mailfloss vs UserGems: Data Enrichment Tool Comparison

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

$29/momailfloss entry plan

Lite

$3333/moUserGems entry plan

Core

mailfloss Pricing (as of September 2026)

Source: mailfloss Pricing

UserGems Pricing (as of September 2026)

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

mailfloss lists

• 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

UserGems lists

• 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

Getting Started Checklist

1. Define your B2B lead data and contact enrichment requirements and monthly budget
2. Estimate your expected data credits or contact lookups to find the right tier
3. List the integrations your team currently relies on
4. Sign up for free trials or demos of both platforms
5. Run a small test with each tool before making a commitment
6. 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.