mailfloss vs ZoomInfo: Data Enrichment Tool Comparison
Compare mailfloss and ZoomInfo side by side. See pricing, features, and integrations to choose the right data enrichment tool for your needs.
mailfloss is an email verification tool starting at $29/mo that cleans email lists daily and removes addresses that decay over time, while ZoomInfo is an enterprise B2B database with a free entry tier offering 260M+ published professional profiles and 100M+ company profiles. mailfloss suits budget-conscious teams needing broad integrations, ZoomInfo suits teams needing large-scale contact data.
Key takeaways
- mailfloss's entry plan costs $29/mo for 10,000 credits per month, while ZoomInfo's Lite plan is free with 10-25 credits per month.
- ZoomInfo lists 260M+ published professional profiles and 100M+ company profiles as core features.
- mailfloss lists 10 features including daily list cleaning, custom keep and remove rules, and single sign-on.
- mailfloss integrates with 29 platforms including Mailchimp, Klaviyo, and HubSpot, while ZoomInfo integrates with 6 platforms including Salesforce and HubSpot.
- HubSpot is the only integration shared by both mailfloss and ZoomInfo.
Reviewed and updated September 4, 2026
mailfloss vs ZoomInfo: Data Enrichment Tool Comparison
If you are comparing B2B lead data and contact enrichment tools, mailfloss and ZoomInfo 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 ZoomInfo lists 260m+ published professional profiles and 100m+ company profiles. A capability both offer can appear under different names, so read both feature lists below.
ZoomInfo 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.
ZoomInfo is Enterprise B2B database with 260M+ professional profiles, intent data, and comprehensive company intelligence.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Lite
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
ZoomInfo Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Lite (Free) | Free | 10-25 credits/month | N/A |
| Professional | $1250/mo | 5,000 credits/year | N/A |
| Advanced | $2083/mo | 10,000 credits/year | N/A |
| Elite | $3333/mo | 10,000 credits/year | N/A |
Source: ZoomInfo Pricing
Pricing Analysis
ZoomInfo offers the lower entry point ($0/mo vs $29/mo). Teams watching their budget will appreciate the savings, especially when starting out.
ZoomInfo 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
- 260M+ published professional profiles
- 100M+ company profiles
- 150M+ direct emails
- 135M+ verified phone numbers
- 65M+ direct dials
- Intent signals (11K+ topics)
- 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
ZoomInfo Key Features
- 260M+ published professional profiles
- 100M+ company profiles
- 150M+ direct emails
- 135M+ verified phone numbers
- 65M+ direct dials
- Intent signals (11K+ topics)
- Technographic data
- ZoomInfo Copilot AI
- GTM Studio
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 ZoomInfo
- 260M+ published professional profiles
- 100M+ company profiles
- 150M+ direct emails
- 135M+ verified phone numbers
- 65M+ direct dials
- Intent signals (11K+ topics)
- Technographic data
- ZoomInfo Copilot AI
- GTM Studio
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.
ZoomInfo Integrations
ZoomInfo connects with: Salesforce, HubSpot, Microsoft Dynamics 365, Marketo, Outreach, 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 ZoomInfo: Salesforce, Microsoft Dynamics 365, Marketo, Outreach, 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 ZoomInfo
- 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 | ZoomInfo |
|---|---|---|
| Starting Price | $29/mo | Free |
| Top Tier Price | Usage-based | $3333/mo |
| Total Features Listed | 10 | 9 |
| Integrations | 29 | 6 |
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 ZoomInfo both serve the B2B lead data and contact enrichment market. ZoomInfo 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 ZoomInfo for current information.
Frequently asked questions.
Frequently asked questions- How much does mailfloss cost compared to ZoomInfo?
- mailfloss starts at $29/mo for its Lite plan with 10,000 credits per month, while ZoomInfo offers a free Lite tier with 10-25 credits per month. ZoomInfo's paid plans range from $1250/mo to $3333/mo, all priced well above mailfloss's top tier of $209/mo.
- What integrations does mailfloss support?
- mailfloss integrates with 29 platforms, including Mailchimp, Klaviyo, HubSpot, ActiveCampaign, Kit, beehiiv, GoHighLevel, Braze, AWeber, and Zapier, among others. ZoomInfo integrates with a smaller list of six platforms, including Salesforce, HubSpot, Microsoft Dynamics 365, Marketo, Outreach, and SalesLoft.
- What data does ZoomInfo provide?
- ZoomInfo lists 260M+ published professional profiles, 100M+ company profiles, 150M+ direct emails, 135M+ verified phone numbers, and 65M+ direct dials, along with intent signals covering 11K+ topics. It also lists technographic data, ZoomInfo Copilot AI, and GTM Studio as features.
- Which tool is better for budget-conscious teams?
- mailfloss is positioned as the better fit for budget-conscious teams looking for an affordable data enrichment tool. It also offers a wide feature set with 10 listed capabilities and broad integration support across 29 platforms, making it suited to organizations with complex tech stacks.
- Do mailfloss and ZoomInfo share any integrations?
- Yes, both tools integrate with HubSpot, which is the only integration listed by both vendors. Beyond that shared integration, mailfloss lists 28 additional integrations of its own, while ZoomInfo lists five additional integrations not shared with mailfloss.
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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