1Lookup

Clearbit

Clearbit Enriches Data.1Lookup Validates Precisely.

Tired of Clearbit's $200+ monthly pricing for basic validation? 1Lookup delivers superior accuracy at 85% lower cost. As the leading Clearbit alternative, we specialize in validation-first architecture with Enterprise-grade accuracy, fraud detection, and transparent pricing that won't break your budget.

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Built for Different Purposes

Understanding the fundamental difference between enrichment platforms and validation specialists

Clearbit: Enrichment Platform

Clearbit builds comprehensive company and person profiles by aggregating data from multiple sources. Email validation is a complementary feature to support their enrichment services.

Primary focus: Data enrichment

Best for: Sales and marketing teams

Validation: Basic feature

Pricing: Credit-based system

1Lookup: Validation Specialist

1Lookup is built from the ground up for data validation with enterprise-grade accuracy, fraud detection, and real-time verification across phone, email, and IP addresses.

Primary focus: Data validation

Best for: Technical teams

Validation: Core expertise

Pricing: Per-validation

Why teams choose 1Lookup

Verified reviews from real 1Lookup users.

Rated 5 out of 5 on Trustpilot

Good tool, no fluff
Been using 1Lookup for a couple months now. We verify leads before pushing them into Pipedrive. Honestly it just works. Not fancy, not buggy, and the support actually answers when you write them. Can't really ask for more.
Brian Letzter
United States · October 2025
The most practical data tool I've used
I've seen hundreds of validation APIs come and go. 1Lookup stands out because they don't oversell. Their data is solid, support is honest, and they're transparent about limitations, which is rare in this industry. I've replaced three tools with this one. They listen, they iterate, and they keep improving. You can feel there are actual engineers behind it, not just salespeople.
Bùi Thị Thanh Ngọc
Vietnam · October 2025
Solid phone validation API
We use 1Lookup inside our telemarketing app to verify numbers before they go to the dialer. Setup was simple and the results have been consistent. It's not overloaded with features, just fast, accurate, and reliable. Docs could be a bit deeper, but honestly, it works out of the box.
Dirk van Meer
United States · December 2025
Saved us from hundreds of spam signups
We run a SaaS product with free trials and were getting flooded with bots and fake users. After integrating 1Lookup, the difference was night and day. It quietly filters out junk signups without blocking legitimate customers. The support team even helped us fine-tune our risk thresholds on a quick Zoom call. Being honest, we couldn't ask for more.
Ido Shacham
United States · January 2026
A good addition to our workflow
1Lookup has been a good addition to our workflow over the last few months. We use it to verify IPs, emails, and phone numbers, which has noticeably cut down the time we spend chasing dead-end applications. It's reasonably priced and their support team is actually helpful. It's a very practical tool for what we need.
Meredith Jr. Redmond
Israel · March 2026

Feature Comparison

How validation specialists compare to enrichment platforms

Feature	1Lookup	Clearbit	Winner
Email Validation Accuracy Specialized validation vs. enrichment feature	Enterprise deliverability accuracy	94% typical accuracy	1Lookup
Validation Speed Optimized for validation vs. data enrichment	120ms real-time validation	300ms+ enrichment focus	1Lookup
Service Focus Validation specialist vs. enrichment generalist	Specialized validation platform	Data enrichment platform	Different
Fraud Detection Security-focused vs. enrichment-focused	Advanced fraud scoring	Basic email verification	1Lookup
Pricing Model Transparent validation pricing vs. credit systems	Simple per-validation pricing	Complex enrichment credits	1Lookup
API Complexity Focused API vs. multi-service platform	Simple validation API	Complex enrichment platform	1Lookup
Getting Started Quick validation vs. full platform onboarding	Instant validation access	Platform setup required	1Lookup
Data Breadth Depth vs. breadth in data approach	Deep validation intelligence	Broad enrichment data	Different

Security & Fraud Prevention

Stop Fraud Before It Starts With Intelligence Clearbit Can't Match

Basic email verification without fraud intelligence 1Lookup goes deeper with advanced fraud detection that analyzes patterns, identifies suspicious numbers, and provides real-time risk scoring. Protect your business from SMS fraud, account takeovers, and fake registrations with intelligence that learns and adapts.

Real-time Risk Scoring

Instant fraud probability assessment for every number

Pattern Recognition

Detect suspicious behavior patterns across millions of numbers

Adaptive Learning

AI that improves fraud detection accuracy over time

Fraud Risk Score

LOW RISK

Spam Indicator:45%

VOIP Detection:Yes

Recent Reports:3

Confidence:91%

Global Response Times

🇺🇸 US East

160ms

🇪🇺 EU West

200ms

🌏 Asia Pacific

260ms

🌍 Global Avg

210ms

Average: 156ms

vs Clearbit's 350ms (enrichment focus)

Performance & Speed

Deliver Results Faster Than Clearbit's Sluggish API

Speed matters when users are waiting. 1Lookup's globally distributed edge network delivers validation results in under 200ms worldwide, while Clearbit's infrastructure struggles with 350ms (enrichment focus) response times. Our optimized algorithms and strategic caching ensure your users never wait, improving conversion rates and user experience.

Edge Computing Network

15 global data centers for minimal latency

Intelligent Routing

Automatic routing to nearest available server

Enterprise-Grade Uptime

High availability with automatic failover

Data Intelligence

Get Complete Intelligence, Not Just Clearbit's Limited Data

Enrichment-focused with basic validation 1Lookup provides a complete intelligence profile: HLR data, subscriber status, porting history, network type, roaming information, and more. Make informed decisions with data that actually helps your business understand and verify your users.

HLR Lookup Data

Subscriber Status

Network Intelligence

Roaming Detection

Porting History

Line Type Detection

Regional Coverage

Timezone Data

Complete Phone Profile

Carrier:T-Mobile USA

Line Type:Mobile

HLR Status:Active

Roaming:Not roaming

Ported:No

Network:LTE

Timezone:Pacific

Country:United States

Simple Migration from Clearbit

// Before (Clearbit)

// Clearbit - Enrichment focus const response = await fetch( 'https://person.clearbit.com/v2/people/find?email=person@example.com', { headers: { 'Authorization': 'Bearer YOUR_KEY' } } ); const data = await response.json(); // Rich person data, basic email verification

// After (1Lookup)

// 1Lookup - Validation focus const response = await fetch('https://api.1lookup.io/v1/validate/email', { method: 'POST', headers: { 'Authorization': 'Bearer YOUR_API_KEY', 'Content-Type': 'application/json' }, body: JSON.stringify({ email: 'person@example.com' }) }); const data = await response.json(); console.log({ valid: data.valid, deliverable: data.deliverable, fraud_score: data.fraud_score, mx_valid: data.mx_valid, smtp_valid: data.smtp_valid, disposable: data.disposable });

Specialized in validation accuracy

Advanced fraud detection

Real-time SMTP verification

Focused API for validation use cases

Developer Experience

Migrate in Minutes With Better Docs and Support Than Clearbit

Switch from Clearbit's complex implementation to 1Lookup's clean REST API in one line of code. Our documentation is clearer, our examples work out of the box, and our support team actually responds. Plus, no rate limits means you can scale without throttling headaches.

No Rate Limits

Scale to millions of requests without throttling

24/7 Support

Real humans, not chatbots, when you need help

Clear Documentation

Examples that work, guides that make sense

Pricing & Scale

Save Significantly on Validation Without Sacrificing Quality

Enrichment platform with validation as add-on feature 1Lookup offers transparent, predictable pricing that scales with your business. No surprise charges, no commitment requirements, no rate limit fees. Just better validation at a fraction of the cost.

Significant Cost Savings

$0.005 vs Clearbit's higher pricing

No Hidden Fees

What you see is what you pay—no surprises

Volume Discounts

Save even more as you scale up

Monthly Cost Comparison

10K validations

$30/month$200/month

Save $170

100K validations

$150/month$1,500/month

Save $1,350

1M validations

$800/month$12,000/month

Save $11,200

Significant savings across all tiers

The Smart Clearbit Alternative

Why pay Clearbit's premium pricing for basic validation? Join thousands who switched to 1Lookup for superior accuracy, 85% cost savings, and validation-first architecture.

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