If you're running outbound campaigns or feeding leads into your CRM, you already know this: bad data burns time, money, and domain reputation.
That's why data enrichment is no longer optional—it's your first line of defense.
But here’s the kicker: no single provider gets you 100% of the data you need. That's where Cleanlist steps in with waterfall enrichment—we layer the best enrichment tools together so you always get the most complete, verified data possible.
Below, we’ve compiled the top 15 enrichment providers on the market in 2025. Whether you’re enriching emails, phone numbers, LinkedIn URLs, or technographics, these are the tools you need to know.
What is Waterfall Enrichment?
Before diving in, let's get one thing straight: most enrichment tools rely on a single data source or methodology. Cleanlist uses waterfall enrichment, meaning we stack multiple providers—like LeadMagic, AnyMailFinder, Findymail, and more—in priority order to maximize data coverage, accuracy, and deliverability.
If Provider A can't find the email? We try Provider B. Then C. Then D.
If we find a match, we verify it, validate it, and clean it up before it ever hits your CRM.
👉 Try waterfall enrichment free at Cleanlist.ai
🔥 Top 15 Enrichment Providers in 2025
1. LeadMagic
LeadMagic specializes in identifying anonymous website visitors and turning them into enriched company + contact records. It’s great for reverse IP and firmographic enrichment but also supports basic contact-level enrichment.
Use case: Reveal who's visiting your site, even if they don't fill out a form.
Cleanlist compatibility: ✅ Used in our firmographic enrichment waterfall.
2. AnyMailFinder
A staple in the email hunter scene, AnyMailFinder delivers verified emails by guessing and testing address formats. Solid coverage on corporate emails.
Use case: Email-only enrichment for outbound SDR teams.
Cleanlist compatibility: ✅ Built into our primary waterfall sequence for B2B email enrichment.
3. IcyPeas
A newer player with surprisingly high-quality email match rates. IcyPeas is API-first and developer-friendly.
Use case: Programmatic enrichment pipelines with high volume.
Cleanlist compatibility: ✅ Part of our programmatic waterfall layer.
4. Prospeo
Prospeo is a powerful tool that enriches emails, LinkedIn URLs, and job titles. It’s especially good for EU and LATAM coverage.
Use case: Expanding enrichment into non-U.S. regions.
Cleanlist compatibility: ✅ Key provider in our region-specific fallback layers.
5. Datagma
Datagma’s strength is enriching contact details from job titles and companies using behavioral signals and scraping logic. Great for startup data.
Use case: Finding emerging tech company contacts.
Cleanlist compatibility: ✅ We use it in our enrichment waterfall for fast-growing B2B startups.
6. Findymail
A lean, modern enrichment provider with surprisingly good accuracy. Findymail prioritizes verified deliverability and offers integrations with LinkedIn scraping tools.
Use case: SDRs who want reliable data to plug into cold email tools.
Cleanlist compatibility: ✅ Integrated into our deliverability-focused waterfall.
7. Apollo.io
Apollo does more than enrichment—it’s a full-blown sales engagement platform. That said, its data enrichment coverage is one of the best for U.S. contacts.
Use case: One-stop-shop for email + phone enrichment.
Limitations: Some of the data is outdated or generic.
Cleanlist compatibility: ⚠️ Used conditionally for fallback when no better data exists.
8. Hunter.io
Hunter has long been a favorite for domain-based email searching. Simple, effective, and offers bulk enrichment.
Use case: Fast domain-to-email lookups at scale.
Cleanlist compatibility: ✅ We use it as a secondary fallback provider in waterfall mode.
9. People Data Labs (PDL)
PDL is an enterprise-grade data provider with access to over 3 billion person and company records. Great for big-data enrichment.
Use case: Enriching full profiles across B2B platforms.
Cleanlist compatibility: ✅ Used for enterprise-grade profile hydration.
10. Clearbit
Clearbit is the original enrichment API. It’s good for real-time enrichment at lead capture or form fill.
Use case: Form fill enrichment or reverse IP firmographics.
Limitations: Higher cost per lookup.
Cleanlist compatibility: ✅ Used in real-time enrichment pipelines.
11. ZoomInfo
You already know ZoomInfo—massive database, accurate data, high cost. Best used if you’re already on a plan.
Use case: Deep enterprise contact enrichment.
Cleanlist compatibility: ⚠️ Used when available via client integrations.
12. Cognism
Cognism is a go-to for GDPR-compliant enrichment in the UK and Europe. It includes emails and mobile numbers.
Use case: EU and UK outbound sales.
Cleanlist compatibility: ✅ Used in regional waterfall logic.
13. Lusha
Lusha has a Chrome extension and API that enriches business profiles, especially phone numbers. It’s popular for phone-centric sales teams.
Use case: Mobile number enrichment.
Cleanlist compatibility: ✅ Used in Cleanlist’s phone number enrichment pipeline.
14. Snov.io
Snov.io is an all-in-one platform like Apollo, but with better pricing for startups. It has email enrichment, domain search, and drip campaigns.
Use case: Enrichment + outreach for budget-conscious teams.
Cleanlist compatibility: ⚠️ Secondary provider in fallback mode.
15. Dropcontact
A French provider with GDPR-by-design compliance and some of the best deduplication and CRM hygiene features out there.
Use case: CRM enrichment and deduplication.
Cleanlist compatibility: ✅ Used in cleaning and deduplication layers.
🧠 Why Cleanlist Combines Them All
No single provider nails it every time. That’s why Cleanlist doesn’t rely on just one—we run waterfall enrichment across all of the above, in real-time or bulk mode, to get you:
✅ Higher email match rates
✅ Lower bounce rates
✅ More verified phone numbers
✅ Cleaner data for upload
Start your free enrichment test → https://cleanlist.ai
Final Thoughts
If you’re still enriching leads with one tool, you’re leaving money on the table. A single enrichment miss can tank a campaign, cost you a deal, or trigger an email blacklist.
With Cleanlist’s waterfall enrichment, you don’t need to pick between LeadMagic, Findymail, or AnyMailFinder—we stack them to get you the most complete lead possible.
→ Get your list enriched by the best. Try Cleanlist now.
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