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ZeroBounce logoZeroBounce review

Updated #1 in Email Infrastructure & Verificationzerobounce.net
ZeroBounce logo

#1ZeroBounce

zerobounce.net
27/100

ZeroBounce is an email validation service that removes invalid and risky addresses from lists, with add-ons including AI scoring, an email finder, warmup, inbox placement tests, and blacklist and DMARC monitoring.

Verdict: Independent users who report on ZeroBounce mostly describe it as an accurate, established verifier for list cleaning, but price is the recurring complaint and its accuracy is disputed on B2B lists, where one user says conservative risk scoring bins valid addresses. About two-thirds of the 49 Reddit mentions are promotional, including a one-day burst of near-identical posts pitching FilterBounce, DoYouMail and Mystrika as ZeroBounce replacements, repeated plugs for one cheaper verifier, and seeded Prospeo switching stories, so this rests on about ten independent opinions, most of them brief.

4 positive3 mixed3 negativeacross 10 rated independent comments

Astroturf check32 of 49 comments read as promotion or coordinated seeding and were excluded: unusually high promotional activity.

What users like

  • Several users who cleaned lists with it rate its accuracy as solid[1][2][3]
  • A six-month user singles out the real-time API as a strong point[1]
  • Users who moved off NeverBounce for Apollo-sourced lists found it somewhat better or 'decent', though not a complete fix for bounces[1][2]

What users complain about

  • Expensive: users call it pricey, and an early-stage team says the API pricing became too heavy[1][2]
  • Accuracy is contested on B2B data: one team left over low accuracy, and another says its conservative risk scoring pushes good startup addresses into the risky bucket[1][2]
  • Cleaned lists still produced bounces for users verifying Apollo leads[1][2]
  • A customer verifying a large HubSpot database says support treated them like a nuisance and is looking to replace it[1]

Best for

  • Marketers who want an established verifier and can absorb a higher per-email price
  • Routine cleaning of opt-in or older marketing lists

Skip it if

  • Early-stage teams on a tight verification budget
  • B2B lists heavy in startup or catch-all domains
PricingVendor-statedFrom $39

Free plan with 100 validation credits a month (business-domain signup). Pay-as-you-go from $39 for 2,000 credits. ZeroBounce ONE subscription from $99/mo for 10,000 credits, 20% off billed annually; over 1M credits is sales-led.

Source , checked 2026-10-14

In their own words

Been using ZeroBounce for about 6 months. Really solid accuracy and their real-time API is pretty sweet. Make sure you clean your list every 3-4 months and keep an eye on those engagement rates.
I've tried a few tools as well and found that tools like NeverBounce and ZeroBounce tend to give pretty accurate results. As for deliverability, make sure your email content is clean, avoid spammy language, and always use double opt-ins for better engagement.
Zerobounce has been working well for me. Its not completely free though (volume based).
I've had similar issues with NeverBounce when verifying email addresses from Apollo. It was frustrating to see a large portion of the list get filtered out, yet still experience bounces with the remaining emails. I started to question how effective the verification process was. I decided to try a few other services to see if they performed any better. I tested ZeroBounce and noticed a slight improvement in accuracy,…
Yeah, I’ve had the same issue with NeverBounce on Apollo lists. It often flags 30–50% as invalid, and even then, I still get bounces. Feels like over-filtering without actually solving the problem.Tried EmailListVerify and ZeroBounce too decent, but pricey and not perfect either. Recently tested VitaMail; it is much cheaper, like under $0.001/emailand pretty fast for bulk checks. Still evaluating accuracy, but worth…
Are there any reliable open source email verification tools or self hosted scripts that can handle SMTP level handshakes and catch all detection? ZeroBounce and NeverBounce are great but their minimum monthly commits and steep API pricing are getting way too heavy for an early stage project

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Frequently asked questions

Independent users who report on ZeroBounce mostly describe it as an accurate, established verifier for list cleaning, but price is the recurring complaint and its accuracy is disputed on B2B lists, where one user says conservative risk scoring bins valid addresses. About two-thirds of the 49 Reddit mentions are promotional, including a one-day burst of near-identical posts pitching FilterBounce, DoYouMail and Mystrika as ZeroBounce replacements, repeated plugs for one cheaper verifier, and seeded Prospeo switching stories, so this rests on about ten independent opinions, most of them brief. ZeroBounce scores 27/100 from 10 independent comments (4 positive, 3 mixed, 3 negative).

Evidence base: 49 independent comments kept from 54 that mention ZeroBounce, after removing vendor accounts, self-disclosed employees and founders, affiliate links, service pitches and repeat promoters. Methodology.