Email Verification - Verify emails that
actually deliver.
5-stage pipeline. 65+ signals. Real-time API and bulk processing. Built for teams that can't afford bounces.
Trusted by marketers, agencies & developers at
Backed by Industry Leaders
Trusted and supported by the world's leading technology programs.
Your Stack, Already Covered
Batch list cleaners, real-time webhook handlers, and CMS plugins for every major ESP, CRM, newsletter platform, and eCommerce stack.
Works Everywhere Your List Comes From
BounceZero handles ISP-specific quirks, local compliance requirements, and tricky providers - including catch-all detection on every domain.
Verify by country
Catch-all detection - per provider
Returns 550 for unknown addresses
But blocks verifier IPs - we use dedicated PTR
Throttles SMTP - we use warm IPs + Playwright
Same Microsoft infra as Outlook
icloud.com / me.com / mac.com all verifiable
Gateway accepts all - ML scoring applied
Shares Yahoo infra - warm IPs required
Consumer no - Zoho 360 custom domains often yes
United Internet - individually verifiable
Consumer no - Yandex 360 custom domains often yes
Consumer no - paid custom domains frequently yes
~20% of M365 domains have catch-all enabled
~20% of Workspace domains have catch-all
Try It Live - Verify Any Email Free
Type any email address and run a real 5-stage verification right now - no account needed.
Want to verify more emails?
Drop your email - we'll create your free account with 100 credits instantly.
Free forever - No credit card - 100 credits/month
✓ Great! Setting up your account...
60-Second Product Demo
Watch how BounceZero validates emails in real-time and protects your sender reputation.
The 5-Stage Verification Pipeline
Every email passes through five layers of deep analysis. Each stage adds intelligence that basic validators simply don't have.
Syntax & Local Part Analysis
10+ ChecksDeep structural validation far beyond simple regex. We analyze the actual composition of the email address to detect anomalies invisible to basic validators.
Domain Intelligence
11+ DNS LookupsWe don't just check if a domain has MX records. We build a complete intelligence profile of the mail infrastructure, authentication policies, and domain reputation.
SMTP Deep Verification
AdvancedOur SMTP engine doesn't just ping the server. It uses multiple verification strategies, handles greylisting automatically, and employs a 3-probe technique to accurately detect catch-all domains. How SMTP verification works
Social & Digital Footprint
OSINTReal people leave digital traces. We cross-reference the email against multiple social and identity signals to determine if a real human is behind the address.
Intelligence Enrichment
Deep IntelThe final stage enriches the verification with advanced intelligence signals that only a purpose-built platform can provide. This is where BounceZero separates from every other service - including spam trap detection that protects your sender reputation.
Bayesian + ML Scoring Engine
Every verification signal feeds into our dual scoring engine. Unlike services that return a simple "valid/invalid", BounceZero calculates a precise probability score from 0-100 using 65+ weighted signals.
Bayesian Likelihood Ratios
Each signal contributes a mathematically weighted likelihood ratio. Signals that matter more weigh more.
Machine Learning Blend
ML models trained on real verification data blend with Bayesian priors for maximum accuracy.
Temporal Decay
Signal freshness matters. Older data points decay in weight automatically to keep scores current.
Plain-English Explanations
Get a human-readable explanation of exactly why each email scored the way it did. No black boxes.
"This email is highly likely to be deliverable. The domain has strong authentication (SPF+DKIM+DMARC), the mailbox was confirmed via SMTP, and a social profile exists, indicating a real user."
Everything You Get
Built for teams who need more than just "valid" or "invalid". Every feature below comes with every verification.
Enterprise-grade security
you can verify
Every email your team sends passes through infrastructure that meets cloud security standards trusted by Fortune 500 procurement teams. Independently assessed, publicly verifiable.
261 controls - 17 security domains - View registry
All 8 sender compliance checks passing - domain reputation, SPF, DKIM, DMARC, spam rate, and delivery errors all green.
All 6 SMTP probe IPs registered with Microsoft's Smart Network Data Services. IP reputation monitored and clean across Outlook and Hotmail infrastructure.
BounceZero Ltd registered in England & Wales (No. 17153835). Subject to UK corporate law, HMRC oversight, and Companies House filing requirements.
Registered with the UK Information Commissioner's Office (Reg. ZC132839) under UK GDPR and the Data Protection Act 2018. View registration
BounceZero vs. ZeroBounce vs. NeverBounce
NeverBounce credits now expire after 12 months under their published policy. ZeroBounce prices pay-as-you-go through a calculator with a 10,000-credit minimum. BounceZero is a published, flat $3.00/1K - and your credits never expire.
| Feature | Other Services | BounceZero |
|---|---|---|
| Syntax Check | ||
| MX Lookup | ||
| SMTP Verification | ||
| Disposable Email Detection | ||
| Role-Based Detection | ||
| Catch-All Detection | ||
| Spamtrap Detection | ||
| Greylisting Auto-Retry | Some | |
| Machine-Learning Scoring | Some | |
| Per-Email SPF / DKIM / DMARC | ||
| BIMI / MTA-STS / DANE | ||
| Domain Age & Full WHOIS | Basic | |
| Social Profile Detection | ||
| Breach Database Cross-Ref | ||
| Homograph / Punycode Detection | ||
| Bayesian + ML Blended Scoring | ||
| Plain-English Explanations | ||
| Certificate Transparency Logs | ||
| Domain Intelligence API |
Based on publicly documented features of leading email verification providers as of 2026.
NeverBounce credits expire. Ours never do.
Since the ZoomInfo acquisition, NeverBounce's published policy gives purchased credits a 12-month expiry (as last reviewed Aug 2026). BounceZero credits never expire - period.
See full comparison4× cheaper. Same 5-stage verification pipeline.
ZeroBounce does not publish flat pay-as-you-go rates - its calculator starts at a 10,000-credit minimum (checked Aug 2026). BounceZero charges a published $3.00/1,000 - with SPF/DKIM/DMARC, ML scoring, and catch-all detection included.
See full comparisonHow Much Are Bad Emails Costing You?
Adjust the sliders to see your real cost of unverified email lists and your exact ROI with BounceZero.
Bad Addresses in List
800
Monthly Sending Waste
$32.00
Annual Savings with BounceZero
$384
Verification Cost
$75
Professional plan
Your ROI
5x
return on investment
* Estimates based on industry average deliverability improvements. Your results may vary. Learn how to improve your deliverability
Developer-First API
Integrate BounceZero into your stack in minutes. Full REST API with 30+ endpoints covering single verification, bulk processing, domain intelligence, and webhook notifications.
Encrypted End-to-End
All API traffic over TLS. Email addresses encrypted in transit and at rest. Your data stays secure.
No Data Retention
Email lists are deleted after processing. We don't store, sell, or share your data. Ever.
GDPR Compliant
Fully compliant with GDPR and international data protection regulations. Your privacy is our priority.
What Our Users Say
From solo developers to enterprise marketing teams - real results from real users.
Simple, Credit-Based Pricing
1 credit = 1 email verification. Every credit includes our full 5-stage pipeline. No feature gating. Credits never expire.
100 free credits every month. No credit card required.
- Full 5-stage pipeline
- 65+ verification signals
- Single & bulk verification
- Credits never expire
- Everything in Starter
- REST API access
- CSV export
- Plain-English explanations
- Everything in Growth
- Priority verification queue
- Domain intelligence reports
- Webhook notifications
- Everything in Professional
- Advanced analytics dashboard
- Bulk lists up to 50K
- Priority email support
- Everything in Business
- 100,000 credits
- Team seats
- Priority support
- Everything in Scale
- 250,000 credits
- Dedicated onboarding
- SLA guarantee
- Everything in Pro Scale
- 500,000 credits
- Custom integrations
- Dedicated account manager
- Everything in Enterprise
- 1,000,000 credits
- White-label option
- Custom SLA
Need higher volumes or custom integrations? Contact us for a tailored solution.
Contact SalesFrequently Asked Questions
Quick answers to common questions. Full FAQ on the pricing page
Share Your Experience
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Email Deliverability Guides
Expert guides on email verification, list hygiene, and improving your sender reputation.
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Start Verifying Emails
in 60 Seconds
Join 2,400+ teams who've already cleaned their lists, protected their sender reputation, and boosted deliverability with BounceZero.
Contact Us
Have questions? Need a custom plan? We'd love to hear from you.
Get in Touch
[email protected]
Phone
+1 (515) 368-9959
+1 (515) 368-9959
Telegram Support
@BounceZeroSupport_bot
Telegram Channel
@BounceZero
We typically respond within 2 hours during business hours. For urgent inquiries, reach us directly via WhatsApp or Telegram for the fastest response.
Email Data & Research
Original deliverability research from 10M+ real verifications - measured, not guessed.
Deliverability Benchmarks 2026
What 10.2M verifications reveal about invalid addresses, catch-all rates and provider differences - including a fresh 500K provider snapshot.
How Fast Lists Decay
826K addresses re-verified: how quickly a clean list rots, and what it costs to ignore it.
Bounce Cost Calculator
What do invalid emails actually cost you? Calculate your annual loss with real benchmark data.
The Catch-All Mirage
Real catch-all rates - and the two providers behind most of it.
M365 vs Google Workspace
The 25-point validity gap - and why it almost disappears once you control for domain size.
Quarterly Deliverability Index
The running B2B email health barometer, updated every quarter.