The most certified verifier in the category, priced like it knows
ZeroBounce is an email validation and deliverability platform that verifies whether an address will accept mail, scores the quality of the ones that do, and wraps that in a suite covering inbox placement testing, blacklist and DMARC monitoring, email warmup, and an email finder. It is bootstrapped, founded in 2015, runs on its own owned data centre hardware rather than public cloud, and holds SOC 2 Type 2, ISO/IEC 27001:2022, HIPAA, GDPR, CCPA, and PCI DSS attestations. Pay-as-you-go credits run from $0.0195 each at 2,000 down to $0.0027 at scale, alongside a $99 per month ZeroBounce ONE subscription and a free tier of 100 credits per month.
Overview
ZeroBounce has been in this category since 2015 and has spent the years since turning a verifier into a deliverability platform. The core product still answers the basic question, does this mailbox exist and will it accept mail, but the surrounding surface has grown to include AI-driven quality scoring, an email finder, activity data showing which contacts actually open mail, inbox placement tests, blacklist monitoring, DMARC reporting, a warmup service, and a deliverability dashboard. Very few competitors attempt that breadth, and none of the cheap ones do.
What genuinely separates it is the compliance and infrastructure posture. ZeroBounce operates its own data centre and hardware rather than renting from AWS or Azure, which is a deliberate and unusual choice for a company of its size, and it publishes an evidence pack that includes SOC 2 Type 2 (Type 2 since March 2022), ISO/IEC 27001:2022, HIPAA with a BAA available, EU and UK data processing agreements, PCI DSS, CCPA and CPRA, EU-US and Swiss-US Data Privacy Framework participation, and documented EU AI Act readiness. Uploaded files are deleted within 30 days, customers can choose EU-only or US-only API routing, and the default endpoint geo-routes. If your buyer has a vendor security questionnaire, this is the vendor that answers it without a call.
The bill reflects all of that. Pay-as-you-go starts at $39 for a 2,000-credit minimum, which is $0.0195 per address, and even at a million credits the rate is $0.003199. That is roughly seven times MillionVerifier and more than twice BounceBan at the same volume. The ZeroBounce ONE subscription at $99 a month, or $79 a month billed annually, bundles 10,000 validation credits with 100 email finder credits, inbox placement tests, blacklist monitors, and a 15 percent discount on any pay-as-you-go credits you buy on top.
The company is bootstrapped and has never raised outside capital, which is worth noting in a category where several competitors are owned by larger data businesses. Founder and CEO Liviu Tanase still runs it, headquarters are in Boca Raton, Florida with a Santa Barbara presence, and the team is small relative to the product surface. That combination, wide product, deep certification, no investors, is either reassuring or a warning sign depending on what you value.
Best for
Companies that need one vendor to cover verification and deliverability together, and especially those selling into regulated or procurement-heavy buyers where SOC 2 Type 2, ISO 27001, HIPAA, and a signed DPA with EU routing are requirements rather than nice-to-haves.
Not the right fit for
- Cost-sensitive bulk cleaning: at $649 for 100,000 addresses it is four to thirteen times what MillionVerifier, DeBounce, or Reoon charge for the same list.
- Outbound teams whose central problem is the catch-all bucket; ZeroBounce labels catch-alls and sells you a scoring product to reason about them rather than resolving them the way BounceBan claims to.
- Anyone who only wants a verification API and finds the surrounding suite of warmup, placement testing, and monitoring to be clutter they are subsidising.
- Teams needing a genuinely free working tier beyond spot checks; 100 credits a month is an evaluation allowance, not an operating budget.
- Buyers who want European vendor ownership as well as European data routing; the company is US-based and the EU option is a routing and DPA arrangement, not an EU-domiciled entity.
How it works
- 1
You upload a list in the web app, connect an email service provider, or call the validation API. ZeroBounce runs syntax checks, domain and MX resolution, disposable and role-account detection, spam-trap and abuse-address flags, and a mailbox-level check, returning a status such as valid, invalid, catch-all, spam trap, abuse, do-not-mail, or unknown, plus sub-status detail explaining why.
- 2
Accept-all domains are returned as catch-all rather than resolved into valid or invalid. ZeroBounce's answer to that ambiguity is AI Scoring, a separately credited service that assigns a quality score to an address so you can decide which catch-alls are worth the risk instead of receiving a binary verdict the underlying protocol cannot support.
- 3
Around the verification core sit the deliverability tools. Inbox placement tests send to a seed set and report where mail lands, email server testing checks SPF, DKIM, and DMARC configuration, blacklist monitoring watches your sending IPs and domains, the DMARC monitor surfaces unauthorised senders, and warmup builds engagement history on a new domain. Each consumes its own credit type from the same balance.
- 4
For ongoing hygiene, integrations with more than 200 platforms plus Zapier let verification run at the point of capture or on a schedule against your ESP or CRM, and the API can be pinned to EU-only or US-only endpoints for data residency.
Feature breakdown
28 features in 5 modulesEmail validation core
The verification engine, with a richer status vocabulary than most of the category.- Multi-layer address validation
- Syntax, domain, MX, and mailbox-level checks combine into a status with an explanatory sub-status rather than a bare deliverable or not.
- Catch-all identification
- Accept-all domains are surfaced as their own status so you can segment them deliberately rather than discovering them at send time.
- Spam trap and abuse detection
- Known spam traps and addresses belonging to serial complainers are flagged separately, which is the difference between a bounce and a blocklisting.
- Disposable and role-account flags
- Temporary mailbox providers and generic addresses such as info@ or sales@ are identified so you can apply different rules to them.
- Do-not-mail list
- Addresses associated with litigation risk or known problem recipients are marked rather than silently passed through.
- Free unknown results
- ZeroBounce does not charge credits for results it returns as unknown, so you pay for answers rather than for attempts.
Scoring, finding, and enrichment
The layer that decides what to do with the addresses verification cannot settle.- AI Scoring
- Assigns a quality score to an address, which is the practical mechanism for triaging catch-alls that a binary verdict cannot resolve. Billed as its own credit type.
- Email Finder
- Locates professional addresses by name and domain, with 10 finder credits on the free tier and 100 bundled into ZeroBounce ONE.
- Domain search
- Finds the addresses associated with a company domain rather than one contact at a time.
- Email activity data
- Reports which contacts are actually active in their inboxes, which is a different and often more useful signal than whether the mailbox merely exists.
Deliverability suite
The reason ZeroBounce costs more than a verifier, and the reason some teams only need one vendor.- Inbox placement testing
- Sends to a seed set and reports which providers deliver to inbox, promotions, or spam before the real campaign goes out.
- Blacklist monitoring
- Watches sending IPs and domains against blocklists and alerts on a listing rather than leaving you to discover it from a drop in replies.
- DMARC monitor
- Parses DMARC aggregate reports to surface unauthorised senders using your domain and to track authentication alignment.
- Email server testing
- Checks SPF, DKIM, DMARC, and server configuration in one pass, which is the fastest way to find the misconfiguration behind a placement problem.
- Email warmup
- Builds engagement history on a new or recovering sending domain, so a verifier purchase can also cover the warmup line item.
- Deliverability dashboard
- Aggregates placement, authentication, and blocklist signals into one view instead of four separate tools.
Security, compliance, and infrastructure
The most thoroughly documented posture of any vendor in this category.- SOC 2 Type 2 and ISO/IEC 27001:2022
- Audited annually under AICPA guidelines with Type 2 certification since March 2022, and ISO 27001 certified by MSECB against the current 2022 standard.
- HIPAA with BAA
- HIPAA SOC 2 Type 2 certified since August 2023 with a business associate agreement available for covered entities.
- Owned data centre
- Core verification workloads run on hardware ZeroBounce owns and operates rather than on AWS or Azure, which removes an entire class of subprocessor questions.
- EU or US API routing
- You can pin traffic to api-eu.zerobounce.net or api-us.zerobounce.net, with the default endpoint geo-routing by request origin.
- Thirty-day file deletion
- Uploaded validation files are deleted within 30 days and can be deleted manually at any time before that.
- Data Privacy Framework and DPAs
- Active participant in the EU-US and Swiss-US Data Privacy Framework since December 2017, with separate EU and UK data processing agreements published.
- Published uptime SLA
- A 99.99 percent API uptime SLA with a public status page and 90 days of history, plus quarterly penetration tests.
Developer and integration surface
Broad enough that connecting it is rarely the hard part.- Validation and finder APIs
- Separate documented APIs for validation, AI scoring, and email finding, with API wrappers published for common languages.
- Two hundred plus integrations
- Direct connectors to major ESPs, CRMs, and form tools, plus Zapier for anything not covered natively.
- Bulk and real-time paths
- The same credit balance covers list uploads and per-request API calls, so form-level validation and periodic cleaning are not separate purchases.
- iOS application
- A mobile app for checking results and account status, which no competitor in this set offers.
- Free public tools
- A free email verifier, list evaluator, blacklist checker, and DMARC checker sit outside the paywall as evaluation aids.
Use cases
4 documentedHealthcare or fintech marketer facing a vendor security review
Legal will not approve an email verification vendor without a SOC 2 report, an ISO certificate, a DPA, and in the healthcare case a signed BAA.
ZeroBounce supplies all four from a published trust centre, plus HIPAA certification and the ability to pin traffic to EU-only endpoints, so the review closes without a bespoke negotiation.
Marketing lead consolidating four deliverability tools
Verification, inbox placement testing, blacklist monitoring, and warmup each sit with a different vendor, and nobody can correlate a placement drop with a list problem.
ZeroBounce ONE at $99 a month covers all four from one credit balance and one dashboard, and the consolidated cost usually lands below the sum of the separate subscriptions.
B2B team deciding what to do with catch-all addresses
Twenty percent of a list comes back as catch-all and the choice is between deleting real prospects and risking the sending domain.
AI Scoring ranks those addresses by quality so the top band can be mailed first in a controlled volume, which is a slower answer than BounceBan's resolution claim but a more conservative one.
Developer adding validation at signup
Fake and disposable addresses are polluting the user table and triggering bounces from transactional mail.
The real-time API rejects disposable and invalid addresses at the form, drawing on the same credit balance as bulk cleaning, with a 99.99 percent uptime SLA behind it.
Pricing
from $0 for 100 credits a month, then $39 for 2,000 pay-as-you-go credits or $99 a month for ZeroBounce ONETwo paths that combine: prepaid pay-as-you-go credits on a volume ladder, and the ZeroBounce ONE monthly subscription which bundles credits and deliverability tools and discounts further credit purchases by 15 percent.
| Plan | Price | Includes |
|---|---|---|
| Freemium | $0 per month |
Requires a business or premium domain to sign up for the monthly refresh. |
| Pay as you go | $39 to $26,998 one-time credit purchase |
Minimum purchase is 2,000 credits. Credits also fund AI Scoring, Email Finder, and domain search. |
| ZeroBounce ONE (monthly) | $99 per month |
The bundle only makes sense if you use the deliverability tools; for pure verification the credits alone are worse value than a bulk purchase. |
| ZeroBounce ONE (annual) | $948 per year, equivalent to $79 per month |
|
Add-ons
- AI Scoring (Charged from the same credit balance): Used to triage catch-all and ambiguous addresses.
- Email Finder (Charged from the same credit balance): 10 credits free monthly, 100 bundled with ZeroBounce ONE.
- Deliverability consulting (Quoted): Human help with placement problems; the only genuinely sales-gated part of the offering.
Billing notes
- The published pay-as-you-go ladder is: 2,000 for $39, 5,000 for $69, 10,000 for $129, 25,000 for $274, 50,000 for $499, 100,000 for $649, 250,000 for $1,299, 500,000 for $2,199, 1,000,000 for $3,199, 2,000,000 for $5,999, 5,000,000 for $13,499, and 10,000,000 for $26,998.
- Per-credit cost falls from $0.0195 at the 2,000 minimum to $0.0027 above five million, a ladder that is steep at the bottom and flattens hard at the top.
- Credits never expire, and unknown results are not charged, so the effective cost per usable answer is slightly better than the headline rate.
- ZeroBounce ONE members receive 15 percent off pay-as-you-go purchases, which is the only way to combine the subscription tools with sane bulk economics.
- Volumes above one million credits are also available through custom enterprise quotes, but everything up to ten million is purchasable self-serve.
Value assessment: Priced purely as a verifier, ZeroBounce is the most expensive credible option here: $649 to clean 100,000 addresses against $149 for MillionVerifier and $135 for DeBounce. Priced as a deliverability platform with audited compliance, owned infrastructure, EU routing, and a HIPAA BAA, it is reasonable, because the alternative is a cheap verifier plus a placement testing tool plus a blacklist monitor plus a warmup service plus a security questionnaire nobody can answer. The decision is therefore not about credits at all. If you will use the suite or you need the certifications, ZeroBounce ONE at $79 to $99 a month is defensible. If you want a clean list and nothing else, you are overpaying by a factor of four and should buy elsewhere.
Strengths & limitations
Strengths
- By far the strongest compliance posture in the category: SOC 2 Type 2, ISO/IEC 27001:2022, HIPAA with BAA, PCI DSS, GDPR with an internal DPO, CCPA and CPRA, Data Privacy Framework participation, and documented EU AI Act readiness.
- Runs on its own owned data centre hardware rather than public cloud, which eliminates a long list of subprocessor and residency objections before they are raised.
- Selectable EU-only or US-only API routing plus 30-day automatic deletion of uploaded files gives a concrete, checkable data-handling story rather than a policy paragraph.
- The breadth is real: validation, AI scoring, email finder, activity data, inbox placement, blacklist monitoring, DMARC, server testing, warmup, and a deliverability dashboard from one account.
- Bootstrapped since 2015 under its founding CEO, with no investor pressure and no acquisition overhang, which in this category is not the norm.
- Unknown results are not charged and credits never expire, so the effective cost is the headline cost.
- A 99.99 percent API uptime SLA with a public status page, quarterly penetration testing, and a vulnerability disclosure programme through Intigriti.
Limitations
- The most expensive per-credit pricing of any self-serve vendor in this comparison set, by a wide margin at every volume below a million.
- The pay-as-you-go ladder is punishing at low volume: $0.0195 per address at the 2,000 minimum is more than sixteen times what Reoon charges for a 10,000 pack.
- Catch-all addresses are labelled rather than resolved, so the hardest and most valuable part of a B2B list still comes back as a judgement call, mitigated only by a separately billed scoring product.
- The free tier at 100 credits a month is an evaluation allowance and cannot support any real cleaning workload.
- The product surface is wide enough that a buyer who only wants verification is subsidising nine features they will never open.
- The company is small relative to its product breadth, with public estimates in the low tens of employees, which is worth weighing against the enterprise-grade positioning.
- Deliverability consulting is the one sales-gated element, so the fully-served version of the offering is not entirely self-serve.
Head-to-head comparisons
5 alternativesZeroBounce vs NeverBounce
from $8 per 1,000 credits pay-as-you-go, or $49 per month on GrowthBoth are premium-priced American verifiers, but NeverBounce is owned by ZoomInfo and has drifted toward a go-to-market data play, while ZeroBounce is bootstrapped and has drifted toward deliverability tooling and compliance. ZeroBounce is cheaper at scale ($3,199 per million against NeverBounce's published $0.002 floor applying only up to two million credits) and vastly better documented on security. Choose NeverBounce if you are already inside the ZoomInfo stack; choose ZeroBounce in almost every other case where budget allows either.
Full ZeroBounce vs NeverBounce comparisonZeroBounce vs Bouncer
from $8 for 1,000 credits, with 100 free credits on signupBouncer is the European answer to the same brief: SOC 2 Type II, ISO 27001, GDPR with EU data residency, plus a public accuracy guarantee and pricing roughly a sixth of ZeroBounce at 100,000 addresses ($400 against $649, and far wider at lower volumes). ZeroBounce wins on suite breadth, HIPAA, and owned infrastructure. If your buyers are European and your need is verification with credible compliance, Bouncer is the better value; if you need HIPAA, warmup, and DMARC in the same account, ZeroBounce.
Full ZeroBounce vs Bouncer comparisonZeroBounce vs MillionVerifier
from $39 for 10,000 credits, or $0.0039 per emailMillionVerifier charges $149 for the 100,000 addresses ZeroBounce charges $649 for, does not charge for catch-alls or unknowns at all, and backs results with a money-back guarantee tied to a 4 percent hard bounce threshold. It has almost no compliance documentation and a four-person team. This is the clearest fork in the category: buy MillionVerifier if the job is cleaning lists cheaply, buy ZeroBounce if someone will audit your vendor choices.
Full ZeroBounce vs MillionVerifier comparisonZeroBounce vs Emailable
from $38 for 5,000 credits pay-as-you-go, or $32.30 per month on subscriptionEmailable is the middle path: SOC 2 Type II, GDPR, a 99 percent deliverability guarantee, 250 free credits, and pricing anchored at $38 for 5,000 that undercuts ZeroBounce meaningfully while still offering inbox placement and blacklist monitoring. ZeroBounce goes further on certifications, owned infrastructure, and suite depth. Pick Emailable for speed and a lighter bill; pick ZeroBounce when the compliance evidence pack is the deliverable.
Full ZeroBounce vs Emailable comparisonZeroBounce vs BounceBan
from $34 for 10,000 credits on subscription ($40 pay-as-you-go), with unlimited free single verificationsThese two answer opposite questions. BounceBan tries to resolve catch-all addresses into definite verdicts and publishes nothing about its corporate self; ZeroBounce labels catch-alls conservatively and publishes everything about itself. An outbound team whose pipeline is stuck in the risky bucket should test BounceBan; a company whose blocker is a security questionnaire should buy ZeroBounce. Plenty of teams end up running both.
Full ZeroBounce vs BounceBan comparisonImplementation & onboarding
- Setup time
- Minutes for a list upload or an API key. Connecting an ESP or CRM integration takes an hour at most. Standing up the deliverability suite, meaning placement tests, blacklist monitors, and DMARC ingestion, is a half-day exercise because DNS changes are involved.
- Learning curve
- Moderate, and it comes from breadth rather than difficulty. The validation statuses and sub-statuses are richer than most competitors and reward reading the documentation once. The suite tools each carry their own mental model, and teams commonly use two of them and ignore the rest.
- Onboarding
- Fully self-serve from the free tier through to ten million credits. There is no demo gate on the product. Deliverability consulting is the only element that requires a conversation, and enterprise custom quotes exist above the published ladder.
- Migration notes
- Nothing to migrate technically, since verification results are disposable and credit balances do not transfer. The practical migration work is comparing status vocabularies: ZeroBounce returns more granular statuses than most competitors, so mappings in your CRM or ESP automation need updating rather than copying. If data residency is why you are moving, switch the API base URL to the EU or US endpoint explicitly rather than relying on geo-routing.
Platform, API & security
- Platforms
- Web applicationREST APIsiOS app200-plus native integrationsZapier
- API
- Separate documented APIs for email validation, AI scoring, and email finding, with published wrappers for common languages, an API status page, and a 99.99 percent uptime SLA. Endpoints can be pinned to api-eu.zerobounce.net or api-us.zerobounce.net, and the default api.zerobounce.net geo-routes by request origin.
- Compliance
- SOC 2 Type 2 (Type 2 since March 2022, audited annually)ISO/IEC 27001:2022 (certified by MSECB)HIPAA SOC 2 Type 2 with BAA availableEU GDPR with internal DPO and EU and UK DPAsCCPA and CPRAPCI DSS with monthly third-party assessmentsEU-US and Swiss-US Data Privacy Framework participantEU AI Act readiness documented
- Data residency
- EU-only routing via api-eu.zerobounce.net and US-only routing via api-us.zerobounce.net, with the default endpoint geo-routing by origin. Core verification runs on ZeroBounce-owned data centre hardware rather than AWS or Azure.
- SSO
- Not published as a standard plan feature.
- Security notes
- Uploaded validation files are deleted within 30 days and can be deleted manually at any time. Files are uploaded over TLS and stored encrypted at rest. Quarterly penetration tests and IT security audits, a vulnerability disclosure programme via Intigriti, a published subprocessor list, and a trust centre at trust.zerobounce.net holding the SOC 2 report, HIPAA report, penetration test report, security prospectus, and CAIQ Lite, HECVAT Lite, and SIG self-assessments.
Support & resources
- Channels
- 24/7 supportHelp deskLive chatEmailDeliverability consulting (quoted separately)
- Documentation
- Extensive documentation covering validation statuses, API quickstarts, AI scoring, the finder API, and wrappers, plus a public status page and an FAQ.
- Community
- No user forum, but an active blog, webinar programme, agency and affiliate partner directories, and published case studies.
Company
- Founded
- 2015
- Headquarters
- Boca Raton, Florida, United States
- Ownership
- Bootstrapped and founder-led; no outside investment
- Founders
- Liviu Tanase
- Employees
- Approximately 20 (public estimates, 2026)
- Funding
- No venture or private equity funding; the company reports having reached eight-figure revenue without raising capital.
Timeline
- 2015Founded by Liviu Tanase as an email validation service, self-funded from the start.
- 2017Joins the EU-US and Swiss-US Privacy Shield, later the Data Privacy Framework, and becomes a BBB accredited business.
- 2020Achieves SOC 2 Type 1 certification in March, beginning a compliance programme that becomes the company's main differentiator.
- 2022Upgrades to SOC 2 Type 2 in March and adds ISO/IEC 27001 certification, moving the platform into procurement-friendly territory.
- 2023Adds HIPAA SOC 2 Type 2 certification with BAA availability, opening healthcare buyers, and expands the deliverability suite.
- 2025Consolidates subscription pricing into ZeroBounce ONE at $99 a month with bundled credits, placement tests, and monitors.
- 2026Publishes EU AI Act readiness, ISO/IEC 27001:2022 recertification, and selectable EU or US API routing alongside a full public trust centre.
Integrations
- More than 200 native integrations
- Zapier
- Mailchimp
- HubSpot
- Salesforce
- ActiveCampaign
- Klaviyo
- Brevo
- Marketo
- Validation, AI scoring, and email finder REST APIs
- Published API wrappers for common languages
Frequently asked questions
10 questionsWhat is ZeroBounce?
ZeroBounce is an email validation and deliverability platform founded in 2015. It verifies whether addresses exist and will accept mail, scores ambiguous ones with an AI model, finds professional addresses, and adds inbox placement testing, blacklist monitoring, DMARC reporting, email server testing, and warmup around that core. It is bootstrapped, runs on its own data centre hardware, and holds SOC 2 Type 2, ISO 27001, and HIPAA certifications.
How much does ZeroBounce cost per email?
Pay-as-you-go pricing runs from $0.0195 per credit at the 2,000-credit minimum down to $0.0027 above five million. The three reference points most buyers care about are $129 for 10,000 credits ($0.0129 each), $649 for 100,000 ($0.00649 each), and $3,199 for one million ($0.003199 each). The ZeroBounce ONE subscription is $99 a month or $948 a year and includes 10,000 monthly validation credits plus a 15 percent discount on additional credits.
Does ZeroBounce have a free plan?
Yes. The Freemium tier gives 100 validation credits every month, plus 10 email finder credits, one inbox placement test, one email server test, and one blacklist monitor. Credits refresh monthly and do not expire. It is enough to evaluate the product and not enough to clean a real list.
How does ZeroBounce handle catch-all addresses?
It identifies them and returns catch-all as a distinct status rather than guessing. Because a catch-all server accepts mail for any address, no protocol-level check can prove the mailbox exists, and ZeroBounce takes the conservative position. Its answer for what to do next is AI Scoring, which rates address quality so you can mail the strongest catch-alls first. If resolving catch-alls into definite verdicts is your central problem, BounceBan attacks it more directly.
Do ZeroBounce credits expire?
No. Purchased credits never expire, and free-tier credits refresh monthly. ZeroBounce also does not charge credits for results returned as unknown, so the price per usable answer is marginally better than the headline per-credit rate.
Is ZeroBounce GDPR compliant and where is my data stored?
ZeroBounce publishes EU and UK data processing agreements, has maintained GDPR compliance since before May 2018 with an internal data protection officer, and participates in the EU-US and Swiss-US Data Privacy Framework. Uploaded validation files are deleted within 30 days. You can pin API traffic to an EU-only or US-only endpoint, and core verification runs on hardware ZeroBounce owns rather than on AWS or Azure.
What certifications does ZeroBounce hold?
SOC 2 Type 2 (Type 2 since March 2022, audited annually), ISO/IEC 27001:2022 certified by MSECB, HIPAA SOC 2 Type 2 with a BAA available, PCI DSS with monthly third-party assessments, plus CCPA and CPRA controls and documented EU AI Act readiness. The signed reports and self-assessments are available on request through trust.zerobounce.net.
Is ZeroBounce worth the price compared with cheaper verifiers?
Only if you use more than the verifier. Cleaning 100,000 addresses costs $649 here against $149 at MillionVerifier and $135 at DeBounce. What that premium buys is the certification pack, owned infrastructure, EU routing, and a suite that replaces separate placement testing, blacklist monitoring, DMARC, and warmup subscriptions. Teams that only want a clean CSV are overpaying; teams facing a security questionnaire or consolidating four tools usually are not.
Who owns ZeroBounce?
It is privately held and bootstrapped, founded and still led by Liviu Tanase, headquartered in Boca Raton, Florida with a Santa Barbara presence. It has taken no venture capital or private equity investment, which distinguishes it from NeverBounce, owned by ZoomInfo, and Emailable, owned by Cache Ventures.
Can ZeroBounce validate addresses in real time at signup?
Yes. The validation API supports per-request calls drawing on the same credit balance as bulk cleaning, backed by a published 99.99 percent uptime SLA and a public status page. There are also more than 200 native integrations plus Zapier for connecting it to ESPs, CRMs, and form builders without writing code.
Editorial verdict
ZeroBounce is the vendor you buy when the purchase has to survive scrutiny. SOC 2 Type 2, ISO/IEC 27001:2022, HIPAA with a BAA, PCI DSS, EU and UK DPAs, selectable EU routing, 30-day deletion, quarterly penetration tests, and its own data centre add up to a posture nothing else in this category approaches, and around that sits a genuinely broad deliverability suite that can retire three or four other subscriptions. The price is the price of all that: at $649 per 100,000 addresses it costs four times MillionVerifier and does not even try to resolve the catch-alls that matter most to outbound teams. Buy it if compliance, breadth, or consolidation is what you are actually solving for, and take ZeroBounce ONE annually at $79 a month so the bundled tools carry their weight. If you simply want a clean list at the lowest defensible cost, this is the wrong end of the market.
Written by the SaaSTracker editorial team. Awards, when shown, are judged against the published criteria in our methodology.
Awards & badges
1 heldZeroBounce holds 1 award from the SaaSTracker editorial program. Badges may be displayed by the vendor; each embed links back to this profile.
Category Leader · Email Verification
“The most certified verifier in the category, with the appends, placement tools, and compliance posture the biggest senders require.”
<a href="https://saastracker.org/products/zerobounce"><img src="https://saastracker.org/badges/embed/zerobounce/category-leader-summer-2026.svg" width="180" height="180" alt="ZeroBounce: Category Leader, Email Verification. SaaSTracker Summer 2026 Awards." /></a>
