European Alternatives to ZeroBounce
Looking for a European alternative to ZeroBounce? ZeroBounce's terms of use name a provider address in Santa Barbara, California, and state that the agreement is governed by the laws of the State of Nevada. The company says it participates in the EU-U.S., UK and Swiss-U.S. Data Privacy Frameworks, and its home page offers 100 free credits.
The European tools below verify bulk lists and real-time sign-ups under the law of Poland, Germany, Italy, Slovakia, France, the UK and the Netherlands, and most publish their prices openly. ZeroBounce is broader, with warmup, DMARC monitoring, blacklist monitoring, inbox placement tests and an email finder in one subscription, so the swap fits teams that mainly need verification.
How we rank these tools — 4-step process
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1
European ownership, verified
The company is headquartered and incorporated in the EU, EEA, the UK, Switzerland or Israel, and processes customer data in Europe or Israel. A US parent company disqualifies a tool from this page regardless of where its servers are.
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2
Category fit and hands-on review
What the tool actually does, who it suits, and where it falls short — checked against the vendor’s own documentation, changelog and pricing page rather than its marketing copy.
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3
Compliance and pricing check
GDPR posture, hosting location and the prices quoted on this page are verified against the vendor’s public pricing before publication, and re-checked when we revisit the category.
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4
Position on this page
Placement on this page can be paid, and that can affect which tools appear here and the order they appear in. It never buys a good review: a tool that fails the checks above is not here at any price, and payment does not change the shortcomings we write about. A vendor can ask us to correct a factual error — not to remove a criticism.
Vendors can pay for visibility on this page. It never changes what an entry says about a product, including the criticism, and we earn nothing when you click through to a vendor. Vendors can pay for more visibility, higher up on the review pages; it never affects which tools are listed. Editorial policy
11 European Alternatives to ZeroBounce
EmailListVerify
Bratislava bulk verifier priced in euros per address
Bouncer
Wroclaw verification service with servers in Frankfurt
Verifalia
Italian list cleaning and real-time API with 23 billing currencies
Byteplant Email-Validator
German email checker with 1,000 free checks and EUR pricing
Email Hippo
Cornish email verification with bulk and real-time API products
MailTester
Belgian verifier that adds inbox placement and blacklist checks
Syvel
French API for disposable and risky address detection
StopBouncing
Dutch pay-as-you-go verifier from EUR 18 per 10,000 emails
Mailjet
French email platform with EU-based list verifications
Mailboxlayer
Vienna email validation API with a free request allowance
Loqate
Chester data quality platform with a per-lookup email check
Key takeaways
- ZeroBounce contracts through Hertza L.L.C., a Nevada company in Santa Barbara, under Nevada law with an arbitration provision.
- ZeroBounce says it participates in the EU-U.S., UK and Swiss-U.S. Data Privacy Frameworks, and its privacy policy was last updated on 30 June 2026.
- EmailListVerify (Slovakia) charges EUR 27 once for 10,000 verifications, and StopBouncing (Netherlands) charges EUR 18 for the same volume.
- MailTester (Belgium) is the European verifier on this page that also sells inbox placement reports and blacklist monitors, the closest match to ZeroBounce's deliverability products.
- None of the eleven European tools on this page sells a warmup product on the pages we read.
Why people leave ZeroBounce
ZeroBounce is an email verification service that started as a list cleaner and has grown into a deliverability suite. Its menu covers email validation, scoring, an email finder, email activity data, warmup, inbox placement tests, server testing, blacklist monitoring, a DMARC monitor and a deliverability dashboard. A team that only wanted to remove dead addresses before a campaign now reads a catalogue of products around that single job.
The contract behind that catalogue is American. ZeroBounce's terms of use name Hertza L.L.C., doing business as ZeroBounce, a Nevada limited liability company with its principal place of business in Santa Barbara, California. The agreement is governed by Nevada law and contains an arbitration provision, so a dispute with a European customer is settled under rules the customer did not choose.
People who look for a replacement usually have one of two reasons. Some are compliance owners who must explain why a list of customer addresses sits with a US processor relying on a Data Privacy Framework certification. Others are buyers who read the price page, see the credit model, and wonder whether they need a deliverability suite at all when the job is a single clean-up before each send.
- The contracting party is a Nevada company with Nevada law and arbitration The terms of use put the agreement between you and Hertza L.L.C. in Nevada, with Nevada law and an arbitration clause. They also state that the service is provided "as is" and disclaim any indemnification for claims caused by inaccurate results. A European vendor sells under a national law you can read in your own language and under a court you can reach without an arbitrator.
- Transfers rest on a framework certification ZeroBounce says in its privacy policy, last updated on 30 June 2026, that it takes part in the EU-U.S. Data Privacy Framework, the UK Extension and the Swiss-U.S. framework. That is a recognised transfer basis, but it rests on an adequacy decision for the United States, so a cautious data protection officer checks whether it still applies when the contract is signed.
- A verification job comes bundled with products you may not use Warmup, DMARC monitoring, inbox placement tests, an email finder and consulting sit in the same navigation as plain validation. The vendor sells them as one ecosystem. If your need is a cleaned list before each newsletter, you are reading a price page designed for the larger suite, and several European tools below sell the single job on its own.
- The accuracy promise is a vendor claim with a formula attached ZeroBounce states that it guarantees 99.6% accuracy in writing, backed by what it calls a 5x money-back formula. We did not test it, and the same terms disclaim indemnification for inaccurate results. Read the exact conditions before you let a guarantee decide the purchase, and ask each European vendor for its own wording too.
What you have to replace, not just match
Decide first which ZeroBounce products you actually use. Bulk validation and the real-time API map to nearly every tool on this page. Scoring and the email finder have a smaller set of equivalents. Warmup and the deliverability dashboard have no equivalent among the verifiers here, so those jobs need a separate deliverability product or a neighbouring category.
Count your integrations next. ZeroBounce connects to CRMs and sending platforms, and the verification step often sits inside an automation that calls its API. Each call needs a new endpoint, a new key and a mapping of result codes such as valid, invalid, catch-all and unknown to the status names your CRM expects. Plan an afternoon per integration, not a minute.
Finally, check the history in your account. Past validation reports, suppression lists and credit balances live in ZeroBounce. Download the reports you need for audit, use up or ask about unused credits, and note which lists you re-verify on a schedule so that the new vendor inherits the same rhythm.
The alternatives compared
| Position | Tool | Headquarters | Pricing | Jurisdiction |
|---|---|---|---|---|
| #1 | EmailListVerify | Bratislava, Slovakia | Prices in EUR; minimum purchase 1,000 credits; 10,000 credits EUR 27 one-off (EUR 0.0027 per address); the same 10,000 credits on a monthly plan EUR 25; 100 free verifications | EU (Slovakia) |
| #2 | Bouncer | Wroclaw, Poland | Pay as you go in USD from 1,000 credits at USD 8; 5,000 for USD 35; 10,000 for USD 60; 50,000 for USD 250; 100,000 for USD 400; 1,000,000 for USD 2,000; credits never expire; monthly subscription also offered | EU (Poland) |
| #3 | Verifalia | Padova, Italy | Pay-as-you-go credit packs that never expire (1 credit = 1 standard verification) and monthly, quarterly (save 5%) or yearly (save 10%) plans; billing currencies include EUR, GBP and CHF; amounts not shown in the text we read | EU (Italy) |
| #4 | Byteplant Email-Validator | Neuendettelsau, Germany | 1,000 free email checks; one-off and monthly options with a EUR or USD switch; credits never expire; money-back guarantee; amounts not shown in the text we read | EU (Germany) |
| #5 | Email Hippo | Launceston, United Kingdom | From USD 9.88 a month, subscription or pay as you go; 100 free checks; MORE covers 1,000 to 1,000,000 checks a month online, higher volumes via sales | United Kingdom (adequacy decision, outside the EEA) |
| #6 | MailTester | Beerst, Belgium | Pay as you go in USD: 5K credits USD 19, 50K USD 79, 1M USD 499, 10M USD 2,999; subscriptions from USD 39 a month; yearly billing 30% off; 100 free credits; credits never expire | EU (Belgium) |
| #7 | Syvel | France (city not shown), France | Free EUR 0 with 100 requests a month; Starter EUR 9 for 1,000; Pro EUR 49 for 10,000; Business EUR 199 for 100,000 requests a month; prices exclude VAT | EU (France) |
| #8 | StopBouncing | Netherlands (address not shown), Netherlands | Euro credit packs: 10,000 for EUR 18; 25,000 for EUR 35; 50,000 for EUR 52; 100,000 for EUR 99; 250,000 for EUR 180; 1,000,000 for EUR 600; no subscription, no expiry; 100 free verifications | EU (Netherlands) |
| #9 | Mailjet | Paris, France | Free tier / from about €15/month | EU (France) |
| #10 | Mailboxlayer | Vienna, Austria | Free plan; the home page offers 1,000 free requests a month and subscriptions from USD 9.99; the pricing page lists Basic at USD 14.99 a month (5,000 requests) and Professional Plus at USD 74.99 a month (50,000 requests) | EU (Austria) |
| #11 | Loqate | Chester, United Kingdom | Per lookup: email validation 7.7c, 6.9c and 5.6c across three tiers labelled EUR 75, EUR 150 and EUR 300; 45-day free trial; bespoke plans on request | United Kingdom (adequacy decision, outside the EEA) |
How each alternative compares to ZeroBounce
Best for: Marketers who clean one list before each campaign and want a euro invoice
EmailListVerify is run by EmailListVerify s. r. o. in Bratislava, with company number and VAT ID on its site and Slovak law in its terms. You upload a TXT, CSV or XLSX file and get a result by email, with checks for spam traps, disposable addresses and catch-all domains. It also has an email finder API and an MCP server.
Against ZeroBounce the story is price and scope. Ten thousand credits cost EUR 27 once, or EUR 25 on a monthly plan, from a 1,000-credit minimum. There is no written accuracy guarantee on the pages we read, and no warmup or DMARC product. The privacy policy names Amazon Web Services, without a region.
What EmailListVerify does better than ZeroBounce
- Slovak contracting entity under Slovak law instead of Nevada law and arbitration
- Euro prices with a published per-address rate
- Accepts XLSX uploads next to TXT and CSV
- Monthly plan available next to one-off credits
Where EmailListVerify is a step down from ZeroBounce
- No written accuracy guarantee found, where ZeroBounce publishes one
- No warmup product or blacklist monitoring
- Server region not stated
Standout against ZeroBounce. It is the lowest-friction swap for anyone who only ever pressed the bulk upload button.
Best for: Teams that want bulk plus a sign-up form shield on German servers
Bouncer is run by Bouncer Sp. z o.o. in Wroclaw and names Frankfurt as the location of its servers in its privacy policy. Besides the bulk tool and API it sells Shield for sign-up forms, AutoClean for CRMs, a toxicity check, data enrichment and a deliverability kit with inbox placement and blocklist checks.
That list overlaps with ZeroBounce more than any other verifier here, except that Bouncer prices in dollars: USD 8 for 1,000 credits and USD 60 for 10,000, with no expiry. Its legal pages carry dates from 2018 and 2019, and we did not read the wording of its accuracy guarantee, so compare that clause yourself.
What Bouncer does better than ZeroBounce
- Polish company with a stated Frankfurt server location
- Form-level Shield and CRM AutoClean next to bulk checks
- Credits never expire
- Prices for volumes up to 1,000,000 are published
Where Bouncer is a step down from ZeroBounce
- Dollar pricing rather than euros
- Legal pages dated 2018 and 2019
- No warmup or DMARC monitor found
Standout against ZeroBounce. It pairs a named EU server location with the widest product range among the verifiers here.
Best for: Procurement-led teams that need legal documents before the first upload
Verifalia is the trading name of Cobisi Research SRL in Padova, and the site has been copyrighted since 2005. Its terms of service incorporate a Data Processing Addendum and a Service Level Agreement, and the privacy policy gives a data protection officer contact. Credits never expire, and plans bill monthly, quarterly or yearly in currencies that include EUR, GBP and CHF.
Compared with ZeroBounce, Verifalia verifies and stops there, with list cleaning, a real-time API and a widget. The vendor claims 99% accuracy. Two points to check: the footer and the legal pages show different addresses and VAT IDs, and the price amounts were not visible in the text we read.
What Verifalia does better than ZeroBounce
- DPA and SLA are part of the published terms
- Billing in many currencies, including EUR
- Italian law instead of Nevada law and arbitration
- Credit packs that never expire
Where Verifalia is a step down from ZeroBounce
- Two addresses and two VAT IDs on different pages
- No warmup, DMARC or blacklist products
- Server location not stated
Standout against ZeroBounce. It is the only verifier here whose terms bundle both a DPA and an SLA.
Best for: German-speaking companies that want a local GmbH and phone support
Email-Validator is sold by Byteplant GmbH in Neuendettelsau, with an imprint that lists the Ansbach commercial register and a VAT ID. A new account can check 1,000 addresses free without payment details. The FAQ says uploaded files are deleted after 14 days, and the vendor reaches customers by email, phone and chat.
Against ZeroBounce the difference is a narrow remit. Byteplant checks syntax, MX records and an SMTP handshake, and offers address and phone validators from the same company, but no warmup or inbox tests. Price amounts load by script and we could not read them, and no server region is stated.
What Byteplant Email-Validator does better than ZeroBounce
- Ten times the free allowance of ZeroBounce's 100 credits
- German company with a full imprint and register number
- EUR or USD switch on the price page
- DPA and TOM documents offered
Where Byteplant Email-Validator is a step down from ZeroBounce
- Server region not stated, only that processing follows GDPR
- Price amounts not readable without script
- No deliverability suite
Standout against ZeroBounce. It gives 1,000 free checks, the largest free allowance among the tools here.
Best for: Teams that want list cleaning and form risk checks sold as separate products
Email Hippo Limited is registered in England and runs from Launceston, in Cornwall. CORE cleans a CSV in bulk, MORE verifies in real time over an API, and INSIGHT, ASSESS and WHOIS add enrichment, fraud signals and domain lookups. Verification starts at USD 9.88 a month, and 100 free checks need no card.
The UK has an EU adequacy decision, so the legal position is workable, but it sits outside the EEA and under English courts. Against ZeroBounce, a team using both bulk and API pays for two products, and the pages we read show no accuracy guarantee and no data location.
What Email Hippo does better than ZeroBounce
- English law and courts instead of Nevada law and arbitration
- Separate bulk and API products, so you buy only one
- Signals for fraud and domain risk next to verification
- Pay-as-you-go option
Where Email Hippo is a step down from ZeroBounce
- UK, not EU, and reliant on an adequacy decision
- Dollar prices and a US toll-free number on the site
- Bulk and API sold apart, which raises cost for teams needing both
Standout against ZeroBounce. It splits bulk, real-time and risk checks into distinct products, which suits teams that need only one.
Best for: Small senders who want verification, inbox placement tests and blacklist alerts together
MailTester is operated by Edustria V.O.F., a Belgian partnership in Beerst, under Belgian law. Beyond verification it sells inbox placement reports that show whether a campaign lands in the inbox, promotions or spam, and blacklist monitors, with one to 25 monitors depending on the tier. Credits never expire and 100 are free.
This is the overlap with ZeroBounce that matters. Credit packs run from USD 19 for 5,000 to USD 2,999 for 10,000,000, and subscriptions start at USD 39 a month. We found no warmup or DMARC product, no ISO or SOC certificate, no company number and no hosting location.
What MailTester does better than ZeroBounce
- Inbox placement and blacklist monitors included in plans
- Belgian law instead of Nevada law and arbitration
- Subscriptions with a 30% discount on yearly billing
- Credits that never expire
Where MailTester is a step down from ZeroBounce
- No ISO or SOC certification found, where ZeroBounce claims both
- Partnership with no company number shown
- Dollar pricing and no hosting location
Standout against ZeroBounce. It is the one verifier here whose plans include inbox placement reports and blacklist monitors.
Best for: Developers who need to block fake sign-ups through an API hosted in France
Syvel is the trade name of RCQD Labs, a French sole trader with a SIRET number, and its sales terms name Scaleway in France for application servers and the database. The API analyses the domain through MX, SPF, DMARC and domain age, then returns a risk score between 0 and 100 with typo, role and disposable flags.
It replaces only the real-time part of ZeroBounce. We found no bulk upload and no mailbox-level SMTP check. Plans are priced in euros: EUR 9 for 1,000 requests, EUR 49 for 10,000 and EUR 199 for 100,000 a month, excluding VAT, and the free tier covers 100 requests.
What Syvel does better than ZeroBounce
- Stated French hosting at Scaleway
- Plans priced in euros, with a DPA
- Privacy mode that hashes the address
- Risk score that goes beyond valid or invalid
Where Syvel is a step down from ZeroBounce
- No bulk upload or mailbox-level check found
- A sole trader, so liability and continuity differ from a company
- Google Analytics on the site
Standout against ZeroBounce. It is the only tool here that publishes where the application and database run: Scaleway in France.
Best for: Occasional list cleaning with a euro price, no subscription and no expiry
StopBouncing is registered in the Netherlands under KVK 42125347, with Dutch law in its terms. Packs run from 10,000 credits for EUR 18 to 1,000,000 for EUR 600, there is no subscription, nothing expires, and 100 verifications are free. Crypto payments are accepted.
The weak point is transparency. The site markets EU hosting, yet the privacy policy names a Vercel region in Washington DC, and neither the legal form nor a street address appears in the text we read. Features stop at bulk checks and an API, with no deliverability tools.
What StopBouncing does better than ZeroBounce
- Lowest published euro price per 10,000 checks on this page
- No subscription and no expiry
- Dutch law and a KVK number
- Crypto payment as an option
Where StopBouncing is a step down from ZeroBounce
- Hosting claim contradicts the privacy policy
- No legal form or street address in the text read
- No integrations or deliverability products found
Standout against ZeroBounce. It sells verification at EUR 18 per 10,000, the cheapest published pack here.
Best for: Existing Mailjet senders who want list checks without a separate vendor
Mailjet was founded in Paris in 2010 and is now part of Sinch, a Swedish communications company. It is an email sending platform with an API, a drag-and-drop builder and campaign tools, and its blog describes EU-based email validations for its customers. Mailjet therefore answers a different question than ZeroBounce: where you send from, not only whom you send to.
Verification is a feature of the platform, not a standalone product. We did not read the verification pricing or the exact contracting entity for it, and the terms also mention Sinch Email entities in Texas. The tool page lists a free tier and plans from €15 a month for sending.
What Mailjet does better than ZeroBounce
- Verification and sending under one French-founded account
- Free tier and a euro price for the sending plan
- API and transactional email from the same vendor
- No second integration if you already send through Mailjet
Where Mailjet is a step down from ZeroBounce
- Not a stand-alone verifier for lists you send elsewhere
- Sinch, with entities in Texas, sits behind the brand
- Verification price and entity details not confirmed
Standout against ZeroBounce. It is the only option here that checks addresses inside the platform that sends the mail.
Best for: Developers who need one JSON endpoint for form validation
Mailboxlayer is operated by apilayer Data Products GmbH in Vienna, registered as FN 532531i. One REST call returns a quality score plus flags for syntax, MX records, SMTP check, catch-all, role, disposable and free providers, and a did-you-mean suggestion. The provider database is said to be updated daily.
There is no list-cleaning interface, warmup or monitoring, so it replaces only ZeroBounce's API. The home page offers 1,000 free requests and plans from USD 9.99, while the pricing page lists USD 14.99 for 5,000 and USD 74.99 for 50,000, so check the current figure. The terms were last modified in 2018.
What Mailboxlayer does better than ZeroBounce
- Austrian GmbH with a commercial register number
- Free plan with a monthly request allowance
- Quality score and typo suggestions in the same response
- Low entry price
Where Mailboxlayer is a step down from ZeroBounce
- No bulk upload tool
- Conflicting prices between pages and terms dated 2018
- Owner of apilayer not stated on the pages read
Standout against ZeroBounce. It condenses the whole check into one JSON response with a score and a typo suggestion.
Best for: Companies that already validate postal addresses and phones and want emails on the same contract
Loqate is a GBG product from GB Group PLC in Chester, a UK public company whose registration and VAT numbers are in the German impressum. Email validation runs in real time or in batch and sits beside address capture, address verification, phone validation and geocoding. A 45-day free trial is offered.
Priced per lookup, email validation costs 7.7c, 6.9c and 5.6c across three tiers labelled EUR 75, EUR 150 and EUR 300, many times the price of a credit pack at a bulk verifier. It makes sense only if you already pay for the other data products. GBG lists US subsidiaries, so confirm which entity signs.
What Loqate does better than ZeroBounce
- UK public company with registration number published
- Address, phone and email checks in one contract
- Long free trial of 45 days
- Prices shown in euros on the Dutch page
Where Loqate is a step down from ZeroBounce
- Per-lookup price far above bulk credit packs
- US subsidiaries in the GBG group
- No list deliverability tools found
Standout against ZeroBounce. It is the one tool here that checks postal addresses, phone numbers and email under a single contract.
What actually breaks when you switch
The first break is the status mapping. ZeroBounce returns its own result categories, and every integration that reads them, from a CRM workflow to a sign-up script, has to be pointed at the new vendor's statuses. Catch-all and unknown results are where vendors differ most, so decide in advance whether you send to them, hold them back or re-verify.
The second break is money already spent. Unused ZeroBounce credits are a sunk balance, and prices are quoted per credit on a page we could not read in full, so ask for a statement before you switch. Run your current list through the new tool and compare the remove count with last month's ZeroBounce report. A big gap is a reason to ask both vendors why, not to assume one is wrong.
Is ZeroBounce allowed under GDPR for a European company?
It can be, and the vendor does not hide how. ZeroBounce certifies to the EU-U.S. Data Privacy Framework, which lets a European controller send personal data to it without extra transfer tools as long as the certification stays valid. The vendor also says it is GDPR-aligned.
The decision is therefore about risk appetite, not legality. If your records of processing already list US processors under the framework, ZeroBounce fits. If your policy asks for an EU processor under an EU contract, the European verifiers here remove the transfer question, although several of them also use US sub-processors, as their privacy policies show.
Do I need warmup and DMARC monitoring or only verification?
Verification removes addresses that will bounce. Warmup builds a reputation for a new sending domain, and DMARC monitoring shows who sends mail in your name. These are different problems, and a mailing programme with a stable domain and a clean list can run on verification alone.
Keep the suite if you start new domains regularly or if you have lost inbox placement before. Otherwise buy verification from a focused vendor and use a free DMARC and blacklist checker when you need a spot check. EmailListVerify publishes free DMARC, SPF and MX tools for this purpose.
Which one to pick
If your use is a bulk clean before each campaign, pick EmailListVerify or StopBouncing for euro prices, and Bouncer when you want a stated Frankfurt location. Choose Verifalia or Byteplant when legal paperwork or phone support matters more than price.
If you rely on ZeroBounce for deliverability, MailTester is the closest European match on inbox placement and blacklists, and warmup or DMARC monitoring needs a product from a neighbouring category. For forms only, Syvel or Mailboxlayer replace the API, and Loqate is for companies that already buy address data from GBG.
Frequently Asked Questions
For bulk list cleaning in euros, EmailListVerify from Bratislava and StopBouncing from the Netherlands. For servers in Frankfurt and a form-protection API, Bouncer from Wroclaw. For inbox placement tests next to verification, MailTester from Belgium. For legal documents with a DPA and SLA, Verifalia from Italy. For a plain sign-up API, Syvel from France or Mailboxlayer from Vienna.
The terms of use name Hertza L.L.C., doing business as ZeroBounce, a Nevada limited liability company with its principal place of business at 10 E. Yanonali St., Santa Barbara, California. The agreement is governed by the laws of the State of Nevada and includes an arbitration provision.
We did not find a server region on the pages we read. ZeroBounce describes its transfer basis instead: participation in the EU-U.S., UK and Swiss-U.S. Data Privacy Frameworks. If a European data location is a requirement, ask ZeroBounce in writing, and note that most European verifiers here do not state a region either; Bouncer (Frankfurt) and Syvel (Scaleway, France) do.
Yes, within limits. Byteplant Email-Validator gives 1,000 free checks, while EmailListVerify, StopBouncing, MailTester and Email Hippo each give 100 free checks or credits. ZeroBounce itself offers 100 free credits, so the free allowance only differs for Byteplant.
We have no independent accuracy test, and accuracy claims on this page are the vendors' own. ZeroBounce states 99.6%, Verifalia and MailTester state 99%, and Loqate states 97%. Run the same 1,000-address sample through two vendors before you commit and compare the unknown and catch-all counts.
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