailfloss vs Prospeo: Data Enrichment Tool Comparison
Compare mailfloss and Prospeo side by side. See pricing, features, and integrations to choose the right data enrichment tool for your needs.
mailfloss is an email verification service that cleans email lists daily and removes decaying addresses, priced from $29 per month. Prospeo is a B2B lead search and data enrichment platform offering verified work emails, mobile numbers, and intent signals, with a free plan starting at $0 per month. The right choice depends on whether the priority is list cleaning or contact enrichment.
Key takeaways
- mailfloss's entry plan, Lite, costs $29 per month for 10,000 credits, while Prospeo's Free plan costs $0 per month for 100 credits.
- mailfloss lists 10 key features on its own page, compared with 8 features listed by Prospeo.
- mailfloss integrates with 29 platforms including Mailchimp, Klaviyo, and HubSpot, while Prospeo integrates with 10 platforms including Salesforce and Pipedrive.
- HubSpot is the only integration shared by both mailfloss and Prospeo.
- Prospeo's Pro plan costs $249 per month for 15,000 credits per user per month, while mailfloss's Pro plan costs $209 per month for 125,000 credits per month.
Reviewed and updated September 4, 2026
mailfloss vs Prospeo: Data Enrichment Tool Comparison
If you are comparing B2B lead data and contact enrichment tools, mailfloss and Prospeo 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 Prospeo lists people & company search and ai search & lookalikes. A capability both offer can appear under different names, so read both feature lists below.
Prospeo 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.
Prospeo is B2B lead search and data enrichment platform for verified work emails, direct mobile numbers, intent signals, and CRM data enrichment.
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
Prospeo Pricing (as of September 2026)
| Plan | Price | Contacts |
|---|---|---|
| Free | Free | 100 credits per month |
| Starter | $49/mo | 2,000 credits per user per month; 24,000 per user per year on yearly billing |
| Growth | $99/mo | 5,000 credits per user per month; 60,000 per user per year on yearly billing |
| Pro | $249/mo | 15,000 credits per user per month; 180,000 per user per year on yearly billing |
Source: Prospeo Pricing
Pricing Analysis
Prospeo offers the lower entry point ($0/mo vs $29/mo). Teams watching their budget will appreciate the savings, especially when starting out.
Prospeo 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
- People & Company Search
- AI Search & Lookalikes
- Chrome Extension
- CRM Data Enrichment
- Find mobile numbers
- Intent Signals
- 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
Prospeo Key Features
- People & Company Search
- AI Search & Lookalikes
- Chrome Extension
- CRM Data Enrichment
- Find mobile numbers
- Intent Signals
- CSV & API Enrichment
- Unused credits rollover
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 Prospeo
- People & Company Search
- AI Search & Lookalikes
- Chrome Extension
- CRM Data Enrichment
- Find mobile numbers
- Intent Signals
- CSV & API Enrichment
- Unused credits rollover
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.
Prospeo Integrations
Prospeo connects with: Salesforce, HubSpot, Pipedrive, Zoho, Close, monday.com, Smartlead, Instantly, Lemlist, Salesloft.
Shared Integrations
Both tools integrate with: HubSpot.
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, Zapier.
Integrations listed only by Prospeo: Salesforce, Pipedrive, Zoho, Close, monday.com, Smartlead, Instantly, Lemlist, Salesloft.
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 Prospeo
- 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 | Prospeo |
|---|---|---|
| Starting Price | $29/mo | Free |
| Top Tier Price | Usage-based | $249/mo |
| Total Features Listed | 10 | 8 |
| Integrations | 29 | 10 |
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 Prospeo both serve the B2B lead data and contact enrichment market. Prospeo 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 Prospeo for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between mailfloss and Prospeo?
- mailfloss is an email verification service that cleans email lists daily on autopilot, removing bad addresses and fixing typos, while Prospeo is a B2B lead search and data enrichment platform for finding verified work emails, mobile numbers, and intent signals. They target related but distinct parts of the data quality problem.
- How much does mailfloss cost?
- mailfloss's Lite plan costs $29 per month for 10,000 credits, Business costs $59 per month for 25,000 credits, and Pro costs $209 per month for 125,000 credits. There is also a usage-based prepaid credits option for one-time list uploads.
- How much does Prospeo cost?
- Prospeo offers a Free plan at $0 per month for 100 credits, a Starter plan at $49 per month for 2,000 credits per user, a Growth plan at $99 per month for 5,000 credits per user, and a Pro plan at $249 per month for 15,000 credits per user per month.
- Which integrations do mailfloss and Prospeo share?
- mailfloss and Prospeo both integrate with HubSpot, but their integration lists otherwise do not overlap. mailfloss connects with 29 tools including Mailchimp and Klaviyo, while Prospeo connects with 10 tools including Salesforce and Pipedrive.
- Which tool is better for budget-conscious teams?
- Prospeo offers a lower entry point at $0 per month compared with mailfloss's $29 per month starting price. Prospeo's free tier also lets teams evaluate the platform without upfront cost, which the article notes is helpful for budget-conscious buyers.
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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