ZeroBounce

What ZeroBounce does

ZeroBounce is a Santa Barbara-based email verification and deliverability platform founded in 2013 by Liviu Tanase, serving over 600,000 clients globally. Its core product validates single emails, bulk lists, and form signups in real time at a guaranteed 99.6% accuracy rate, with an average 2024 "unknown" result rate of 1.69%. The platform runs on ZeroBounce-owned hardware infrastructure (no AWS, Azure, or shared cloud platforms) and exposes the same engine via a REST API with 99.99% reliability, 1.09-second average response times, and SDK support across 16 programming languages.

The product portfolio centers on the core validation engine and has expanded into a suite of deliverability and data-quality modules: AI Email Scoring for predictive engagement analysis, Email Finder, Activity Data, Email Warmup, DMARC Monitor, and Blacklist Monitor (covering 200+ providers), plus free DNS authentication tools (SPF, DKIM, DMARC generators). Compliance certifications include SOC 2 Type 2, ISO 27001, HIPAA, PCI-DSS, GDPR, CCPA, and Data Privacy Framework participation, with third-party penetration testing via HackerOne and CyberSmart Defense. Cloudflare Enterprise provides WAF and unmetered DDoS protection.

The business operates a hybrid product-led growth and enterprise sales motion: a freemium tier (100 free monthly verifications) drives SMB self-serve acquisition, while enterprise account managers close multi-year contracts at 5M+ email volumes, supported by Regional Data Residency for data sovereignty. Revenue is generated through usage-based credit purchases (Pay-As-You-Go, Auto-Pay subscriptions) and custom enterprise agreements, with credits that never expire. Distribution combines direct website self-serve, API access, integrations with 60+ marketing/CRM platforms, a Zapier marketplace listing (2,000+ apps), and an Agency Partner Program for VAR-led channel sales. Enterprise customer logos include Intel, LinkedIn, Disney, Coca-Cola, Amazon, Netflix, PwC, Samsung, Airbnb, and HubSpot, primarily used as credibility references alongside the long tail of SMB users.

Name

ZeroBounce

Legal name

ZeroBounce

Website

https://zerobounce.net

Company type

Private

Founded year

2013

Operating status

Operating

Headcount range

101–250 employees

Short description

ZeroBounce is a bootstrapped email verification and deliverability platform that validates email addresses in real time at 99.6% accuracy for 600,000+ clients, including enterprises like Intel, Disney, and Amazon, via a freemium PLG motion, credit-based pricing, and a REST API spanning 16 programming languages.

Ownership category

akta.pro rank

Product category

Email Verification and Deliverability Software

SIC

Services-Prepackaged Software (7372)

akta.pro primary industry

Authentication (MFA/Passwordless/Biometrics) Platforms (BPAMAEAE)

Keywords

• Email verification
• Email validation
• Email deliverability
• Email list cleaning
• Email scoring

Headquarters

HQ city

Santa Barbara

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Infrastructure, Personnel, Marketing or Sales, Operations

Revenue model

1. Email Validation Credits: Credit-based model where customers purchase email validation credits. Credits never expire. Minimum purchase of 2,000 email validation credits. Volume-based pricing with discounts for larger purchases. Both monthly subscription (auto-refresh every 30 days) and pay-as-you-go options available.
2. AI Email Scoring Credits: Separate credit system for AI-powered email scoring. Offered at 1 credit per email address scored. Available as add-on to email validation services.
3. Enterprise Plans: Custom enterprise-level agreements with dedicated account managers, personalized plans, and expedited legal/security reviews. Volume pricing for large-scale validation needs (5M+ emails).
4. Auto-Pay Subscription: Automatic credit replenishment feature that triggers purchases when balance falls below specified threshold. Streamlines recurring validation needs for API users.

Pricing tiers

Go-to-market motion2 records

Distribution channels6 records

Marketing channels7 records

Core offering

ZeroBounce provides email verification and validation services with a guaranteed 99.6% accuracy rate, available as real-time single-email checks, bulk list cleaning, and API-driven signup validation. The platform is complemented by AI-powered email scoring, email activity data, email warmup, DMARC and blacklist monitoring, email finder, and authentication record generators, all delivered as a unified SaaS platform accessible via web console and REST API.

Product overview

ZeroBounce is an email verification and deliverability platform offering a unified suite of tools centered on its core 99.6% accurate Email Validation service. The platform provides both bulk email list cleaning and real-time API validation, complemented by AI-powered Email Scoring for predictive engagement analysis. Supporting modules include Email Finder, Activity Data, Email Warmup, DMARC Monitor, and Blacklist Monitor. The product portfolio also includes free tools (DKIM Generator, SPF Generator, DMARC Generator, Freemium Email Verifier) and subscription options (ZeroBounce ONE pay-as-you-go, Enterprise Plans). All services are accessible via comprehensive APIs with SDK wrappers for multiple programming languages.

Differentiator

Problem solved

Functional benefit

Products and services

• Email Validation Core email verification service providing 99.6% guaranteed accuracy for validating single emails, bulk lists, or signups in real time. Identifies valid, invalid, catch-all, abuse, disposable, and spam-trap email addresses. Credits never expire and customers never pay for 'unknown' results.
• A.I. Email Scoring Machine learning-powered scoring system that predicts email address quality and engagement likelihood. Scores catch-all and unknown addresses to determine which contacts are worth emailing. Sold via a separate credit system as an add-on to email validation.
• Email Finder Tool to find and locate individual email addresses and perform domain searches to discover all email addresses associated with a specific domain.
• Activity Data Provides insights into email recipient engagement behavior, determining which contacts are most likely to open and click future campaigns based on recent email activity.
• Email Validation API REST API enabling real-time email validation for website forms, registration pages, and applications. Validates email addresses as users submit them and can reject invalid addresses at sign-up. Supports 16 programming languages including Rust, Ruby, Python, and JavaScript.
• DMARC Monitor Email deliverability service that walks users through creating and adding a DMARC record for their domain, then provides 24/7 monitoring of all sent emails and automated notifications when suspicious activity is detected.
• Blacklist Monitor Monitoring tool that checks domain and IP reputation against 200+ known blacklist providers, automatically alerting users when and where a blacklisting occurs.
• Email Warmup Tool for gradually warming up email IP addresses and domains to establish sender reputation before sending high-volume campaigns.
• Email Deliverability Tools Suite of deliverability tools including mail server tester, inbox placement tester, and related diagnostics to help increase email inbox placement rates.
• DKIM Generator Free online tool for creating DKIM DNS records to add unique digital signatures to outbound emails, enhancing email authentication and domain protection.
• SPF Generator Free online tool for creating Sender Policy Framework (SPF) DNS records to authorize IP addresses to send emails from a domain.
• DMARC Generator Free tool for creating DMARC DNS records that instruct email providers on how to handle emails failing authentication checks.

Quantifiable outcome

• 23% of email addresses in company databases become invalid or risky within one year
• +3 more outcomes

Named customers19 records

Segments6 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration7 records

AI capability3 records

Feature9 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• HackerOnecoreTechnology or IntegrationZeroBounce works alongside HackerOne, a community of hackers and researchers, for continuous platform security testing. HackerOne continuously tests the ZeroBounce platform to seek out potential vulnerabilities within given parameters, exposing opportunities for bad actors before they threaten customer data.
• CyberSmart DefensecoreTechnology or IntegrationZeroBounce partners with CyberSmart Defense to execute various types of penetration testing, simulating attacks from inside and outside the system to expose potential vulnerabilities. CyberSmart Defense has extensive knowledge of the ZeroBounce platform.
• CloudflarecoreTechnology or IntegrationZeroBounce uses Cloudflare Enterprise for Web Application Firewall (WAF) protection, providing 100% uptime guarantee and unmetered DDoS protection. Cloudflare also provides perimeter security for email address logging during API validation calls.
• OktacoreTechnology or IntegrationZeroBounce integrates Okta identity protection for new members, offering secure, passwordless universal sign-in complete with attack protection. Customers can control account access from anywhere at any time.
• ZapiercoreTechnology or IntegrationZapier enables ZeroBounce integration with over 2,000 applications for automated workflow connections when native integrations are not available.
• StripecoreTechnology or IntegrationStripe serves as ZeroBounce's payment gateway, processing cardholder data for credit purchases and subscriptions.
• PayPalcoreTechnology or IntegrationPayPal serves as an alternative payment gateway for customers preferring PayPal-based transactions.
• TrustPilotminorGTM or Marketing PartnerTrustPilot is used to send review invitations and collect genuine user feedback about ZeroBounce services.
• G2minorGTM or Marketing PartnerG2 is used to send review invitations and collect genuine user feedback about ZeroBounce services.

Scale indicators14 records

Recent moves6 records

Expansion highlights6 records

Market position

Competitive moat6 records

Key highlights15 records

Customer concentration

• Xx.com/zerobounce1
• YouTubeyoutube.com/channel/UCgtYUvzaIabFdEXAKxDVjYg/featured
• Facebookfacebook.com/zerobounce
• LinkedInlinkedin.com/company/zerobounce-net
• Instagraminstagram.com/zerobounce

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about ZeroBounce