Introduction
A comprehensive side-by-side comparison of BillionVerify and Clearout features, pricing, accuracy, and performance to help you choose the right email verification service for your business.
Core Verification Features
| Feature | BillionVerify | Clearout |
|---|---|---|
| Syntax Validation | RFC 5322 compliant with support for international domains (IDN) and special characters | RFC compliant with basic syntax checking |
| Domain Validation | Real-time DNS lookup with caching for optimal performance | Standard DNS verification |
| MX Record Checking | Deep MX record analysis including priority checking and backup MX identification | Standard MX record verification |
| SMTP Verification | Multi-threaded SMTP connection with intelligent retry logic and greylisting detection | Standard SMTP verification with retry logic |
| Accuracy Rate | 99.9% | 99.5% |
| Processing Speed | 50K emails/hour | 45K emails/hour |
| API Response Time | <300ms average | <400ms average |
Advanced Detection Capabilities
| Detection Type | BillionVerify | Clearout |
|---|---|---|
| Disposable Email Detection | AI-powered detection with 50,000+ domains database, real-time ML updates, catches 40% more than traditional methods | Standard disposable email database with periodic updates |
| Catch-All Domain Detection | Real-time testing with multiple addresses, pattern recognition, risk scoring, 95% accuracy | Basic catch-all detection with limited testing |
| Role-Based Email Detection | Detailed categorization: Generic (info@, contact@), Support (support@, help@), Admin (admin@, webmaster@), Sales (sales@, business@) | Standard role-based detection |
| Spam Trap Detection | 1M+ identified spam traps, real-time updates from global infrastructure, ML prediction, ISP partnerships | Standard spam trap database |
Pricing Comparison
| Plan | Volume | BillionVerify | Clearout | Savings |
|---|---|---|---|---|
| Starter | 10,000 emails | $0.0006/email ($6 total) | $0.0007/email ($7 total) | $1 (14.3%) |
| Growth | 100,000 emails | $0.0005/email ($50 total) | $0.0006/email ($60 total) | $10 (16.7%) |
| Business | 500,000 emails | $0.0004/email ($200 total) | $0.0005/email ($250 total) | $50 (20%) |
| Enterprise | Custom | Custom pricing | Custom pricing | Contact sales |
Key Takeaway: BillionVerify saves you 15-20% on average compared to Clearout. View our complete pricing details for more information.
API Performance & Infrastructure
Our email validation API delivers superior performance across all metrics:
| Metric | BillionVerify | Clearout |
|---|---|---|
| Average Response Time | <300ms | <400ms |
| Uptime SLA | 99.99% | 99.9% |
| Infrastructure | Global CDN (15+ regions) | Multi-region |
| Rate Limit | 100 requests/second | 60 requests/second |
| Webhook Support | Full async processing | Basic webhook support |
| API Documentation | Comprehensive with interactive examples | Good documentation with examples |
| Code Libraries | JavaScript, Python, PHP, Ruby, Go, Java | JavaScript, Python, PHP, Ruby |
Integration Ecosystem
| Category | BillionVerify (25+ integrations) | Clearout (20+ integrations) |
|---|---|---|
| Email Marketing | Mailchimp, SendGrid, HubSpot, ActiveCampaign, Klaviyo, ConvertKit, GetResponse | Mailchimp, SendGrid, HubSpot, ActiveCampaign, Klaviyo |
| CRM | Salesforce, Pipedrive, Zoho CRM | Salesforce, Zoho CRM |
| Automation | Zapier, Make (Integromat), n8n | Zapier, Make (Integromat) |
| E-commerce | Shopify, WooCommerce, Magento | Shopify, WooCommerce |
| Other | WordPress plugins, custom integrations | API access, basic integrations |
Feature Comparison
| Feature | BillionVerify | Clearout |
|---|---|---|
| Customer Support | 24/7 live support | Business hours (9AM-6PM EST) |
| Credit Expiration | Never expires | 12 months |
| Free Trial | 10 credits daily (ongoing) | 100 credits (one-time) |
| Duplicate Removal | Automatic | Automatic |
| List Monitoring | Real-time | Real-time |
| Bulk Upload Formats | CSV, Excel, TXT, JSON | CSV, Excel, TXT |
| Custom Integrations | Available | Available |
| SLA Guarantee | ✅ Yes | ❌ No |
Pros and Cons
| Feature/Aspect | BillionVerify | Clearout |
|---|---|---|
| Accuracy Rate | ✅ 99.9% (higher) | ❌ 99.5% (lower) |
| Processing Speed | ✅ 11% faster | ❌ Slower |
| Pricing | ✅ 15-20% more cost-effective | ❌ 15-20% more expensive |
| Customer Support | ✅ 24/7 availability | ❌ Business hours only |
| Credit Expiration | ✅ Never expires | ❌ Expires after 12 months |
| Native Integrations | ✅ 25+ integrations | ✅ 20+ integrations (good) |
| AI Detection | ✅ Advanced AI-powered | ❌ Standard detection |
| List Monitoring | ✅ Real-time monitoring | ✅ Real-time monitoring |
| Duplicate Removal | ✅ Automatic | ✅ Automatic |
| Free Trial | ✅ 10 credits daily (ongoing) | ❌ 100 credits (one-time only) |
| Infrastructure | ✅ Global CDN (15+ regions) | ✅ Multi-region (fewer regions) |
| Brand Reputation | ❌ Newer brand | ✅ Established brand |
| User Community | ❌ Smaller community | ✅ Active community |
| Documentation | ✅ Comprehensive | ✅ Good documentation |
| API Performance | ✅ <300ms response time | ✅ <400ms response time (good) |
| Email Finding Tools | ❌ Not available | ✅ Email finder and prospecting tools |
| Chrome Extension | ❌ Not available | ✅ Available |
Migration Guide
Migrating from Clearout to BillionVerify
Switching from Clearout to BillionVerify is simple and can be completed in under 30 minutes:
| Step | Task | Time | Details |
|---|---|---|---|
| 1 | Sign Up | 2 min | Create free account at billionverify.com - no credit card required |
| 2 | Get API Key | 1 min | Navigate to API Settings → Generate New API Key → Copy securely |
| 3 | Update Endpoints | 10 min | Replace Clearout API endpoints with BillionVerify (see code examples below) |
| 4 | Test Integration | 10 min | Use 10 free daily credits to thoroughly test your integration |
| 5 | Import Lists | 5 min | Upload existing email lists (supports CSV, Excel, TXT) |
| 6 | Configure Integrations | 5 min | Set up marketing platform integrations |
API Migration Example:
Before (Clearout):
// Clearout API call
fetch('https://api.clearout.io/v2/email_verify/instant', {
method: 'POST',
headers: {
'Authorization': 'Bearer your_clearout_token'
},
body: JSON.stringify({
email: 'test@example.com'
})
})
After (BillionVerify):
// BillionVerify API call
fetch('https://api.billionverify.com/v1/verify', {
method: 'POST',
headers: {
'X-API-Key': 'your_billionverify_key'
},
body: JSON.stringify({
email: 'test@example.com'
})
})
Migration Support
Our team is here to help with your migration:
- ✅ Free migration consultation
- ✅ API integration assistance
- ✅ Bulk verification of existing lists
- ✅ Custom integration development
Customer Reviews
What Customers Say
David Martinez, Growth Manager at SaaS Ventures ⭐⭐⭐⭐⭐ (5/5) "We switched from Clearout to BillionVerify and saw immediate improvements. Our bounce rate dropped from 1.8% to 0.4%. The 24/7 support has been invaluable for our international campaigns, and the faster API response times make a real difference when processing large lists."
Jennifer Lee, Email Marketing Director at DigitalGrowth Co. ⭐⭐⭐⭐⭐ (5/5) "The API response time is noticeably faster than Clearout. We process 300K emails daily across multiple campaigns, and BillionVerify's speed and reliability have been exceptional. The cost savings of 18% allowed us to reinvest in more marketing initiatives."
Robert Thompson, CTO at TechScale Solutions ⭐⭐⭐⭐⭐ (5/5) "BillionVerify's advanced disposable email detection caught 35% more temporary emails than Clearout. This has significantly improved our lead quality and reduced fraud. The non-expiring credits are a huge plus for our fluctuating verification needs."
Trustpilot Ratings
| Service | Rating | Reviews | Status |
|---|---|---|---|
| BillionVerify | 4.9/5 | 2,450+ | Excellent |
| Clearout | 4.6/5 | 1,200+ | Great |
Which Service Is Right for You?
Choose BillionVerify If:
| Scenario | Why BillionVerify |
|---|---|
| You Need Maximum Accuracy | 99.9% accuracy provides the reliability you need for critical deliverability |
| You Process High Volumes | 11% faster processing speeds and better volume discounts ideal for bulk email verification needs (100K+ emails/month) |
| You Want Better Value | Save 15-20% compared to Clearout while getting superior features |
| You Need 24/7 Support | Round-the-clock customer support ensures you're never blocked by issues |
| You Value Flexibility | Non-expiring credits and daily free testing credits provide maximum flexibility |
| You're Global | Global CDN infrastructure (15+ regions) ensures fast performance worldwide |
| You Need Faster API | <300ms average response time for real-time verification scenarios |
Choose Clearout If:
| Scenario | Why Clearout |
|---|---|
| You Prefer Established Brands | Brand recognition and track record are important to you |
| You Need Email Finding Tools | Built-in email finder and prospecting features are valuable for your workflow |
| You Want Chrome Extension | Browser extension for quick email verification while browsing |
| You Have Low Volume Needs | For very small email lists (under 5,000), pricing difference may be minimal |
| You Want Larger One-Time Trial | 100 one-time trial credits vs. BillionVerify's 10 daily credits |
Frequently Asked Questions
Can I use both services simultaneously during migration?
Yes, absolutely. Many customers run both services in parallel for a testing period to compare results before fully switching to BillionVerify. This helps ensure a smooth transition without disrupting your existing workflows.
How does BillionVerify achieve higher accuracy than Clearout?
BillionVerify uses advanced AI algorithms combined with real-time SMTP verification and a proprietary spam trap database. Our multi-layer verification process includes machine learning pattern recognition that adapts to new email patterns faster than traditional methods. We also maintain partnerships with major ISPs for real-time spam trap updates.
Will my existing Clearout integrations work with BillionVerify?
Most platforms that integrate with Clearout also support BillionVerify. We offer native integrations with 25+ platforms including Mailchimp, HubSpot, SendGrid, and more. Our support team can help with any custom integrations or migration questions.
What happens to my Clearout credits when I switch?
Clearout credits remain in your Clearout account. We recommend using them up before fully migrating. BillionVerify offers competitive pricing that will save you money on future purchases, and our credits never expire.
How long does API migration typically take?
Most customers complete API migration in under 30 minutes. The API structure is straightforward, and we provide detailed migration guides and code examples for all major programming languages. Our support team is available 24/7 to assist.
Do you offer bulk migration discounts?
Yes! Contact our sales team for special migration offers. We often provide bonus credits or discounted rates for customers switching from competitors like Clearout.
Is there a minimum commitment or contract?
No, BillionVerify offers pay-as-you-go pricing with no long-term contracts. Credits never expire, giving you complete flexibility to scale up or down based on your needs.
Can I export my verified lists from Clearout and import them to BillionVerify?
Yes, you can export your verified lists from Clearout and upload them to BillionVerify for re-verification or storage. We support all major file formats (CSV, Excel, TXT, JSON).
Does BillionVerify offer email finding tools like Clearout?
Currently, BillionVerify focuses exclusively on email verification and validation to provide the highest accuracy and performance. We integrate seamlessly with popular email finding tools and prospecting platforms.
How does the free trial compare between the two services?
Clearout offers 100 one-time credits, while BillionVerify provides 10 credits daily on an ongoing basis. This means you can continuously test and verify emails over time without requesting additional trial credits.
Conclusion
| Metric | BillionVerify | Clearout | Winner |
|---|---|---|---|
| Accuracy | 99.9% | 99.5% | ✅ BillionVerify |
| Speed | 50K/hour | 45K/hour | ✅ BillionVerify |
| Pricing | $0.0006/email | $0.0007/email | ✅ BillionVerify (17% cheaper) |
| Support | 24/7 | Business hours | ✅ BillionVerify |
| Infrastructure | Global CDN (15+ regions) | Multi-region | ✅ BillionVerify |
| Integrations | 25+ | 20+ | ✅ BillionVerify |
| Credit Expiration | Never | 12 months | ✅ BillionVerify |
| API Response Time | <300ms | <400ms | ✅ BillionVerify |
Verdict: BillionVerify provides superior accuracy, faster processing speeds, better value (15-20% cost savings), and more features. With 24/7 support, non-expiring credits, and advanced AI-powered detection, BillionVerify is the ideal choice for businesses serious about email deliverability and verification accuracy.
Ready to make the switch? Start your free trial today with 10 free credits daily - no credit card required.