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... See more
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Review summary
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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 cl... See more
Company replied
ZeroBounce is a great service! We use it every year to clean up our mailing lists before sending out holiday cards. It is very easy to use, fast, and gives detailed and accurate results including a c... See more
I really appreciate the thorough reporting, which is also simple and easy to understand. They provide separate return files for each category as well as one complete file, making reintegration a breez... See more
Company replied
Company details
- #80 of 254 best companies in Business to Business Service
- #9 of 49 best companies in e-Commerce Solution Provider
- #4 of 20 best companies in Email Service Provider
- #3 of 54 best companies in Internet Service Provider
- #7 of 48 best companies in Media Company
- #5 of 37 best companies in Online Marketing Agency
About ZeroBounce
Written by the company
ZeroBounce is an email validation, deliverability and email finder platform helping more than 400,000+ businesses reduce bounces and land their emails in the inbox. We improve your connection with customers and prospects so you can make more sales with email.
ZeroBounce removes invalid email addresses, eliminates bounces, validates IP addresses and verifies key recipient demographics.
ZeroBounce also offers a suite of deliverability and list enhancement tools: an email server tester, an inbox placement tester and a blacklist monitoring tool. Activity Data, ZeroBounce's newest feature, identifies subscribers who've had email activity in the past year.
ZeroBounce removes invalid email addresses, eliminates bounces, validates IP addresses and verifies key recipient demographics.
ZeroBounce also offers a suite of deliverability and list enhancement tools: an email server tester, an inbox placement tester and a blacklist monitoring tool. Activity Data, ZeroBounce's newest feature, identifies subscribers who've had email activity in the past year.
ZeroBounce Gurantees an minimum of 99% Accuracy
Minimum Accuracy Is 99%
Other companies say it, we put it in writing. ZeroBounce, the leader in email validation, makes you the promise of cleaner and safer email lists.
We guarantee the following accuracy rates at a minimum:
96%+ Accuracy rates on AOL, Yahoo, and office 365 email accounts.
99% Accuracy rates on everything else.
How the Guarantee works:
If the accuracy rates are below these thresholds, we will refund 5 times the amount for each 1%. Let's say you have a 97% accuracy rate, which is 1% below the guaranteed threshold of (99%+ Accuracy rates on everything else). We will refund 5 x 1% (or 5%) of your total validation cost for those emails. If your accuracy rate is 2% below the guaranteed threshold, our refund will be of 10% of your costs. If it's 4% below, the refund will be 20%, and so on.
In order to qualify for the guarantee, the following conditions must be met:
You only email the _valid.csv and remove all toxic and disposable domains.
You email the list within 72 hours after cleaning.
Bounces must be invalid emails (Hard Bounces).
Bounces due to spam content, blacklisted IP's, technical Issues, Invalid Mail Configuration, throttling, etc do not qualify for the guarantee.
The minimum list size must be 1000 emails.
This list must be an opt-in list that you collected and not purchased from a 3rd party
You must provide an export of your full mailing of all emails you sent to and their bounce responses (the actual SMTP Codes of the bounces), not your email sender classifying it as a bounce.
Contact info
10 E Yanonali St, 93101, Santa Barbara, United States
- +18885009521
- support@zerobounce.net
- www.zerobounce.net
4.8
Excellent
2K reviews
Asks customers to review
This company invites their customers to review, whether positive or negative
Replied to 100% of negative reviews
Typically replies within 1 month
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ZB puts other email cleaners to shame
The quality of email verifications is excellent. I get lists "verified" elsewhere that are only 75% clean after ZB is done with them.
September 19, 2025
Reply from ZeroBounce
Thank you, Marek! We’re so glad to hear you’ve noticed the difference in quality with ZeroBounce. Accuracy is something we care about deeply, so knowing we’re helping you get cleaner lists than other services means a lot.
We’re here for you anytime, 24/7 and 365 days a year, if you ever need us!
Used ZeroBounce to clean lists of…
Used ZeroBounce to clean lists of investors from a business intelligence database. The ZB user experience is easy, with outputs that are approximately 97% accurate. In summary, ZB is well worth the money.
September 19, 2025
Reply from ZeroBounce
Thank you for sharing your experience, Kris! We’re glad to hear that ZeroBounce has been helpful for cleaning your investor lists and that you’ve found the platform easy to use and highly accurate.
We really appreciate your trust and kind words — it means a lot to us. We’re here 24/7, 365 days a year if you ever need anything!
ZeroBounce has been amazing for 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.
September 19, 2025
Reply from ZeroBounce
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!
Reliable Email Validator – Saves Time and Headaches! ⭐⭐⭐⭐⭐
ZeroBounce has been a game-changer for keeping my email lists clean. The platform is very easy to use, the results are fast, and the accuracy is impressive. Since I started using ZeroBounce, my deliverability rates have improved significantly, and I hardly get any bounces anymore.
Their customer support is friendly and quick to respond whenever I have questions. I also love how easily it integrates with other tools, which makes the process even more efficient.
Highly recommended for anyone serious about email marketing!
September 19, 2025
Reply from ZeroBounce
Thank you so much for the wonderful review, Viktor! We’re thrilled to hear how much ZeroBounce has helped improve your deliverability and reduce bounces.
It’s great to know the platform’s ease of use, speed, and accuracy are making a difference for you — and we’re especially glad our support team has been quick and friendly whenever you’ve needed help.
We appreciate your recommendation and are excited to keep supporting your email marketing success!
Essential tool for sending any volume…
Essential tool for sending any volume of emails. Very easy to use. When I've talked with email consultants they nod approvingly when I say we use ZB. We've tried 1 or 2 other services bundled in with other tools but didn't get the detail or the results ZB provides.
That said: if you're sending to B2B addresses you're more likely to get "catch-all" which basically means it's an unknown. (That's just how email works) We don't find all of the additional insight/data offered that helpful but hopefully that evolves. Support is fine, sometimes feels like one of us has misunderstood but we get there soon enough and they are responsive.
September 19, 2025
Reply from ZeroBounce
Thanks so much for the detailed feedback, Dan! We’re thrilled to hear ZeroBounce has become an essential part of your email process and that consultants recognize its value too.
You’re absolutely right about catch-all addresses — they can be tricky, especially in the B2B world. We’re always looking for ways to improve the additional insights we provide, and your perspective is really helpful.
It’s also great to hear our support team has been responsive, and we’ll keep working to make sure communication is as clear and smooth as possible.
Best Email Validation Tool EVER
September 18, 2025
Reply from ZeroBounce
Thanks, Sarosh! We’re thrilled to hear you think so highly of our service!
It means a lot to know ZeroBounce is making such a big impact for you.
Reply from ZeroBounce
Thank you for your feedback! We’re glad to hear it’s working well overall. If you can, please reach out to our support team — we’d love to take a closer look at the invalid emails you mentioned and see how we can help.
Helped us clean-up our email lists so…
Helped us clean-up our email lists so we can clearly see our email response rates and target effectively.
September 18, 2025
Reply from ZeroBounce
Thanks, Alyssa! We’re so glad ZeroBounce has helped you clean up your lists and get clearer insights into your response rates — targeting the right people makes all the difference.
The ease of use and API is amazing!
September 18, 2025
Reply from ZeroBounce
Thanks, Ron! We’re happy to hear you’re enjoying the ease of use and our API — making things simple and smooth is exactly what we aim for.
Amazing company can really rely on them!
September 18, 2025
Reply from ZeroBounce
Thank you, Alex! We’re so glad to hear you can rely on us — that means a lot. We appreciate your support!
I've used other verification tools…
I've used other verification tools before, like Instantly's built in one, and the they didn't detect a lot of email addresses that were bad.
ZeroBounce is solid. It's valid leads are legit, and my campaigns rarely have bounce backs or mail to leads who are don't want to be mailed. In short, ZeroBounce is solid and way better than other services I tried.
September 18, 2025
Reply from ZeroBounce
Thank you, Mike!
We’re happy to hear that ZeroBounce has been more accurate and reliable for you than other tools. It’s great to know it’s helping reduce bounces and keep your campaigns on track — we really appreciate your feedback!
And let me state for the record: your website is SUPERB.
Outstanding.
Outstanding.
The service helped my emails a lot.
A glitch happened and was amazingly resolved, you know its a great company when they handle issues like pros.
You cannot go wrong
September 3, 2025
Unprompted review
Reply from ZeroBounce
That’s wonderful to hear, Kenny!
Thank you for giving us another chance and for the kind words.
We’re so glad everything was resolved and that ZeroBounce is helping your emails perform better. It means a lot to us.
We're always here for you.
Reply from ZeroBounce
Thank you, Jack. We’re glad to hear you’re happy with the validity of our results — it means a lot to us!
Great Tool for marketing
ZeroBounce has been a reliable email validation tool for us. The platform is straightforward, easy to integrate, and provides accurate results with minimal false positives.
September 17, 2025
Reply from ZeroBounce
Thank you, Charu, we’re so glad to hear that ZeroBounce has been reliable and easy to integrate for your team!
It’s great to know the accuracy has been meeting your expectations!
Took My Campaigns to the Next Level”
ZeroBounce has transformed my email marketing. Their validation system is spot-on, cutting bounce rates and boosting deliverability. The platform is fast, easy to use, and delivers clear reports. Best of all, their support team is responsive and genuinely helpful, ensuring you get the results you need.
September 16, 2025
Reply from ZeroBounce
Thank you, Miles.
We’re so happy to hear how much of a difference ZeroBounce has made for your email marketing.
It’s great to know the accuracy, speed, and clear reports have been so helpful, and we’re especially glad our support team has been able to support you along the way.
Thanks for your review!
Reliable and Accurate Email Validation Service
I’ve had a great experience with Zerobounce. The platform is easy to use, fast, and very accurate when it comes to email validation. It helped me clean up my lists and improve deliverability significantly.
September 16, 2025
Reply from ZeroBounce
Thank you, Fiete!
We’re happy to hear ZeroBounce has been easy, fast, and accurate for you. It’s great to know it’s helped clean your lists and boost your deliverability—exactly what we aim for!
The quality of ZeroBounce is unmatched
The quality matters - And honestly, ZeroBounce is the only one that I can trust. Love it.
Even though I tried other verifiers you just never know if the email is going to bounce and I don't wanna run the risk - so I just do it on ZeroBounce where I know it's safe and I can trust it
September 16, 2025
Reply from ZeroBounce
Thank you, Ramin!
It means a lot to hear that you trust ZeroBounce above the rest. We know how important quality and reliability are, and we’re glad we can give you that peace of mind with your emails.
We love having you as a customer! We're always here for you. Thanks again for the review.
A life saver
a really platform , it help us cleaning our lists , specially when we have a big lists of emails of users who subscribed from 2015,
September 16, 2025
Reply from ZeroBounce
Thank you, Tinhinen!
We’re so glad ZeroBounce has been helpful for cleaning up those older subscriber lists — keeping them fresh can make a big difference. It’s great to know it’s working well for you!
Very easy to use - great results
Very easy to use. Gives us a great insight into the health of our email database. Very good for cleaning up our CRM.
September 16, 2025
Reply from ZeroBounce
Thanks, Se!
We’re happy to hear ZeroBounce has made it easy to clean up your CRM and keep your database healthy. It’s great knowing it’s giving you the insights you need!
One of the best tools out there
I’ve successfully used Zero Bounce in many projects, and it has never let me down.
September 16, 2025
Reply from ZeroBounce
Thanks, Fabian!
We’re thrilled to know ZeroBounce has been reliable for you across so many projects. We appreciate your trust in us!
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