Enrichment Providers
Cleanlist.ai partners with industry-leading data providers to deliver the highest quality lead enrichment. Our waterfall enrichment system automatically uses multiple providers to maximize success rates.
Provider Categories
Email Enrichment Providers
Our waterfall system uses multiple email enrichment providers in sequence:
Primary Email Providers
-
Hunter.io
- Domain-based email finding
- Email pattern detection
- Confidence scoring
- B2B focus
-
Apollo.io
- Comprehensive B2B database
- Email verification included
- Company hierarchy data
- Contact information
-
Snov.io
- Email finder and verifier
- Multi-source validation
- Bulk enrichment support
- High deliverability rates
Secondary Email Providers
These providers are used as fallbacks to maximize coverage:
- Clearbit: Company and person data enrichment
- FullContact: Identity resolution and data enrichment
- EmailListValidation: Email verification and validation
- Public Sources: Validated public data sources
Phone Enrichment Providers
Phone number enrichment uses specialized providers:
Primary Phone Providers
-
ContactOut
- Direct dial numbers
- Mobile phone numbers
- International coverage
- Validation included
-
Lusha
- B2B phone numbers
- Real-time verification
- Mobile and direct lines
- GDPR compliant
-
RocketReach
- Executive contacts
- Verified phone numbers
- Multi-source verification
- High accuracy
More Phone Providers
- ZoomInfo: Enterprise contact database
- SignalHire: Professional contact finder
- Public Records: Validated public sources
Validation Services
All enriched data passes through validation providers:
Email Validation
- NeverBounce: Real-time email verification
- ZeroBounce: Email validation and scoring
- EmailListVerify: Deliverability checks
Phone Validation
- Twilio Lookup: Phone number validation
- NumVerify: Number verification API
- Carrier Lookup Services: Line type and carrier info
How Providers Are Used
Waterfall Sequence
For each enrichment request, our system:
- Checks Cache First: Previously validated results from any provider
- Primary Providers: Tries 2-3 primary providers in parallel
- Secondary Providers: Falls back to alternatives if needed
- Validation: All results validated before delivery
- Best Result: Returns the highest confidence match
Provider Selection Logic
The system intelligently selects providers based on:
-
Geography: Different providers excel in different regions
- North America: Hunter, Apollo, Lusha
- Europe: Snov.io, ContactOut (GDPR compliant)
- Asia-Pacific: RocketReach, Proxycurl
-
Company Size:
- Enterprise (1000+ employees): ZoomInfo, Apollo
- Mid-Market (100-999): Hunter, RocketReach
- SMB (<100): Snov.io, ContactOut
-
Industry:
- Technology: Apollo, Hunter, Clearbit
- Healthcare: Specialized compliance-aware providers
- Financial Services: Verified, compliant sources
Data Quality Standards
Accuracy Metrics
We track accuracy for each provider:
| Provider Type | Accuracy Rate | Coverage |
|---|---|---|
| Email Primary | 92-97% | 70-80% |
| Email Secondary | 85-92% | 20-30% |
| Phone Primary | 88-94% | 45-55% |
| Phone Secondary | 80-88% | 15-25% |
| LinkedIn Data | 95-99% | 90%+ |
Validation Process
Every data point goes through:
- Format Validation: Correct format for the data type
- Source Verification: Multiple sources confirm the same data
- Freshness Check: Recently validated (within 90 days)
- Deliverability Test: For emails and phones
- Duplicate Detection: Remove duplicate or conflicting data
Compliance & Privacy
Data Protection
All our providers are:
- âś… GDPR Compliant: European data protection standards
- âś… CCPA Compliant: California privacy requirements
- âś… SOC 2 Certified: Security and privacy controls
- âś… Privacy Shield Certified: EU-US data transfers (where applicable)
Data Sources
Our providers collect data from:
- Public business registrations
- Publicly available LinkedIn profiles
- Company websites and directories
- Opt-in databases
- Verified business contacts
- Public records (where legally permitted)
Opt-Out Policies
We respect privacy requests:
- All providers honor opt-out requests
- Data removed from our cache within 30 days
- Enterprise opt-out management available
- Compliance with do-not-contact lists
Regional Coverage
North America
- Email: 80-85% coverage
- Phone: 55-65% coverage
- Best Providers: Hunter, Apollo, Lusha, ZoomInfo
Europe
- Email: 70-75% coverage (GDPR-compliant sources)
- Phone: 40-50% coverage
- Best Providers: Snov.io, ContactOut, Clearbit
Asia-Pacific
- Email: 60-70% coverage
- Phone: 35-45% coverage
- Best Providers: RocketReach, Proxycurl, SignalHire
Latin America
- Email: 55-65% coverage
- Phone: 30-40% coverage
- Best Providers: Hunter, ContactOut
Africa & Middle East
- Email: 50-60% coverage
- Phone: 25-35% coverage
- Best Providers: RocketReach, Apollo
Provider Performance Monitoring
We continuously monitor provider performance:
- Success Rates: Tracked per provider, geography, and industry
- Response Times: Average time to return results
- Data Freshness: How recently data was updated
- Accuracy Scores: Based on validation and user feedback
- Cost Efficiency: Success per dollar spent
Automatic Optimization
Our system automatically:
- Routes requests to best-performing providers
- Adjusts waterfall order based on success rates
- Disables underperforming providers temporarily
- Tests new providers in production
- Optimizes for speed and accuracy
FAQ
Why multiple providers?
Using multiple providers in a waterfall approach increases match rates by 40-60% compared to single providers, while maintaining cost efficiency.
Do I pay for each provider attempted?
No! You only pay once per successful enrichment, regardless of how many providers we query in the waterfall.
Can I choose specific providers?
The system automatically selects optimal providers. Enterprise customers can request custom provider configurations.
How often is provider data updated?
Provider data freshness varies:
- Real-time APIs: Updated immediately
- Cached data: Refreshed every 30-90 days
- Validation: Performed on every request
What if a provider is down?
Our system automatically skips unavailable providers and uses alternatives. You won't notice any difference in service.