Four people, no investors, and the cheapest honest credit in the category
MillionVerifier is a Hungarian bulk email verification service, founded in 2016 and operated by a tiny bootstrapped team, that sells non-expiring credits from $39 for 10,000 addresses down to $0.00017 each at fifty million. It bills only for good and bad results, charging nothing for risky ones including catch-alls, resolves 30 to 40 percent of catch-all addresses into definitive verdicts inside the standard verification pass at no extra cost, and backs the whole thing with a money-back guarantee that refunds your last payment if your hard bounce rate exceeds 4 percent after cleaning.
Overview
MillionVerifier is what happens when a company decides the entire competition is about price per usable answer and refuses to be distracted. There is no warmup product, no DMARC monitor, no AI agent story, no acquisition, and no investors. There is a verifier, an API, a real-time widget, an automated daily cleaning product called EverClean, forty-odd integrations, and a price list that undercuts almost everyone.
Two policies do most of the work. The first is that you pay only for good and bad emails. Several competitors refund unknowns; MillionVerifier is the only one in this set that also declines to charge for catch-alls, which on a B2B list can be a quarter of the file. The second is the guarantee. If your hard bounce rate after cleaning exceeds 4 percent, the company refunds your last payment, stated without the layers of qualification most vendors bury guarantees under. Between them these two rules change the effective cost of a verification pass more than any headline rate does.
The catch-all handling deserves its own note because it is the differentiator in this category. Rather than labelling accept-all domains risky and selling you a second product to reason about them, MillionVerifier's engine attempts resolution inside the standard pass and states it converts 30 to 40 percent of catch-alls into definitive valid or invalid results, at the cost of one ordinary credit. That is a lower recovery rate than BounceBan claims, at a fraction of the price, and it arrives in the normal download columns rather than as a separate segment to reconcile.
The obvious risk is the company. Public sources put the team at roughly four people operating from Hungary under GBD Software as a Service, with no funding and no security certifications published. There is no SOC 2, no ISO 27001, no trust centre. For a small business cleaning marketing lists this is usually irrelevant; for a regulated buyer it is disqualifying. Price the concentration risk honestly and then decide whether $149 versus $649 for the same hundred thousand addresses settles it.
Best for
Cost-sensitive email marketers, agencies, and outbound teams cleaning lists in the tens of thousands to millions, who want the lowest defensible cost per usable answer and do not need certifications, a deliverability suite, or a large vendor behind them.
Not the right fit for
- Regulated buyers or anyone facing a vendor security review; there is no SOC 2, no ISO 27001, no trust centre, and no published data residency commitment.
- Teams that want verification bundled with inbox placement testing, blacklist monitoring, DMARC reporting, or warmup, none of which MillionVerifier offers.
- Buyers who need a large, resilient vendor; public sources put the team at roughly four people, which is a genuine concentration risk however good the product is.
- Outbound teams whose entire thesis rests on catch-all recovery, since a 30 to 40 percent resolution rate leaves most of that bucket unresolved compared with BounceBan's claim.
- Companies that need enterprise procurement artefacts such as an MSA negotiation, a named account manager, or a signed SLA rather than a published uptime figure.
How it works
- 1
You upload a CSV or TXT file, import directly from a connected email service provider, or call the API. The engine runs syntax, domain, MX, disposable, role, and mailbox-level checks and sorts every row into good, bad, or risky.
- 2
When it hits an accept-all domain, it does not stop. The built-in catch-all resolution attempts to confirm mailbox existence behind the accept-all wall and, according to the vendor, converts 30 to 40 percent of those addresses into definitive valid or invalid answers. Resolved addresses land in the ordinary good and bad columns of your download, with no sub-tags to reconcile and no premium credit charged.
- 3
Billing happens on the way out, not the way in. Only good and bad results consume credits. Risky results, which include both unknowns and unresolved catch-alls, are free, so a list heavy with ambiguous B2B domains costs less to process here than the row count implies.
- 4
For continuous hygiene, EverClean connects to your sending platform and re-verifies your lists every day, removing bad addresses automatically so the account never drifts back into a bounce problem. The real-time widget and API handle the other end, blocking bad addresses at the point of signup.
Feature breakdown
21 features in 4 modulesVerification engine
Ordinary checks done cheaply, plus one genuinely uncommon capability.- Bulk list verification
- Upload CSV or TXT, or import straight from a connected ESP, and clean the whole list in one pass with results downloadable as segmented files.
- Built-in catch-all resolution
- Resolves 30 to 40 percent of accept-all addresses into definitive valid or invalid verdicts inside the normal verification pass, charged as one standard credit rather than as a premium service.
- Ninety-nine percent accuracy claim
- The vendor publishes a 99 percent-plus accuracy rate, backed commercially by the bounce-rate money-back guarantee rather than by an audit.
- Disposable and temporary address blocking
- Maintains what it describes as a large database of temporary mailbox providers, used both in bulk cleaning and at the signup form.
- Email Checker for single addresses
- A single-address checker with 100 free checks, useful for spot verification without touching a list.
- Free deduplication
- Duplicate rows are removed rather than billed, so a messy export does not cost more than a clean one.
Credit economics
The part of the product that is actually a pricing policy, and the reason people switch.- No charge for risky results
- You pay only for good and bad emails. Unknowns and unresolved catch-alls are free, which the vendor notes is more generous than competitors who refund unknowns alone.
- Credits never expire
- Buy a block and use it over any period; there is no monthly clock and no expiry date, in direct contrast with NeverBounce's 12-month rule.
- Auto top-up bonus
- Setting up automatic top-up adds 10 percent extra credits on every payment, manual or automatic, which is a straightforward 9 percent effective discount.
- Million Ever Green promotion
- For every five million credits purchased across the lifetime of the account, including past payments, the company adds one million credits free.
- Money-back bounce guarantee
- If your hard bounce rate after verification exceeds 4 percent, MillionVerifier refunds your last payment. It is the plainest guarantee language in the category.
Automation and real-time
Keeping the list clean instead of cleaning it again.- EverClean daily verification
- Connects to your email service provider and re-verifies contacts every day, removing bad addresses automatically so bounce rates do not creep back.
- Real-time verification API
- REST API for signup-time and enrichment-time checks, with a published 99.9 percent uptime figure and a five-minute connection claim.
- Signup form protection
- Verify new subscribers as they are added so temporary and invalid addresses never enter the list in the first place.
- ESP import and export
- Pull lists directly from major providers and push the cleaned result back rather than shuttling CSVs by hand.
Integrations and developer surface
Enough coverage for the small-business stack, without pretending to be a platform.- Forty-plus ready-to-use integrations
- Native connections to the major email service providers and marketing platforms, which is the practical requirement for list-based work.
- REST API with SDKs
- Published API documentation with SDK references, self-serve keys, and no sales gate on access.
- Published uptime figure
- A 99.9 percent API uptime claim, published rather than contractually guaranteed with an SLA.
- Direct ESP import and cleaned-list export
- Lists can be pulled from a connected provider and the cleaned result pushed back, so hygiene does not depend on someone remembering to re-upload a CSV.
- No contracts or setup fees
- Every purchase is a one-time credit block with no subscription, no minimum term, and no onboarding charge attached.
- Free EmailAcademy PRO
- A deliverability education programme bundled at no cost, which is unusual for a vendor at this price point and doubles as onboarding.
Use cases
4 documentedAgency cleaning a million-row client database
A client hands over three years of accumulated contacts and the budget for hygiene is a few hundred dollars, not several thousand.
One million credits cost $449, which is $0.000449 per address, and the risky rows cost nothing at all, so the effective bill lands below even that. The same job at ZeroBounce is $3,199.
B2B marketer facing a large catch-all bucket
A third of the list sits on accept-all domains and the alternative is deleting real prospects or gambling the sending domain.
Built-in resolution converts 30 to 40 percent of those addresses into definite verdicts at no extra credit cost, and the rest stay free because risky results are not billed.
Newsletter operator whose bounce rate crept up
The list has been growing for two years without hygiene and the ESP has started warning about bounce rates.
A one-off clean plus EverClean's daily re-verification keeps the account permanently below the ESP's threshold, and the 4 percent money-back guarantee puts the vendor's money behind the claim.
Developer adding verification at signup
Fake and disposable addresses are polluting the user table, and the budget for a verification API is close to zero.
The real-time API connects in minutes, credits never expire so a small prepaid block lasts as long as it lasts, and disposable-domain detection blocks the worst signups at the form.
Pricing
from $39 for 10,000 credits, or $0.0039 per emailPrepaid credits only, sold as one-time packages on a published volume ladder, with no subscription, no contract, and no expiry. Billing applies to good and bad results only.
| Plan | Price | Includes |
|---|---|---|
| Starter volumes | $39 to $89 one-time credit purchase |
The 10,000 pack is the entry point; there is no smaller paid package. |
| Growth volumes | $149 to $449 one-time credit purchase |
The jump from 100,000 to 500,000 is the steepest discount on the ladder; buying up is often cheaper per usable answer than buying twice. |
| Bulk volumes | $799 to $8,499 one-time credit purchase |
Volume pricing above 50 million is quoted; everything up to it is self-serve from the pricing page. |
Add-ons
- Auto top-up (Free to enable): Adds 10 percent extra credits on every payment, manual or automatic.
- Million Ever Green (Automatic): One million free credits for every five million purchased, counting historical payments.
- EverClean (Consumes standard credits): Daily automated re-verification connected to your email service provider.
Billing notes
- You are charged only for good and bad results. Risky results, meaning both unknowns and unresolved catch-alls, cost nothing, which is more generous than the unknown-only refunds offered by ZeroBounce, Bouncer, Emailable, and Reoon.
- Credits never expire, and there is no subscription, contract, or setup fee anywhere in the model.
- Auto top-up adds 10 percent extra credits on every payment, so the effective rate at 100,000 credits falls from $0.00149 to roughly $0.00135.
- The Million Ever Green promotion counts historical purchases, so an account that has bought three million credits gets the free million on reaching five million cumulatively rather than in a single order.
- The money-back guarantee is conditioned on hard bounce rate rather than on any accuracy metric: exceed 4 percent after cleaning and the last payment is refunded.
- At the three reference volumes the arithmetic is $39 for 10,000 ($0.0039), $149 for 100,000 ($0.00149), and $449 for one million ($0.000449), which is the cheapest ladder of any vendor reviewed here bar Reoon's daily-credit subscriptions.
Value assessment: On raw cost per usable answer, nothing in this comparison set beats MillionVerifier. Cleaning 100,000 addresses costs $149 against $400 at Bouncer, $649 at ZeroBounce, and $300 at BounceBan, and the not-charging-for-risky rule means the real bill on a B2B list is lower still. Add the 10 percent auto top-up bonus and the arithmetic gets slightly absurd. What you give up is everything that is not verification: no compliance evidence, no deliverability suite, no enterprise relationship, no meaningful vendor scale. For an email marketer or agency whose success metric is a clean list and a low bill, this is the correct default. For anyone whose success metric includes surviving a security questionnaire, it is not an option at any price.
Strengths & limitations
Strengths
- The cheapest published ladder among the general-purpose verifiers here: $39 per 10,000, $149 per 100,000, $449 per million, falling to $0.00017 per address at fifty million.
- Charges nothing for risky results, including unresolved catch-alls, which is the most generous billing policy in the category and materially lowers the real cost on B2B lists.
- Built-in catch-all resolution converts 30 to 40 percent of accept-all addresses into definite verdicts inside the normal pass, with no premium credit and no separate workflow.
- A plainly worded money-back guarantee: exceed 4 percent hard bounce after cleaning and the last payment is refunded, with the vendor explicitly claiming no small print.
- Credits never expire and there is no subscription, so unused balance is a stored asset rather than a deadline.
- Auto top-up adds 10 percent extra credits and the Million Ever Green promotion adds a million free per five million bought, counting past purchases.
- EverClean, the real-time API, and the signup widget mean the same cheap credits cover one-off cleaning, continuous hygiene, and form-level protection.
Limitations
- No published security certifications at all: no SOC 2, no ISO 27001, no trust centre, no penetration test summary, no data residency statement.
- Public sources put the team at roughly four people, which is a real concentration risk for a service sitting in the path of your sending programme.
- No deliverability suite: no inbox placement testing, no blacklist monitoring, no DMARC reporting, no warmup, so this is one tool among several rather than a consolidation play.
- Catch-all resolution at 30 to 40 percent is a fraction of what BounceBan claims, so a list that lives or dies on the accept-all bucket may still need a specialist.
- The 99 percent accuracy claim is vendor-reported with no published methodology or independent audit behind it.
- The smallest paid package is 10,000 credits, so there is no cheap way to buy a few hundred verifications beyond the 100 free ones.
- The 99.9 percent uptime figure is published rather than contractual, and no SLA, status page commitment, or support response target is advertised.
Head-to-head comparisons
4 alternativesMillionVerifier vs ZeroBounce
from $0 for 100 credits a month, then $39 for 2,000 pay-as-you-go credits or $99 a month for ZeroBounce ONEThe clearest price-versus-assurance fork in the category. ZeroBounce charges $649 for the 100,000 addresses MillionVerifier charges $149 for, and in exchange offers SOC 2 Type 2, ISO 27001, HIPAA, its own data centre, EU routing, and a full deliverability suite. If nobody is auditing your vendor choices, MillionVerifier is four times better value for the same core job. If somebody is, ZeroBounce is the only one of the two that can answer.
Full MillionVerifier vs ZeroBounce comparisonMillionVerifier vs BounceBan
from $34 for 10,000 credits on subscription ($40 pay-as-you-go), with unlimited free single verificationsBoth attack catch-alls, at very different intensities. MillionVerifier resolves 30 to 40 percent of them inside a standard credit and does not charge for the rest; BounceBan claims 85 to 95 percent resolution at roughly twice the per-credit price. Use MillionVerifier as the everyday cleaner and reach for BounceBan when a specific high-value accept-all segment justifies the premium. Many outbound teams reasonably run both.
Full MillionVerifier vs BounceBan comparisonMillionVerifier vs DeBounce
from $15 for 5,000 credits, falling to about $0.00044 per check at five millionDeBounce is the nearest competitor on both price and philosophy: $135 for 100,000 and $750 for a million against MillionVerifier's $149 and $449, with a detailed 97.5 percent deliverability guarantee that pays out in graded credits. The differences are that DeBounce charges 10 credits for a catch-all validation where MillionVerifier includes it, and MillionVerifier gets much cheaper above half a million. Take DeBounce for its documented guarantee mechanics and richer feature list; take MillionVerifier for large volumes and free risky results.
Full MillionVerifier vs DeBounce comparisonMillionVerifier vs Reoon Email Verifier
from $0 for 600 verifications a month, then $11.90 for 10,000 instant credits or $9 a month for 500 credits a dayReoon undercuts MillionVerifier at small volumes ($11.90 for 10,000 against $39) and on daily-credit subscriptions from $9 a month, and it also refunds unknowns. MillionVerifier wins above roughly half a million credits ($449 per million against Reoon's $960) and offers the stronger guarantee. Reoon for small and mid-size continuous verification on the tightest budget; MillionVerifier for bulk cleaning at scale.
Full MillionVerifier vs Reoon Email Verifier comparisonImplementation & onboarding
- Setup time
- Ten minutes. Create an account, take the 100 free credits, upload a file or connect an ESP. The API is documented as a five-minute connection and self-serve keys mean no waiting on anybody.
- Learning curve
- Minimal. The result vocabulary is good, bad, and risky, which is deliberately simpler than the multi-status taxonomies of ZeroBounce or Emailable, and the download splits into the files you actually need. The bundled EmailAcademy PRO covers the deliverability context for teams new to this.
- Onboarding
- Entirely self-serve with no sales contact up to fifty million credits. There is no demo gate, no contract, and no setup fee. Volume pricing above fifty million is the only quoted case.
- Migration notes
- Verification results do not transfer between vendors, so migration is a matter of policy rather than data. Two things change when you arrive: risky rows stop costing money, so your effective spend drops below the naive row-count estimate, and catch-alls that other vendors returned as unknown will partly arrive as valid or invalid instead, which means any CRM automation keyed on an unknown status needs rewriting. Set up auto top-up on arrival for the 10 percent credit bonus.
Platform, API & security
- Platforms
- Web applicationREST API with SDKsReal-time signup widgetEverClean ESP connector40-plus integrations
- API
- REST API for real-time and bulk verification with published documentation and SDK references, self-serve keys, and a stated 99.9 percent uptime. No contractual SLA or published rate limits.
- Compliance
- No certifications published; the company states general GDPR-aware handling but publishes no SOC 2, ISO 27001, or audit evidence
- Data residency
- Not published. The operating company is Hungarian, which places it inside the EU, but no residency commitment is stated.
- SSO
- Not offered.
- Security notes
- This is the weakest area of the product. There is no trust centre, no published penetration test, no stated data retention window for uploaded lists, and no certification of any kind. Buyers who upload customer email addresses under a data processing agreement should request one directly and read it before committing, because the website does not answer these questions.
Support & resources
- Channels
- Email supportHelp centre
- Documentation
- Help centre covering account, verification, EverClean, and integrations, plus REST API documentation with SDK references.
- Community
- No forum. The company bundles a free deliverability course, EmailAcademy PRO, which serves as the main educational resource.
Company
- Founded
- 2016
- Headquarters
- Hungary, operated by GBD Software as a Service
- Ownership
- Bootstrapped and privately held; no outside investment
- Founders
- Tamas Szabo
- Employees
- Approximately 4 (public estimates, 2026)
- Funding
- Self-funded with no disclosed venture or private equity investment.
Timeline
- 2016Founded in Hungary by Tamas Szabo as a bulk email verification service built around aggressive credit pricing.
- 2019Adds the real-time verification API and signup-form protection, extending beyond one-off list cleaning.
- 2021Launches EverClean for automated daily re-verification connected directly to email service providers.
- 2023Introduces the money-back guarantee tied to a 4 percent hard bounce threshold, and the policy of never charging for risky results.
- 2025Ships built-in catch-all resolution inside the standard verification pass, claiming 30 to 40 percent conversion of accept-all addresses at no extra credit cost.
- 2026Publishes a revised volume ladder running from $39 for 10,000 credits to $8,499 for fifty million, with auto top-up and Million Ever Green credit bonuses.
Integrations
- More than 40 ready-to-use integrations
- Mailchimp
- HubSpot
- ActiveCampaign
- Brevo
- Klaviyo
- MailerLite
- EverClean ESP connector for daily re-verification
- Real-time verification API
- Signup form widget
Frequently asked questions
10 questionsWhat is MillionVerifier?
MillionVerifier is a bulk email verification service founded in Hungary in 2016. It cleans lists, verifies addresses in real time through an API, protects signup forms, and re-verifies connected email service provider lists daily through EverClean. It is bootstrapped, run by a very small team, and competes almost entirely on price per usable verification.
How much does MillionVerifier cost per email?
The published ladder is $39 for 10,000 credits ($0.0039 each), $59 for 25,000, $89 for 50,000, $149 for 100,000 ($0.00149 each), $299 for 500,000, $449 for one million ($0.000449 each), $1,599 for five million, and $8,499 for fifty million, which works out to $0.00017 per address. Credits never expire and there is no subscription.
Does MillionVerifier charge for catch-all and unknown results?
No, and this is its most distinctive policy. You pay only for good and bad emails. Risky results, which include both unknowns and unresolved catch-alls, cost nothing. Several competitors refund unknowns; MillionVerifier is the only vendor in this comparison set that also declines to charge for catch-alls, which on a B2B list can be a quarter of the file.
How does MillionVerifier handle catch-all addresses?
It attempts to resolve them rather than simply labelling them. The engine tests whether a mailbox exists behind an accept-all server and, according to the vendor, converts 30 to 40 percent of catch-alls into definitive valid or invalid results. That resolution costs one standard credit, not a premium one, and resolved addresses appear in the normal good and bad download columns. Addresses it cannot resolve stay risky and are not billed.
What is the MillionVerifier guarantee?
If your hard bounce rate after verification exceeds 4 percent, the company refunds your last payment. The vendor describes it as a real money-back guarantee with no small print and no gatekeeping, which is plainer language than DeBounce's graded credit refunds or Bouncer's 72-hour bounce window, though it is also less specific about the qualifying conditions.
Do MillionVerifier credits expire?
No. Credits are a one-time purchase with no expiry date, no monthly clock, and no contract. Enabling auto top-up adds 10 percent extra credits on every payment, and the Million Ever Green promotion adds one million free credits for every five million purchased across the account's lifetime, counting past payments.
Is MillionVerifier secure and GDPR compliant?
This is the product's weakest area. No SOC 2 report, ISO 27001 certificate, trust centre, penetration test summary, or data retention window is published, and no data residency commitment is made, though the operating company is Hungarian and therefore EU-based. If you are uploading customer data under a processing agreement, request the DPA directly and read it, because the website will not answer the question for you.
Is there a free plan?
You get 100 free credits on signup with no credit card, plus 100 free checks in the single-address Email Checker. There is no recurring free allowance of the kind ZeroBounce or Reoon offer, so treat this as an evaluation budget rather than an operating one.
How does MillionVerifier compare with ZeroBounce on price?
At 100,000 addresses MillionVerifier is $149 and ZeroBounce is $649. At one million it is $449 against $3,199. Both never expire credits and both decline to charge for unknowns, but only MillionVerifier also gives you catch-alls free. What ZeroBounce provides for the difference is SOC 2 Type 2, ISO 27001, HIPAA, owned data centre infrastructure, EU or US routing, and an entire deliverability suite.
Who runs MillionVerifier?
It was founded in 2016 by Tamas Szabo and is operated from Hungary under GBD Software as a Service. It is bootstrapped with no outside investment, and public estimates put the headcount at around four people. That is remarkable operating leverage and also the main non-price consideration when choosing it.
Editorial verdict
MillionVerifier wins the argument it chose to have. On cost per usable answer it is the cheapest credible verifier here, and the two policies behind that, never charging for risky results and resolving 30 to 40 percent of catch-alls inside a standard credit, matter more on a real B2B list than the headline rate does. Add non-expiring credits, a 10 percent auto top-up bonus, and a money-back guarantee written in one sentence, and the value case against ZeroBounce or NeverBounce is not close. The counterweight is everything the company chose not to build: no certifications, no trust centre, no residency commitment, no deliverability suite, and roughly four people behind the whole operation. If you are an email marketer, agency, or outbound team cleaning lists and answering to nobody's security questionnaire, buy this and spend the savings on sending. If your procurement process has a checklist, this will not clear it, and you should not pretend otherwise.
Written by the SaaSTracker editorial team. Awards, when shown, are judged against the published criteria in our methodology.
Awards & badges
1 heldMillionVerifier holds 1 award from the SaaSTracker editorial program. Badges may be displayed by the vendor; each embed links back to this profile.
Best Value · Email Verification
“Four people, no investors, and the cheapest honest credit in the category.”
<a href="https://saastracker.org/products/millionverifier"><img src="https://saastracker.org/badges/embed/millionverifier/best-value-summer-2026.svg" width="180" height="180" alt="MillionVerifier: Best Value, Email Verification. SaaSTracker Summer 2026 Awards." /></a>
