mailfloss vs PredictLeads: Data Enrichment Tool Comparison
Compare mailfloss and PredictLeads side by side. See pricing, features, and integrations to choose the right data enrichment tool for your needs.
mailfloss and PredictLeads solve different problems: mailfloss cleans email lists daily by removing decaying addresses and fixing typos, while PredictLeads is a company intelligence API returning news events, job openings, and technologies. mailfloss starts at $29/mo with 10,000 credits, while PredictLeads offers a free tier with 100 API credits before moving to usage-based pricing.
Key takeaways
- mailfloss's Lite plan costs $29/mo for 10,000 credits per month, while its Business plan costs $59/mo for 25,000 credits.
- PredictLeads offers a free tier of up to 100 API calls per month before moving to usage-based pricing across five additional tiers.
- PredictLeads offers 7 pricing tiers compared to mailfloss's 4, giving more granularity as usage scales.
- mailfloss integrates with email platforms including Mailchimp, Klaviyo, HubSpot, ActiveCampaign, and Zapier, while PredictLeads integrates with Clay, n8n, Make.com, Pipedream, and Claude.
- PredictLeads provides full historic data from 2015 along with delta exports and point-in-time data, features not listed by mailfloss.
Reviewed and updated September 4, 2026
mailfloss vs PredictLeads: Data Enrichment Tool Comparison
If you are comparing B2B lead data and contact enrichment tools, mailfloss and PredictLeads 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 PredictLeads lists news events and job openings. A capability both offer can appear under different names, so read both feature lists below.
PredictLeads 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.
PredictLeads is Company intelligence API that returns news events, job openings, technologies, key customers and similar companies for a company, and pushes real-time signals to a webhook.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Lite
100 API credits 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
PredictLeads Pricing (as of September 2026)
| Plan | Price | Contacts |
|---|---|---|
| 100 API credits Free | Free | Up to 100 free API calls per month |
| 101-5,000 API Calls | Usage-based | 101 to 5,000 API calls |
| 5,001-10,000 API Calls | Usage-based | 5,001 to 10,000 API calls |
| 10,001-100,000 API Calls | Usage-based | 10,001 to 100,000 API calls |
| 100,001-500,000 API Calls | Usage-based | 100,001 to 500,000 API calls |
| 500,001+ API Calls | Usage-based | 500,001 or more API calls |
| Enterprise Access | Contact Sales | Track unlimited number of companies |
Source: PredictLeads Pricing
Pricing Analysis
PredictLeads offers the lower entry point ($0/mo vs $29/mo). Teams watching their budget will appreciate the savings, especially when starting out.
PredictLeads offers 7 pricing tiers compared to mailfloss's 4, giving you more granularity as you scale.
PredictLeads 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
- News Events
- Job Openings
- Technologies
- Key Customers
- Similar Companies
- Full historic data from 2015
- 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
PredictLeads Key Features
- News Events
- Job Openings
- Technologies
- Key Customers
- Similar Companies
- Full historic data from 2015
- Delta exports available
- All data point-in-time
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 PredictLeads
- News Events
- Job Openings
- Technologies
- Key Customers
- Similar Companies
- Full historic data from 2015
- Delta exports available
- All data point-in-time
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.
PredictLeads Integrations
PredictLeads connects with: Clay, n8n, Make.com, Pipedream, Apify, Postman, ActivePieces, Cargo, Claude.
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 PredictLeads: Clay, n8n, Make.com, Pipedream, Apify, Postman, ActivePieces, Cargo, Claude.
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 PredictLeads
- Budget-conscious teams looking for an affordable data enrichment tool
- Teams that want to start free and scale up as needs grow
- Enterprise buyers who prefer custom pricing and dedicated support
Feature Comparison Summary
| Feature | mailfloss | PredictLeads |
|---|---|---|
| Starting Price | $29/mo | Free |
| Top Tier Price | Usage-based | Contact Sales |
| Total Features Listed | 10 | 8 |
| Integrations | 29 | 9 |
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 PredictLeads both serve the B2B lead data and contact enrichment market. PredictLeads 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 PredictLeads for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between mailfloss and PredictLeads?
- mailfloss is an email verification service that cleans your email list daily and removes addresses that decay over time, while PredictLeads is a company intelligence API that returns news events, job openings, technologies, key customers, and similar companies for a given company.
- Which is cheaper, mailfloss or PredictLeads?
- PredictLeads has the lower entry point at $0/mo with a free tier of up to 100 API calls per month, compared to mailfloss's entry Lite plan at $29/mo for 10,000 credits per month.
- Does mailfloss integrate with Mailchimp or HubSpot?
- Yes, mailfloss connects with Mailchimp and HubSpot, along with other platforms like Klaviyo, ActiveCampaign, Kit, beehiiv, GoHighLevel, Braze, AWeber, Drip, MailerLite, Constant Contact, Brevo, Campaign Monitor, GetResponse, and Zapier.
- Does PredictLeads offer a free plan?
- Yes, PredictLeads offers a free tier that includes up to 100 API calls per month. Beyond that, pricing becomes usage-based across tiers ranging from 101 to 500,001 or more API calls, with an Enterprise Access option for tracking an unlimited number of companies.
- What tools does PredictLeads integrate with?
- PredictLeads connects with Clay, n8n, Make.com, Pipedream, Apify, Postman, ActivePieces, Cargo, and Claude, which differs significantly from mailfloss's integrations that focus on email marketing platforms.
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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