Introduction
A comprehensive side-by-side comparison of BillionVerify and ZeroBounce features, pricing, accuracy, and performance to help you choose the right email verification service for your business.
Core Verification Features
| Feature | BillionVerify | ZeroBounce |
|---|---|---|
| Syntax Validation | RFC 5322 compliant with support for international domains (IDN) and special characters | RFC 5322 compliant with standard validation |
| Domain Validation | Real-time DNS lookup with caching for optimal performance | DNS verification with MX record checks |
| MX Record Checking | Deep MX record analysis including priority checking and backup MX identification | Standard MX record validation |
| SMTP Verification | Multi-threaded SMTP connection with intelligent retry logic and greylisting detection | SMTP handshake verification |
| Accuracy Rate | 99.9% | 99% |
| Processing Speed | 50K emails/hour | 30K emails/hour |
| API Response Time | <300ms average | <600ms average |
Advanced Detection Capabilities
| Detection Type | BillionVerify | ZeroBounce |
|---|---|---|
| Disposable Email Detection | AI-powered detection with 50,000+ domains database, real-time ML updates, catches 40% more than traditional methods | Database of disposable domains updated regularly, manual updates |
| Catch-All Domain Detection | Real-time testing with multiple addresses, pattern recognition, risk scoring, 95% accuracy | Basic catch-all server detection with accept-all flagging |
| Role-Based Email Detection | Detailed categorization: Generic (info@, contact@), Support (support@, help@), Admin (admin@, webmaster@), Sales (sales@, business@) | Standard role-based account detection with common patterns |
| Spam Trap Detection | 1M+ identified spam traps, real-time updates from global infrastructure, ML prediction, ISP partnerships | Proprietary spam trap database updated quarterly |
| Abuse Email Detection | Identifies complaint and abuse addresses | ✅ Identifies abuse@ addresses |
| Email Activity Score | ❌ Not available | ✅ Activity scoring system (0-10 scale) |
Pricing Comparison
| Plan | Volume | BillionVerify | ZeroBounce | Savings |
|---|---|---|---|---|
| Starter | 10,000 emails | $0.0006/email ($6 total) | $0.0008/email ($8 total) | $2 (25%) |
| Growth | 100,000 emails | $0.0005/email ($50 total) | $0.0007/email ($70 total) | $20 (28.5%) |
| Business | 500,000 emails | $0.0004/email ($200 total) | $0.0006/email ($300 total) | $100 (33%) |
| Enterprise | Custom | Custom pricing | Custom pricing | Contact sales |
Key Takeaway: BillionVerify saves you 25-33% on average compared to ZeroBounce. View our complete pricing details for more information.
API Performance & Infrastructure
Our email validation API delivers superior performance across all metrics:
| Metric | BillionVerify | ZeroBounce |
|---|---|---|
| Average Response Time | <300ms | <600ms |
| Uptime SLA | 99.99% | 99.9% |
| Infrastructure | Global CDN (15+ regions) | Multi-region infrastructure |
| Rate Limit | 100 requests/second | 50 requests/second |
| Webhook Support | Full async processing with customizable callbacks | Webhook support available |
| API Documentation | Comprehensive with interactive examples and SDKs | Detailed API documentation |
| Code Libraries | JavaScript, Python, PHP, Ruby, Go, Java | JavaScript, Python, PHP, Ruby, .NET |
Integration Ecosystem
| Category | BillionVerify (25+ integrations) | ZeroBounce (20+ integrations) |
|---|---|---|
| Email Marketing | Mailchimp, SendGrid, HubSpot, ActiveCampaign, Klaviyo, ConvertKit, GetResponse | Mailchimp, HubSpot, ActiveCampaign, Klaviyo, Constant Contact |
| CRM | Salesforce, Pipedrive, Zoho CRM | Salesforce, HubSpot CRM |
| Automation | Zapier, Make (Integromat), n8n | Zapier (5,000+ app connections) |
| E-commerce | Shopify, WooCommerce, Magento | Shopify, WooCommerce |
| Other | WordPress plugins, custom integrations | WordPress plugin, Google Sheets |
Feature Comparison
| Feature | BillionVerify | ZeroBounce |
|---|---|---|
| Customer Support | 24/7 live support | Business hours support (Mon-Fri) |
| Credit Expiration | Never expires | 12 months |
| Free Trial | 10 credits daily (ongoing) | 100 credits (one-time) |
| Duplicate Removal | Automatic | Automatic (included) |
| List Monitoring | Real-time | Not available |
| Bulk Upload Formats | CSV, Excel, TXT, JSON | CSV, Excel, TXT |
| Custom Integrations | Available | API available for custom integrations |
| SLA Guarantee | ✅ Yes | ❌ No formal SLA |
| IP Geolocation | ❌ Not available | ✅ Shows email server location |
| Email Finder Tool | ❌ Not available | ✅ Email address discovery |
Pros and Cons
| Feature/Aspect | BillionVerify | ZeroBounce |
|---|---|---|
| Accuracy Rate | ✅ 99.9% (highest in industry) | ✅ 99% (excellent) |
| Processing Speed | ✅ 66% faster (50K vs 30K/hour) | ❌ Slower processing |
| API Response Time | ✅ 50% faster (<300ms vs <600ms) | ❌ Slower response |
| Pricing | ✅ 25-33% more cost-effective | ❌ 25-33% more expensive |
| Customer Support | ✅ 24/7 availability | ❌ Business hours only |
| Credit Expiration | ✅ Never expires | ❌ Expires after 12 months |
| Rate Limit | ✅ 100 req/s (2x higher) | ❌ 50 req/s |
| Free Trial | ✅ 10 credits daily (ongoing) | ✅ 100 credits (one-time, larger) |
| Infrastructure | ✅ Global CDN (15+ regions) | ✅ Multi-region setup |
| Activity Scoring | ❌ Not available | ✅ Email activity score (0-10) |
| IP Geolocation | ❌ Not available | ✅ Server location data |
| Email Finder | ❌ Not available | ✅ Email discovery tool |
| Brand Recognition | ❌ Newer brand (2023) | ✅ Established since 2015 |
| User Reviews | ✅ 4.9/5 rating | ✅ 4.7/5 rating |
| Documentation | ✅ Comprehensive with examples | ✅ Well-documented |
Migration Guide
Migrating from ZeroBounce to BillionVerify
Switching from ZeroBounce 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 ZeroBounce 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 (ZeroBounce):
// ZeroBounce API call
fetch('https://api.zerobounce.net/v2/validate', {
method: 'GET',
params: {
api_key: 'your_zerobounce_key',
email: 'test@example.com',
ip_address: '' // optional
}
})
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, Marketing Director at CloudScale Systems ⭐⭐⭐⭐⭐ (5/5) "We switched from ZeroBounce to BillionVerify primarily for the speed improvement. Processing our daily lists went from 3 hours to under 2 hours. The cost savings of 30% was an excellent bonus, and the 24/7 support has been invaluable for our global team."
Jennifer Lee, Founder at StartupBoost ⭐⭐⭐⭐⭐ (5/5) "BillionVerify's API response time is noticeably faster than ZeroBounce. For real-time validation on our signup forms, that makes a huge difference in user experience. Our form abandonment rate dropped by 15% after switching."
Robert Thompson, Email Marketing Manager at TechVenture Inc. ⭐⭐⭐⭐⭐ (5/5) "The advanced disposable email detection caught 35% more temporary emails than ZeroBounce did. Combined with the non-expiring credits, BillionVerify provides better value for our seasonal campaigns. We can verify lists when we need them without worrying about credit expiration."
Trustpilot Ratings
| Service | Rating | Reviews | Status |
|---|---|---|---|
| BillionVerify | 4.9/5 | 2,450+ | Excellent |
| ZeroBounce | 4.7/5 | 3,200+ | Excellent |
Which Service Is Right for You?
Choose BillionVerify If:
| Scenario | Why BillionVerify |
|---|---|
| You Need Maximum Speed | 66% faster processing (50K vs 30K emails/hour) and 50% faster API response times critical for high-volume operations |
| You Process High Volumes | Better volume discounts and faster speeds make BillionVerify ideal for bulk email verification needs (100K+ emails/month) |
| You Want Better Value | Save 25-33% compared to ZeroBounce while getting superior performance and accuracy |
| You Need 24/7 Support | Round-the-clock customer support ensures your global team is never blocked by issues |
| You Value Flexibility | Non-expiring credits provide maximum flexibility for seasonal campaigns and irregular verification schedules |
| Real-Time Validation is Critical | <300ms API response time ensures seamless user experience on signup forms |
Choose ZeroBounce If:
| Scenario | Why ZeroBounce |
|---|---|
| You Want Activity Scoring | Email activity score (0-10) helps prioritize engaged subscribers |
| You Need IP Geolocation | Server location data useful for fraud detection and targeting |
| You Want Email Discovery | Built-in email finder tool for prospecting |
| You Prefer Established Brands | 10-year track record (since 2015) and larger user community |
| One-Time Trial is Sufficient | 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 and allows you to verify the accuracy improvements firsthand.
How does BillionVerify achieve higher accuracy than ZeroBounce?
BillionVerify uses advanced AI algorithms combined with real-time SMTP verification and a proprietary spam trap database with over 1 million identified traps. Our multi-layer verification process includes machine learning pattern recognition that adapts to new email patterns faster than traditional database-driven methods. We also perform multi-point SMTP verification with intelligent retry logic that handles greylisting better.
Will my existing ZeroBounce integrations work with BillionVerify?
Most platforms that integrate with ZeroBounce also support BillionVerify. We offer native integrations with 25+ platforms including Mailchimp, HubSpot, SendGrid, ActiveCampaign, and more. For custom integrations built on ZeroBounce's API, the migration is straightforward as both services use RESTful APIs. Our support team can help with any custom integrations.
What happens to my ZeroBounce credits when I switch?
ZeroBounce credits remain in your ZeroBounce account and will expire after 12 months unless used. We recommend using them up before fully migrating. BillionVerify offers competitive pricing with credits that never expire, eliminating the pressure to use them within a time limit.
How long does API migration typically take?
Most customers complete API migration in under 30 minutes. The API structure is similar to ZeroBounce's RESTful approach, and we provide detailed migration guides with code examples in all major programming languages. Our support team is available 24/7 to assist with any questions.
Do you offer bulk migration discounts?
Yes! Contact our sales team for special migration offers. We frequently provide bonus credits or discounted rates for customers switching from competitors like ZeroBounce. We also offer free bulk verification of your existing lists to help you test our service.
Is there a minimum commitment or contract?
No, BillionVerify offers pay-as-you-go pricing with no long-term contracts or commitments. Credits never expire, giving you complete flexibility to use them whenever needed. This is particularly valuable for businesses with seasonal campaigns or irregular verification needs.
Can I export my verified lists from ZeroBounce and import them to BillionVerify?
Yes, you can export your verified lists from ZeroBounce and upload them to BillionVerify for re-verification or storage. We support all major file formats (CSV, Excel, TXT, JSON). However, we recommend re-verifying lists that are older than 30 days, as email validity can change over time.
Does BillionVerify offer activity scoring like ZeroBounce?
Currently, BillionVerify focuses on core verification accuracy and speed rather than activity scoring. However, our advanced spam trap detection and engagement risk scoring provide similar insights into email quality. We're continuously adding features based on customer feedback.
What about IP geolocation data?
BillionVerify currently focuses on email verification accuracy and performance. While we don't offer IP geolocation as a separate feature, our spam trap detection and risk scoring provide comprehensive email quality assessment. If geolocation is critical for your use case, we're happy to discuss custom solutions.
Conclusion
| Metric | BillionVerify | ZeroBounce | Winner |
|---|---|---|---|
| Accuracy | 99.9% | 99% | ✅ BillionVerify |
| Speed | 50K/hour | 30K/hour | ✅ BillionVerify (66% faster) |
| API Response | <300ms | <600ms | ✅ BillionVerify (50% faster) |
| Pricing | $0.0006/email | $0.0008/email | ✅ BillionVerify (25-33% cheaper) |
| Support | 24/7 | Business hours | ✅ BillionVerify |
| Infrastructure | Global CDN | Multi-region | ✅ BillionVerify |
| Credit Expiration | Never | 12 months | ✅ BillionVerify |
| Activity Scoring | ❌ | ✅ | ✅ ZeroBounce |
| IP Geolocation | ❌ | ✅ | ✅ ZeroBounce |
| Brand Maturity | Newer (2023) | Established (2015) | ✅ ZeroBounce |
Verdict: BillionVerify provides superior accuracy (99.9% vs 99%), significantly faster processing speeds (66% faster), better API response times (50% faster), and better value (25-33% cost savings). With 24/7 support, non-expiring credits, and advanced AI-powered detection, BillionVerify is the ideal choice for businesses that prioritize speed, accuracy, and cost-effectiveness.
While ZeroBounce offers some unique features like activity scoring and IP geolocation, BillionVerify excels in the core areas that matter most for email deliverability: accuracy, speed, and reliability.
Ready to make the switch? Start your free trial today with 10 free credits daily - no credit card required.