ZeroBounce (www.zerobounce.net) has a 4.6 out of 5 rating on OK.one, based on 68 user reviews collected here. It is listed under Electronics & Technology and its reputation is excellent. Praise is nearly unanimous, with 91% rating it 4 stars or higher; The business has replied to 100% of negative reviews. Last updated 2026-08-10.
What people say
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Peter Davies · 1 review · Experienced 2025-11-04 ·
★★★★★
Cool people - Smooth Operation
Cool people - just needed a one-off validate and to my surprise - I didn't need to read a manual.
I asked for advice from support at 10am Bangkok time, Vlad was there immediately, gave me a discount and walked me through it - as well as telling me about other options.
Reply from ZeroBounce2025-11-04
Thank you for reviewing ZeroBounce, Peter!
It was great to read your experience, and we're delighted that Vlad was able to help you and even provide you with a discount. How great!
ZeroBounce provides an excellent tool to validate email addresses, but when you use all of our tools, you'll even get better results.
Thank you for taking the time to provide us with your feedback.
The only thing cooler than our people - is you!
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Ava Taylor · 7 reviews · Experienced 2025-10-03 ·
★★★★★
I’ve used ZeroBounce to clean and…
I’ve used ZeroBounce to clean and validate large email lists, and it does exactly what it promises. The accuracy is solid, the dashboard is user-friendly, and once you connect the integrations, everything runs smoothly. Managing credits is straightforward, and support responds quickly. At first, I was a bit confused about how credits worked across multiple lists, but that was on me. After reading the guide, it all made sense. I cleaned a hotlist of about 40,000 contacts with no issues. Pricing is fair—not the cheapest—but it’s ideal for teams that prioritize reliable deliverability and clean data. Overall, ZeroBounce is reliable, dependable, and gets the job done without any unnecessary extras
Reply from ZeroBounce2025-10-15
Thank you, Ava!
We really appreciate your thoughtful review and the time you took to share your experience. It’s wonderful to hear that ZeroBounce has made managing and cleaning your large lists easier and that you’ve found our dashboard and integrations smooth to use.
We’re so glad it’s helping you achieve reliable deliverability. That’s exactly what we strive for!
We're always here for you!
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Johnny Apple · 1 review · Verified · Experienced 2025-10-13 ·
★★★★★
Clean list and smooth results
I’ve used ZeroBounce to clean and validate big email lists, and it does what it says. The accuracy is solid, the dashboard is easy to navigate, and once you connect the integrations, it works smoothly. Credits are simple to manage, and support gets back fast. At first, I got tripped up on how credits worked across multiple lists, but that was on me. Once I actually read the guide, it made sense, and I cleaned a Hotlist of about 40,000 contacts without any issues. Pricing is fair but not the lowest, so it’s best for teams that care about reliable deliverability and clean data. Overall, ZeroBounce is steady, dependable, and gets the job done without the fluff.
Reply from ZeroBounce2025-10-14
Thank you, Johnny!
We really appreciate your thoughtful feedback and the time you took to share your experience. It’s great to hear that ZeroBounce has been reliable and easy to use for your large lists, and that our support team was able to help quickly when needed.
We’re glad you’ve found the pricing fair for the accuracy and dependability we aim to deliver.
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Anton · 1 review · Verified · Experienced 2025-10-11 ·
★★★★★
Solid
I uploaded a few big lists that I’d collected over time, expecting the usual mess of false positives and “unknown” results. Instead, ZeroBounce cleaned them up with impressive accuracy. Deliverability improved almost immediately once I switched to using only their verified emails. The integration with Mailchimp and other platforms was seamless, which saved me hours of tedious work.
The part that really surprised me is how transparent they are about what each category means. You can tell someone actually thought about how marketers use this stuff in real life. I also like that their support team responds like actual humans, not robots sending canned replies.
It’s not the cheapest service out there, but when your reputation and sender score are on the line, it’s easily worth the price. If you care about keeping your email list healthy, ZeroBounce is the one to trust.
Reply from ZeroBounce2025-10-14
Thank you so much, Anton. This means a lot.
We’re thrilled to hear that ZeroBounce has helped improve your deliverability and made your workflow smoother.
Our team puts a lot of care into making sure every feature, from integrations to category explanations, truly supports real marketers like you.
We also take pride in providing support that feels human and helpful.
Your feedback reminds us why we do what we do, and we’re grateful you chose to trust us with your email lists.
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Ben · 1 review · Verified · Experienced 2025-10-10 ·
★★★★★
Successfully Reducing Failure Rates
We were getting loads of spoof signups and wasting money and reputation when our platform wasn't filtering them out. ZeroBounce has cleaned up both!
Reply from ZeroBounce2025-10-10
Thank you, Ben!
We’re so glad to hear that ZeroBounce has helped you cut down on spoof signups and protect both your budget and your sender reputation!
It’s wonderful knowing the platform is making such a difference for you, and we’re here anytime you need us.
ZeroBounce has been amazing for us. We send a lot of emails, and before using it, we had issues with high bounce rates and poor deliverability. After switching, the difference was clear right away — bounce rates dropped, open rates went up, and our sender reputation improved.
The API integration was super easy, and now every email gets verified in real time before it even leaves our system. I also like how accurate it is at catching disposable and role-based emails compared to other tools we tested.
Overall, ZeroBounce just works. It’s fast, reliable, and it’s made a huge impact on our email performance. Highly recommend it.
Reply from ZeroBounce2025-09-19
Thank you for the incredible feedback, Diogo! We’re so happy to hear how much of a difference ZeroBounce has made for your email performance.
It’s great that you saw results right away: lower bounce rates, better deliverability, and improved sender reputation are exactly what we aim to deliver. We’re also glad the API integration was smooth and that real-time verification is helping keep your lists clean.
We appreciate your trust and recommendation, and we’re here for you anytime you need us!
As an email markeing provider, we get lists from clients that need to be cleaned and updated. ZeroBounce has helped us save senderreputaion for many clients with their fast,easy to use mailing list cleaner and de-duping services. We use them on all client lists. Highly recommended.
Reply from ZeroBounce2025-09-15
Thanks for sharing this, Bob!
It’s great to hear how ZeroBounce has helped you protect your clients’ sender reputations and streamline list cleaning. We’re glad it’s become such a reliable part of your process.
Thanks for recommending us! We're always here for you.
This app does exactly what it "says on the tin". It has saved us hours of wasted time when checking older opt-in email marketing lists. It also allows us to manage our domain reputation in the one spot, again this makes our lives easier. We would recommend this service to anyone looking to better manage their online marketing emails in a more professional manner.
Reply from ZeroBounce2025-09-05
Thank you, Shane!
We’re so glad to hear ZeroBounce is saving you time and helping you manage both your lists and your domain reputation with ease.
We really appreciate your recommendation and are happy to be part of making your email marketing more efficient and professional.
Thanks for the thoughtful review!
