FEATURE
CLEAROUT
COGNISM
OVERALL_SCORE
26/50
25/50
API_QUALITY
EXCELLENT ████
GOOD ███░
API_SCORE
8/10
7/10
GTM_RELEVANCE
18/20
18/20
CATEGORY
DATA ENRICHMENT & INTENT
CRM & SALES
PRICING
FREEMIUM
PAID
FREE_TIER
[YES]
[---]
REST_API
[YES]
[YES]
WEBHOOKS
[YES]
[YES]
GRAPHQL
[---]
[---]
OAUTH
[---]
[---]
COMPLEXITY
EASY
MEDIUM
LEARNING
EASY
MEDIUM
WEBHOOK_REL
GOOD
GOOD
// VERDICT
OVERALL_SCORE:CLEAROUT
API_QUALITY:CLEAROUT
GTM_RELEVANCE:TIE
EASE_OF_USE:CLEAROUT
VALUE (FREE):CLEAROUT
Strengths & Weaknesses
Clearout
99% email validation accuracy with AI-powered deliverability verdicts to protect sender reputation
Form Guard provides real-time validation at point of capture, blocking disposable emails, invalid phones, and gibberish names
LinkedIn Chrome Extension enables rapid B2B prospecting with email discovery and data enrichment (phone, job title, location)
Comprehensive API with multiple validation endpoints, bulk processing, and reverse lookup capabilities
Limited GraphQL support for modern API architectures
API authentication relies on API keys rather than OAuth for more granular access control
Pricing details not fully transparent on website, requires contact for enterprise plans
Cognism
Diamond Data phone-verified contacts deliver leading mobile number accuracy in EMEA
Strong GDPR and CCPA compliance with DNC list checking built in
Real-time API enrichment and batch data delivery to CRMs and data warehouses
Expensive entry point — minimum $15K/year plus per-user costs
North American data less comprehensive than European market strength