ZeroBounce
Email verification with extras — validation, scoring, and data append that goes beyond simple valid/invalid checks
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The Verdict
“ZeroBounce is a top-tier email validation platform trusted by 350K+ customers. Its email scoring feature and SOC 2 certification set it apart from competitors. Essential tool for any team doing email outbound at scale. Best paired with a data provider and sequencer.”
Best For
Teams that want email verification PLUS additional intelligence — activity scoring, gender detection, and data append beyond basic validation
Not Great For
Budget-focused teams doing simple list cleaning — MillionVerifier at 1/3 the price does the core verification job well enough
Overview
ZeroBounce is an email validation and deliverability platform that helps businesses clean email lists, validate addresses in real-time, and improve inbox placement. It offers email verification, scoring, blacklist monitoring, inbox placement testing, and an email finder tool.
Email marketers, sales teams, developers, agencies
1-500+
Capabilities
Key Features
- Email validation and verification
- Email list cleaning (bulk upload)
- Real-time email verification API
- Email scoring (activity scoring)
- Blacklist monitoring
- Inbox placement testing
- Email finder tool
- Catch-all email verification
- Data append (enrich with additional info)
- DMARC monitoring
Benefits
- Reduces bounce rates to protect sender reputation
- Email scoring identifies active vs inactive addresses
- API enables real-time validation in signup forms and workflows
- 98%+ accuracy claimed for email validation
Pros & Cons
Pros
- +98%+ validation accuracy
- +Free tier with 100 validations/month
- +SOC 2 Type II certified
- +Email scoring is unique and valuable
- +Strong API and integration ecosystem
Cons
- -Per-email pricing can get expensive at scale
- -Not a prospecting or enrichment tool
- -Website is JavaScript-heavy (hard to scrape pricing details)
- -Email finder is secondary to validation focus
Outbound Use Cases
Financials & Scale
| Plan | Price | Limits | Features |
|---|---|---|---|
| Free | $0 | 100 email validations/month | Email validation, Email scoring |
| Pay-as-you-go | Starting at $16 for 2,000 validations | Volume-based pricing | Email validation, Email scoring, Catch-all verification |
| Monthly Subscription | Volume-based monthly plans | Higher volumes at lower per-email cost | All validation features, API access, Blacklist monitoring, Inbox placement testing |
ZeroBounce is ~$0.008/email for small volumes. MillionVerifier is ~$0.003/email. NeverBounce is comparable to ZeroBounce. For 50K emails: ZeroBounce = ~$400, MillionVerifier = ~$150. ZeroBounce adds email scoring and data append — worth the premium if you need more than pass/fail verification.
The Reddit Pulse
Community Pros
- +Well-known email verification provider mentioned alongside Hunter.io and Findymail
- +Integrated with Clay for outbound list building
- +Part of the standard verification tool stack for cold email
Community Cons
- -Frequently gives conflicting results vs. other verification tools
- -ZeroBounce marked emails as 'valid' that others flagged 'invalid' (and vice versa)
- -Marked emails as 'do_not_mail' while competitors said 'verified'
- -Users report it's rare for ZeroBounce to agree with other tools, undermining trust
- -Accuracy concerns make users question which provider to rely on
Reddit Questions
- ? Which email verification tool is most accurate - ZeroBounce, Findymail, or Hunter.io?
- ? Why do ZeroBounce and other verification tools give conflicting results?
- ? Should you use a weighted/majority approach for email verification?
Thinking of Switching?
Competitive Landscape
Technical Stack
Integrations
Data Intelligence
Head-to-Head Comparisons
Company Intel
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