ZeroBounce
An email verification and deliverability platform with bulk validation, real-time API, and inbox testing.
ZeroBounce is a solid, well-established email verification platform with a generous free tier and strong detection rates, suitable for teams that need to clean lists before cold email campaigns.
What is ZeroBounce?
ZeroBounce is an email verification and deliverability platform that helps teams clean contact lists before sending. It removes invalid, disposable, catch-all, spam-trap, and abuse emails, reducing bounce rates and protecting sender reputation. It also offers email finding (from a name and domain), inbox testing, and deliverability monitoring.
Key features
- Bulk email verification — upload lists and receive cleaned results with bounce, spam-trap, and abuse classification.
- Real-time verification API — validate emails at the point of capture (forms, signups) via REST API.
- Email finding — find an email address from a name and domain.
- Inbox testing — test whether emails land in the inbox, spam, or are blocked.
- Deliverability monitoring — ongoing monitoring of inbox placement.
Pricing
ZeroBounce uses credit-based pricing — buy verification credits and use them as needed.
| Volume | Price per email |
|---|---|
| 100/mo | Free |
| 2,000 | ~$15 ($0.0075/email) |
| 10,000 | ~$65 ($0.0065/email) |
| 100,000 | ~$390 ($0.0039/email) |
Volume discounts apply at higher tiers. Email finding is priced separately.
Strengths & Limitations
Strengths
- ✓ Generous free tier (100 emails/month)
- ✓ Strong detection rates for invalid and spam-trap emails
- ✓ Real-time API for form and signup validation
- ✓ Email finding as a complementary feature
- ✓ Good integration ecosystem via Zapier and direct APIs
Limitations
- ✗ Credit-based pricing can be unpredictable for variable list sizes
- ✗ Email finding priced separately from verification
- ✗ Newer deliverability monitoring less proven than core verification
- ✗ API rate limits on lower tiers
Integrations
Use Cases
- Clean marketing lists before sends to reduce hard bounces and protect sender reputation with 99%-accuracy vendor-claimed validation.
- Validate catch-all and spam-trap domains via activity data scoring before enrolling contacts in cold-email sequences.
- Verify emails in real time via API at sign-up to keep form-fraud and disposable addresses out of the CRM.
- Append missing data — names, phone numbers, geolocation, and gender — to contacts during the verification pass.
Who Should Use ZeroBounce?
Best for
- ✓Teams running cold email who need to protect sender reputation
- ✓Marketing ops cleaning large lists before sends
- ✓Developers needing a real-time verification API
Not ideal for
- —Teams needing a full outbound sequencer
- —Teams that only need email finding (cheaper alternatives exist)
- —Teams with no email sending program
Sources & Verification
Last verified: 2026-10-30 · Vendor research review (not hands-on testing)