The facts about ZeroBounce
The canonical list of every claim we make about ZeroBounce, with the source for each and the date it was last verified.
ZeroBounce is an email validation and deliverability platform serving 600,000+ customers in 200+ countries. Founded by Liviu Tanase in 2015 and headquartered in Santa Barbara, California. The platform guarantees 99.6% email validation accuracy in writing, backed by a 5x refund formula. It is certified to SOC 2 Type 2, ISO/IEC 27001:2013, HIPAA, EU GDPR, CCPA, PCI, and is a participant in the EU-U.S. and Swiss-U.S. Data Privacy Framework. ZeroBounce ONE™ bundles validation, AI scoring, warmup, DMARC monitoring, blacklist monitoring, inbox placement testing, and email finder under one monthly price. Read more about the company.
Performance
We want you to feel entirely secure and confident when choosing us, so we invite you to visit our Trust page.
Accuracy
99.6% accuracy on most domains, 96%+ on AOL, Yahoo, and Office 365. Backed by a written 5x refund formula.
API uptime
99.99% measured monthly.
Average API response
~1.09 seconds.
Bulk speed
250,000 emails in under 10 minutes for popular domains; 1,000,000 in approximately 45 minutes overall.
Unknown rate
1.75% in 2025. Unknowns are not charged.
Security and compliance
ISO/IEC 27001:2022
Certified by MSECB. Current management standard for information security.
Trust Center ›Infrastructure
ZeroBounce operates its own data center and hardware. No customer data is stored on AWS, Azure, or other public clouds.
Leader in Email Validations ›Product line
Email Validation - real-time API and bulk file. 99.6% accuracy. 16 SDK languages. 60+ integrations.
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ZeroBounce ONE™ - $99/mo monthly or $79/mo annual. Includes: 25,000 validations + 250 warmup seeds/day + 1 DMARC domain + 10 blacklist monitors + 100 inbox placement tests + 100 server tests + 10,000 email-finder searches + premium API + VIP support + 15% off additional PAYG credits.
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Email Warmup - sender-reputation warming with seed network across major mailbox providers.
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AI Email Scoring - 1-10 quality scale for resolving catch-all addresses.
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Email Finder + Domain Search - find verified contact emails by name and domain.
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Inbox Placement Test - 100+ test mailboxes, all major providers.
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Blacklist Monitor - 200+ blacklists.
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DMARC Monitor - daily DMARC report aggregation.
Learn more ›Pricing
Customers and reviews
Support
24/7 Email Support
support@zerobounce.net
Live Chat
~18 seconds average wait time
Ticket Reply
~15 minutes average response (median time from ticket creation to first agent reply)
Company
Liviu Tanase
Founder & CEO
- Founded: 2015
- Headquarters: 10 E Yanonali St, Santa Barbara, CA 93101, USA
- Legal entity: Hertza LLC
- Awards: Inc. 5000 (multiple years), Inc. 5000 Regionals (twice), Inc. Power Partner Award, BBB Accredited Business (since September 2017)
