Common Room vs mailfloss: Data Enrichment Tool Comparison
Compare Common Room and mailfloss side by side. See pricing, features, and integrations to choose the right data enrichment tool for your needs.
Common Room and mailfloss are both B2B contact enrichment tools, but they target different needs. Common Room is a buyer intelligence platform starting at $2500/mo with person360 and account scoring, while mailfloss is an email verification service starting at $29/mo that cleans lists daily and removes decaying addresses.
Key takeaways
- Common Room's entry plan, Essential, costs $2500/mo and covers up to 100k contacts with 5 seats included.
- mailfloss's entry plan, Lite, costs $29/mo and includes 10,000 credits per month.
- mailfloss offers 4 pricing tiers while Common Room offers 3 published tiers, with two requiring contact sales.
- Common Room and mailfloss share only two listed integrations: HubSpot and Zapier.
- mailfloss lists 10 key features including real-time API, webhooks, and single sign-on, while Common Room lists 8 including Person360 and Job Changes Tracking.
Reviewed and updated September 4, 2026
Common Room vs mailfloss: Data Enrichment Tool Comparison
If you are comparing B2B lead data and contact enrichment tools, Common Room and mailfloss 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, Common Room lists person360 and account & contact scoring, while mailfloss lists cleans your list daily and removes addresses that decay over time. 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 Common Room at $2500/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
Common Room is Buyer intelligence platform that unifies first-party data, enrichment and real-world buying signals into identity-resolved person and account profiles, with AI agents and embedded workflows.
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.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Essential
Lite
Common Room Pricing (as of September 2026)
| Plan | Price | Contacts |
|---|---|---|
| Essential | $2500/mo | Up to 100k contacts, 5 seats included, 5k RoomieAI research credits and 2.5k Prospector credits |
| Advanced | Contact Sales | Up to 250k contacts, 15 seats included, 7.5k RoomieAI research credits and 7.5k Prospector credits |
| Enterprise | Contact Sales | Up to 750k contacts, 30 seats included, 10K RoomieAI research credits and 15K Prospector credits |
Source: Common Room Pricing
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
Pricing Analysis
mailfloss offers the lower entry point ($29/mo vs $2500/mo). Teams watching their budget will appreciate the savings, especially when starting out.
mailfloss offers 4 pricing tiers compared to Common Room's 3, giving you more granularity as you scale.
Features Breakdown
- Person360
- Account & Contact Scoring
- Ask CR Anything
- Spark Notifications
- Spark Briefs
- Custom Signals
- and 2 more listed below
- 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
Common Room Key Features
- Person360
- Account & Contact Scoring
- Ask CR Anything
- Spark Notifications
- Spark Briefs
- Custom Signals
- Job Changes Tracking
- Aggregated Signals
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
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 Common Room
- Person360
- Account & Contact Scoring
- Ask CR Anything
- Spark Notifications
- Spark Briefs
- Custom Signals
- Job Changes Tracking
- Aggregated Signals
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
Integration Ecosystem
Common Room Integrations
Common Room connects with: Slack, Salesforce, HubSpot, GitHub, Discord, LinkedIn, Snowflake, Marketo, Outreach, Zapier.
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.
Shared Integrations
Both tools integrate with: HubSpot, Zapier.
Integrations listed only by Common Room: Slack, Salesforce, GitHub, Discord, LinkedIn, Snowflake, Marketo, Outreach.
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.
Use Case Recommendations
Best Fit for Common Room
- Mid-market to enterprise teams with established B2B lead data and contact enrichment budgets
- Enterprise buyers who prefer custom pricing and dedicated support
- Revenue operations teams building targeted prospect lists
- Marketing teams enriching CRM data for segmentation
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
Feature Comparison Summary
| Feature | Common Room | mailfloss |
|---|---|---|
| Starting Price | $2500/mo | $29/mo |
| Top Tier Price | Contact Sales | Usage-based |
| Total Features Listed | 8 | 10 |
| Integrations | 10 | 29 |
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
Common Room and mailfloss both serve the B2B lead data and contact enrichment market. mailfloss offers a more accessible entry point at $29/mo, while Common Room starts at $2500/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 Common Room and mailfloss for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between Common Room and mailfloss?
- Common Room is a buyer intelligence platform that unifies first-party data, enrichment, and buying signals into identity-resolved profiles with AI agents. mailfloss is an email verification service that connects to email marketing platforms and cleans lists daily on autopilot, removing bad addresses and fixing typos in real time.
- Which tool is cheaper, Common Room or mailfloss?
- mailfloss is cheaper, starting at $29/mo for its Lite plan compared to Common Room's Essential plan at $2500/mo. mailfloss also offers more pricing tiers, four compared to Common Room's three published tiers, giving more granularity as usage scales.
- Do Common Room and mailfloss integrate with the same tools?
- They share only two listed integrations: HubSpot and Zapier. Common Room otherwise connects with tools like Slack, Salesforce, GitHub, Discord, LinkedIn, Snowflake, Marketo, and Outreach, while mailfloss connects with a large list of email marketing platforms such as Mailchimp, Klaviyo, and ActiveCampaign.
- Who is Common Room best suited for?
- Common Room is best suited for mid-market to enterprise teams with established B2B lead data and contact enrichment budgets. It also fits enterprise buyers who prefer custom pricing and dedicated support, given its Advanced and Enterprise tiers require contacting sales.
- What features does mailfloss offer that Common Room does not list?
- mailfloss lists features such as custom keep and remove rules, a real-time API, webhooks, automatic typo fixing, real-time bounce prevention, auto-tagging of subscribers after verification, and single sign-on. These appear only on mailfloss's own feature list, not Common Room's.
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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