mailfloss vs UserGems: Data Enrichment Tool Comparison
Compare mailfloss and UserGems 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 per month for 10,000 credits, while UserGems is an account and contact enrichment platform with buying-signal detection and AI agents starting at $3333 per month for 4,000,000 credits. mailfloss offers 29 integrations and 4 pricing tiers, UserGems offers 8 integrations and 3 tiers.
Key takeaways
- mailfloss starts at $29 per month for 10,000 credits on its Lite plan, while UserGems starts at $3333 per month for 4,000,000 credits on its Core plan.
- mailfloss offers 4 pricing tiers (Lite, Business, Pro, and prepaid credits) compared to UserGems's 3 tiers (Core, Advanced, Elite).
- mailfloss lists 29 integrations including Mailchimp, Klaviyo, and HubSpot, while UserGems lists 8 integrations including Salesforce, Outreach, and HubSpot.
- HubSpot is the only integration shared between mailfloss and UserGems according to each vendor's own listed integrations.
- mailfloss focuses on daily email list cleaning and typo fixing, while UserGems focuses on buying-signal detection, account and contact scoring, and AI agents for outbound campaigns.
Reviewed and updated September 4, 2026
mailfloss vs UserGems: Data Enrichment Tool Comparison
If you are comparing B2B lead data and contact enrichment tools, mailfloss and UserGems 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 UserGems lists build list (create & enrich) and account & contact scoring. 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 UserGems at $3333/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.
UserGems is Surfaces companies and buyers showing buying signals, then discovers, enriches and scores the matching accounts and contacts. Deploys AI agents to run outbound and account-based marketing from those signals.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Lite
Core
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
UserGems Pricing (as of September 2026)
| Plan | Price | Contacts |
|---|---|---|
| Core | $3333/mo | 4,000,000 credits |
| Advanced | $6250/mo | 10,000,000 credits |
| Elite | $12500/mo | 25,000,000 credits |
Source: UserGems Pricing
Pricing Analysis
mailfloss is more affordable at the entry level ($29/mo vs $3333/mo). For teams with tight budgets or those just getting started with B2B lead data and contact enrichment, this price difference matters.
mailfloss offers 4 pricing tiers compared to UserGems's 3, giving you more granularity as you scale.
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
- Build List (create & enrich)
- Account & Contact Scoring
- Automated Campaigns
- Writing Agent
- Research Agent
- AI Co-pilot Chrome Extension
- 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
UserGems Key Features
- Build List (create & enrich)
- Account & Contact Scoring
- Automated Campaigns
- Writing Agent
- Research Agent
- AI Co-pilot Chrome Extension
- Contact-level Intent & Web Deanonymization
- CRM Hygiene
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 UserGems
- Build List (create & enrich)
- Account & Contact Scoring
- Automated Campaigns
- Writing Agent
- Research Agent
- AI Co-pilot Chrome Extension
- Contact-level Intent & Web Deanonymization
- CRM Hygiene
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.
UserGems Integrations
UserGems connects with: Salesforce, Hubspot, Outreach, Salesloft, Gong Engage, Linkedin, Meta, Google.
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 UserGems: Salesforce, Outreach, Salesloft, Gong Engage, Linkedin, Meta, Google.
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 UserGems
- Mid-market to enterprise teams with established B2B lead data and contact enrichment budgets
- Revenue operations teams building targeted prospect lists
- Marketing teams enriching CRM data for segmentation
- Sales teams researching target accounts
Feature Comparison Summary
| Feature | mailfloss | UserGems |
|---|---|---|
| Starting Price | $29/mo | $3333/mo |
| Top Tier Price | Usage-based | $12500/mo |
| Total Features Listed | 10 | 8 |
| Integrations | 29 | 8 |
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 UserGems both serve the B2B lead data and contact enrichment market. mailfloss offers a more accessible entry point at $29/mo, while UserGems starts at $3333/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 UserGems for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between mailfloss and UserGems?
- mailfloss is an email verification service that connects to your email marketing platform and cleans your list daily, removing bad addresses and fixing typos in real time. UserGems surfaces companies and buyers showing buying signals, then discovers, enriches, and scores matching accounts and contacts, and deploys AI agents to run outbound and account-based marketing.
- How much does mailfloss cost?
- mailfloss starts at $29 per month for its Lite plan, which includes 10,000 credits per month. Higher tiers include Business at $59 per month for 25,000 credits and Pro at $209 per month for 125,000 credits, plus a usage-based prepaid credits option for one-time list uploads.
- How much does UserGems cost?
- UserGems starts at $3333 per month for its Core plan, which includes 4,000,000 credits. The Advanced plan costs $6250 per month for 10,000,000 credits, and the Elite plan costs $12500 per month for 25,000,000 credits.
- Which tool has more integrations, mailfloss or UserGems?
- mailfloss has more integrations, listing 29 platforms including Mailchimp, Klaviyo, HubSpot, ActiveCampaign, and Zapier. UserGems lists 8 integrations, including Salesforce, HubSpot, Outreach, Salesloft, Gong Engage, LinkedIn, Meta, and Google. HubSpot is the only integration both tools list in common.
- Which tool is better for budget-conscious teams?
- mailfloss is the better fit for budget-conscious teams, since it offers a lower entry price of $29 per month compared to UserGems's $3333 per month entry price. mailfloss is also recommended for teams that need a wide feature set of 10 listed capabilities and broad integration support across 29 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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