mailfloss vs Zeliq: Data Enrichment Tool vs Sales Engagement Platform Comparison
Compare mailfloss (data enrichment tool) and Zeliq (sales engagement platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
mailfloss is a data enrichment tool built for B2B contact enrichment and daily list cleaning, starting at $29/mo. Zeliq is a sales engagement platform for multichannel outreach across email, call, and social, with a free entry tier. Teams that need accurate contact data should choose mailfloss; teams coordinating outreach across channels should choose Zeliq. Many teams use both together.
Key takeaways
- mailfloss pricing starts at $29 per month for the Lite plan with 10,000 credits per month, scaling up to $209 per month for the Pro plan with 125,000 credits.
- Zeliq offers a free Basic plan allowing import of up to 100 leads per month and 2 active email-only sequences, with a Starter plan at $59 per month.
- mailfloss lists 4 pricing tiers compared to Zeliq's 3 tiers.
- mailfloss integrates with email marketing platforms such as Mailchimp, Klaviyo, HubSpot, and ActiveCampaign, while Zeliq integrates with HubSpot, Salesforce, Pipedrive, and Aircall.
- Both mailfloss and Zeliq share an integration with HubSpot.
Reviewed and updated September 4, 2026
mailfloss vs Zeliq: Data Enrichment Tool vs Sales Engagement Platform Comparison
mailfloss (data enrichment tool) and Zeliq (sales engagement platform) sit next to each other in many outbound stacks. They are not substitutes for each other on every job, so this comparison covers pricing, features, and integrations for each and points out where the two meet.
The Quick Answer
mailfloss is a data enrichment tool for B2B lead data and contact enrichment; Zeliq is a sales engagement platform for multi-channel sales outreach and engagement tracking. By each vendor's own wording, mailfloss lists cleans your list daily and removes addresses that decay over time, and Zeliq lists multichannel sequences across email, call and social and lead search with basic and advanced filters.
Zeliq 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, mailfloss is the one built for it; for coordinating outreach across email, phone, and social channels, that is Zeliq. Many teams run one of each.
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.
Zeliq is Sales prospecting and engagement platform that combines a lead search and waterfall enrichment hub with multichannel sequences across email, calls and social, plus a connected dialer and CRM sync.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Lite
Basic
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
Zeliq Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Basic | Free | Import up to 100 leads per month | Run 2 active sequences (emails only) |
| Starter | $59/mo | 750 credits / month | 75 phone numbers or 750 emails |
| Custom | Contact Sales | Starts as from 24k credits/user/year | - |
Source: Zeliq Pricing
Pricing Analysis
Zeliq offers the lower entry point ($0/mo vs $29/mo). Teams watching their budget will appreciate the savings, especially when starting out.
mailfloss offers 4 pricing tiers compared to Zeliq's 3, giving you more granularity as you scale.
Zeliq 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
- Multichannel sequences across email, call and social
- Lead search with basic and advanced filters
- Enrichment Hub with waterfall enrichment
- Chrome extension for enrichment
- Lead engagement scoring
- Dialer connection for calling from the platform
- and 4 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
Zeliq Key Features
- Multichannel sequences across email, call and social
- Lead search with basic and advanced filters
- Enrichment Hub with waterfall enrichment
- Chrome extension for enrichment
- Lead engagement scoring
- Dialer connection for calling from the platform
- Social automation
- SDR and manager cockpits for reporting
- Two-way CRM integration to pull and push records
- Enrichment API
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 Zeliq
- Multichannel sequences across email, call and social
- Lead search with basic and advanced filters
- Enrichment Hub with waterfall enrichment
- Chrome extension for enrichment
- Lead engagement scoring
- Dialer connection for calling from the platform
- Social automation
- SDR and manager cockpits for reporting
- Two-way CRM integration to pull and push records
- Enrichment API
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.
Zeliq Integrations
Zeliq connects with: HubSpot, Salesforce, Pipedrive, Aircall, Ringover, Gmail, Microsoft, API.
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 Zeliq: Salesforce, Pipedrive, Aircall, Ringover, Gmail, Microsoft, API.
Use Case Recommendations
Best Fit for mailfloss
- Budget-conscious teams looking for an affordable data enrichment tool
- Organizations with complex tech stacks needing broad integration support (29 integrations)
- Enterprise buyers who prefer custom pricing and dedicated support
Best Fit for Zeliq
- Budget-conscious teams looking for an affordable sales engagement platform
- 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 | Zeliq |
|---|---|---|
| Starting Price | $29/mo | Free |
| Top Tier Price | Usage-based | Contact Sales |
| Total Features Listed | 10 | 10 |
| Integrations | 29 | 8 |
Getting Started Checklist
- Define your B2B lead data and contact enrichment and multi-channel sales outreach and engagement tracking requirements and monthly budget
- Estimate your expected data credits or contact lookups and sequences and engagement actions 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 serves the B2B lead data and contact enrichment side of an outbound stack and Zeliq the multi-channel sales outreach and engagement tracking side. Zeliq 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 Zeliq for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between mailfloss and Zeliq?
- mailfloss is a data enrichment tool focused on B2B lead data and contact enrichment, cleaning email lists daily and removing addresses that decay over time. Zeliq is a sales engagement platform for multichannel outreach, offering sequences across email, call, and social along with lead search and enrichment tools.
- Which tool is cheaper, mailfloss or Zeliq?
- Zeliq has the lower entry point with a free Basic plan, while mailfloss starts at $29 per month for its Lite plan. Zeliq's paid Starter plan costs $59 per month, the same price as mailfloss's Business plan, which offers 25,000 credits per month.
- Can mailfloss and Zeliq be used together?
- Yes, many teams run both tools together since they serve different purposes in an outbound stack. mailfloss handles contact data accuracy through email verification and list cleaning, while Zeliq manages multichannel outreach and engagement tracking across email, calls, and social channels.
- Does Zeliq have a free plan?
- Yes, Zeliq offers a free Basic plan that allows importing up to 100 leads per month and running 2 active email-only sequences. This is useful for evaluating the platform without upfront cost, whereas mailfloss's lowest tier starts at $29 per month.
- What integrations does mailfloss support compared to Zeliq?
- mailfloss integrates with email marketing platforms including Mailchimp, Klaviyo, HubSpot, ActiveCampaign, Kit, beehiiv, and many others. Zeliq integrates with CRM and communication tools including HubSpot, Salesforce, Pipedrive, Aircall, Ringover, Gmail, and Microsoft. Both tools share an integration with HubSpot.
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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