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Review summary

Based on reviews, created with AI

Reviewers overwhelmingly had a great experience with this company. Customers appreciate the platform for its user-friendliness and efficiency in cleaning email lists. They highlight the positive impact on email deliverability, with many noting significant improvements in bounce rates and overall campaign performance. The accuracy of the service in identifying invalid emails, spam traps, and outdated contacts is a recurring theme. Consumers also value the seamless integration with other tools like HubSpot and Mailchimp, which streamlines their workflow. The responsive and helpful customer support team is another aspect that receives praise. People find the pricing model fair and scalable, with the pay-as-you-go option being particularly appreciated. The detailed reporting and transparent breakdown of results further contribute to a positive user experience.

Based on these reviews

Rated 5 out of 5 stars
Invited

Our average open rates went from 7% to 20%+. At my current job, I inherited an older but very large email list with poor hygiene. We also had a large volume of new contacts per month. By adding zero b... See more

Rated 5 out of 5 stars
Invited

We’ve been using this service for years, it’s reliable, easy to work with, and helps us keep our bounce rate low. It provides detailed statistics for each email and offers a convenient API. We’re sati... See more

Company replied

Rated 5 out of 5 stars
Invited

The platform is incredibly intuitive. Uploading our large lists is a breeze, and the results are back faster than any other service we've tried. The detailed breakdown catch-alls, and especially t... See more

Company replied

Rated 5 out of 5 stars

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 discoun... See more

Company replied

Rated 5 out of 5 stars
Invited

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 sp... See more

Company replied

Rated 4 out of 5 stars
Invited

Isuses logging in. While the platform works great, everytime I log in I have issues, 404 errors, etc. It is quite frustrating. Additionally, the catch-all rating function should not be charged... See more

Company replied

Rated 5 out of 5 stars
Invited

We've been using ZeroBounce for over 3 years now, and honestly, it's been rock solid. It’s accurate, easy to use, and has helped us maintain great email deliverability by keeping our lists clean. The... See more

Company replied

Rated 5 out of 5 stars

Vladimir answered my support email on Thanksgiving night at 1:30AM. Amazing service and support! And the service is working great for me so far.

Company replied

Rated 4 out of 5 stars
Invited

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 wit... See more

Company replied

Rated 5 out of 5 stars
Invited

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 smoothl... See more

Company replied

Rated 5 out of 5 stars

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, everyt... See more

Company replied

Rated 5 out of 5 stars
Invited

ZeroBounce cleaned a large list and our next send bounced far less, so it does the core job. Upload was quick, the interface is simple, and the CSV is clear enough to act on right away. It marked inva... See more

Company replied

Rated 5 out of 5 stars
Invited

ZeroBounce has been super helpful! The Chrome extension is a real time-saver — it lets quickly check emails without switching tools and/or tabs. Also love the HubSpot integration. Being able to veri... See more

Company replied

Rated 5 out of 5 stars
Invited

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

Rated 5 out of 5 stars
Invited

Typically many email addresses become outdated over the time and when trying to stay up-to-date to our customer data base. ZeroBounce will give us a very quick analyse of what are out of use, or need... See more

Company replied

Rated 5 out of 5 stars
Invited

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

Company replied

Rated 4 out of 5 stars
Invited

We are sending over 300k E-Mails per day, so a top reputation for our domain and sender IP address is extremely important for delivery rates. You always have some bounces but reducing it to the minimu... See more

Company replied

Rated 5 out of 5 stars
Invited

Zerobounce has helped me transform my data systems ensuring that I am emailing real, verified people. I have been using the system for the last 2 months and already have noticed huge differences in my... See more

Company replied

Rated 5 out of 5 stars
Invited

I've tested several similar services to Zero Bounce, such as snovio.io and hunter.io. Zero Bounce stands out as one of the most effective, reliable, and user-friendly options. As a result, I have save... See more

Company replied

Rated 5 out of 5 stars

Our company has used several email verification programs. We find this one to be excellent! It offers the ability to select how many credits you would like to purchase versus being sold bulk amounts t... See more

Company replied

Rated 4 out of 5 stars

Slight problem redeeming the code for 24k credits that came with the liefetime deal. Chat fixed it and helped me choose the payment option that allowed me to redeem the code. I get confused at t... See more

Company replied

Rated 5 out of 5 stars
Invited

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

Rated 5 out of 5 stars

ZeroBounce has made it incredibly easy to clean up our email list. The platform is excellent, and their team has been great to work with. They also provided wonderful customer service when I had quest... See more

Company replied

Rated 5 out of 5 stars
Invited

Zerobounce has done what the name says. It's reduced our bounce rate and also helped to detect out of date contacts etc. It's very easy to use, especially the Hubspot integration. We don't send huge n... See more

Company replied

Rated 5 out of 5 stars
Invited

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... See more

Company replied

Rated 5 out of 5 stars
Invited

ZeroBounce is a game-changer for our email marketing. It helped us quickly make sense of a messy, years-old list, separating valid contacts from risky addresses so we could protect deliverability and... See more

Company replied

Rated 5 out of 5 stars

Great tool, many options to go with (pay as you go, monthly sub...) really fast support by chat, and very efficient services! My Hard bounces rate go down from 6% to 0,2% !!

Company replied

Rated 5 out of 5 stars
Invited

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. Deliverabi... See more

Company replied

Rated 5 out of 5 stars

Zerobounce has been invaluable with helping us get our initial outbound system going. We've seen a huge decrease in bounced leads on our campaigns.

Company replied

Rated 5 out of 5 stars
Invited

I have accounts with multiple email validation services but I only utilize Zerobounce. This is for a few reasons. I send my emails through Instantly, and Instantly is very sensitive when it comes to f... See more

Company replied

Rated 5 out of 5 stars
Invited

ZeroBounce is a very user-friendly service that does exactly what it promises to do. I like all of the metrics displayed on the dashboard and how easily they allow you to change plans or add additiona... See more

Company replied

Rated 5 out of 5 stars
Invited

Zerobounce is my go-to email verification tool. Very easy to use and payment can be based on usage (every verification cost 1 credit). This makes it fair, while scaleable at the same time. Also great... See more

Company replied

Rated 5 out of 5 stars
Invited

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 de... See more

Company replied

Rated 5 out of 5 stars
Invited

We’ve been using ZeroBounce for our email validation needs, and it has truly made a difference for our business. The service is excellent at identifying bounced emails, helping us maintain a clean a... See more

Company replied

Rated 5 out of 5 stars
Invited

Everyone should be scrubbing their lists regardless of how good you think your data is. This has saved out countless marketing $$$ and peace of mind that our data is recent and deliverable!

Company replied

Rated 3 out of 5 stars
Invited

The validation system works great; it's easy to use and very quick. However, the warm-up part of the tool is confusing and inaccurate. The stats from the warm-up don't match the stats from sends in Kl... See more

Company replied

Rated 5 out of 5 stars
Invited

Great product, I'd say they are a bit more stringent than other email verifiers, so I get a lower yield, but I trust the results more. I like to use this as my last line of defense in a triple verific... See more

Company replied

Rated 3 out of 5 stars
Invited

We have been using Zerobounce for 5 years now. I would have given it 5 stars a few months ago, but the api gives different results than the site, and the catch all seem to be bouncing quite a bit. W... See more

Company replied

Rated 4 out of 5 stars
Invited

We use this service to verify our emails that we send our newsletter to. With our previously very high bounce rate, we have significantly brought that down with zerobounce!

Company replied

Rated 5 out of 5 stars
Invited

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!

Company replied

Rated 4 out of 5 stars
Invited

Zerobounce does a great job cleaning and validating lists to give you confidence in the list you are sending to. The platform is easy to use and quick to give you results.

Company replied

Rated 5 out of 5 stars
Invited

I've been using ZeroBounce for years. I like the clarity and transparency of it. I tend to think my lists are better than they are and I am always shocked when ZeroBounce brings me back to reality.

Company replied

Rated 5 out of 5 stars
Invited

They have a 40% EXTRA CREDITS, Completely crazy. Best Place to purchase credits.

Company replied

Rated 5 out of 5 stars

Very quick and Efficient support. UX is great, 2 options of subscription sound amaizing!

Company replied

Rated 5 out of 5 stars

I like this service because it clarifies understandable reasons for sometimes unclear server output. Helpful to know and for explaining fluctuations in the list.

Company replied

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Company details

  1. #27 of 247 best companies in Business to Business Service
  2. #5 of 47 best companies in e-Commerce Solution Provider
  3. #4 of 22 best companies in Email Service Provider
  4. #2 of 55 best companies in Internet Service Provider
  5. #2 of 48 best companies in Media Company
  6. #1 of 31 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

Written by the company

Remove Bounces & Spam Traps
You invest time, energy, and money into your email campaigns. We help you find valid emails in real-time, reach the inbox reliably, and connect with your customers. Drive your open rates and ROI with 99% accurate email validation, AI-driven scoring, Email Finder, and email deliverability tools.

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

4.9

Excellent

TrustScore 5 out of 5

2K reviews

5-star
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1-star

Replied to 66% of negative reviews

Typically replies within 1 week


Rated 5 out of 5 stars
Invited

Open rates went from 7% to 20%+

Our average open rates went from 7% to 20%+. At my current job, I inherited an older but very large email list with poor hygiene. We also had a large volume of new contacts per month. By adding zero bounce, I was able to eliminate over 10 spam traps and thousands of low-quality emails. We've seen our open rates and deliverability improve drastically as a result.

December 2, 2025
Rated 5 out of 5 stars

Great tool

Great tool, many options to go with (pay as you go, monthly sub...) really fast support by chat, and very efficient services! My Hard bounces rate go down from 6% to 0,2% !!

December 2, 2025
Unprompted review
ZeroBounce logo

Reply from ZeroBounce

Thank you so much for sharing this wonderful feedback!

We’re really glad to hear you're enjoying the flexibility of our plans, and it’s great to know the chat support has been fast and helpful for you.

Seeing your hard bounce rate drop from 6 percent to 0.2 percent is an incredible improvement, and we’re thrilled ZeroBounce played a part in that success.

If you ever need anything or have questions as you continue optimizing your email performance, we’re always here for you. That means anytime, every day of the year.





Rated 5 out of 5 stars
Invited

Reliable Email Verification Service

We’ve been using this service for years, it’s reliable, easy to work with, and helps us keep our bounce rate low. It provides detailed statistics for each email and offers a convenient API. We’re satisfied with the cooperation and can confidently recommend it.

December 2, 2025
ZeroBounce logo

Reply from ZeroBounce

Thank you so much, Vinaty.

We truly appreciate you sharing this. It means a lot to hear that you’ve trusted ZeroBounce for years and continue to find it reliable, easy to use, and helpful in keeping your bounce rate as low as possible.

We’re also glad the detailed stats and API have been valuable for your workflow.

We’re grateful for your recommendation and look forward to supporting you for many more years to come. If you ever need anything, we’re here for you 24/7.

Rated 5 out of 5 stars

I like your customer service

I like your customer service, very well, very kind, GOOD!

December 1, 2025
Unprompted review
ZeroBounce logo

Reply from ZeroBounce

Thank you so much, Asher.

We’re really glad to know you’ve had such a kind and positive experience with our customer service. That's so important to us. Your encouragement means a lot to the team.

If you ever need anything, we’re always here (24/7) and happy to help.

Rated 5 out of 5 stars

Amazing response times and service

Vladimir answered my support email on Thanksgiving night at 1:30AM. Amazing service and support! And the service is working great for me so far.

November 29, 2025
Unprompted review
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Reply from ZeroBounce

Thank you so much, Felipe.

We’re really glad to hear Vladimir was there for you. We're always there for you: even in the middle of the night on a holiday.

It's also wonderful hearing that the service is working so well for you.

Our team is here 24/7, every day of the year, so if you ever need anything at all, we’re always standing by for you.

Rated 5 out of 5 stars

I like this service because it…

I like this service because it clarifies understandable reasons for sometimes unclear server output. Helpful to know and for explaining fluctuations in the list.

November 26, 2025
Unprompted review
ZeroBounce logo

Reply from ZeroBounce

Thank you, Judith.

We're really glad to hear the service helps bring clarity to those confusing server responses.

Understanding why fluctuations happen can make a big difference in managing a healthy email list, and it’s great to know the explanations have been useful for you.

If you ever need more insight or have questions about any results, we’re here for you anytime. At ZeroBounce, you can always chat with a real person 24/7.

Rated 5 out of 5 stars
Invited

They have a 40% EXTRA CREDITS

They have a 40% EXTRA CREDITS, Completely crazy. Best Place to purchase credits.

November 26, 2025
ZeroBounce logo

Reply from ZeroBounce

Thank you so much, Ander. We’re really glad you’re enjoying the 40% extra credits.

We do promotions like Black Friday because we try to give customers great value for their investment.

We're so pleased that you understand what email validation and deliverability can do for a business. When you use these tools, you get better results.

If there’s ever anything you need, we’re always here 24/7 to help.

Rated 5 out of 5 stars
Invited

Zerobounce is easy to use and extremely…

Zerobounce is easy to use and extremely helpful. As a company we save a lot of time.

November 24, 2025
ZeroBounce logo

Reply from ZeroBounce

Thank you for reviewing ZeroBounce, Diane!

It's great that you find ZeroBounce "easy to use" and "extremely helpful." Thank you for pointing out that using the service saves a lot of time. It can save resources too.

We appreciate your feedback. We're always here for you.

Rated 5 out of 5 stars

Good customer support!

November 22, 2025
Unprompted review
ZeroBounce logo

Reply from ZeroBounce

Thanks for reviewing ZeroBounce, Vilma.

We're especially thrilled to see your approval of our support team. We place a huge priority on good customer support.

We appreciate you taking the time to provide this feedback!

Rated 5 out of 5 stars

Totally satisfied, I use it for 5 years

Very quick and Efficient support. UX is great, 2 options of subscription sound amaizing!

November 21, 2025
Unprompted review
ZeroBounce logo

Reply from ZeroBounce

Thanks for reviewing ZeroBounce, Yaryna!

We're thrilled that you're "totally satisfied," and we're so glad that you complimented our quick and efficient support team.

We appreciate all of your feedback. We're always here for you whenever you need us!

Rated 5 out of 5 stars
Invited

I've been using ZeroBounce for years

I've been using ZeroBounce for years. I like the clarity and transparency of it. I tend to think my lists are better than they are and I am always shocked when ZeroBounce brings me back to reality.

November 20, 2025
ZeroBounce logo

Reply from ZeroBounce

Thank you for the review, Daryl! We really appreciate you being with us for so many years.

Your line about thinking your lists are better than they are made us smile. ZeroBounce has a way of keeping all of us honest. We're glad the clarity and transparency are helping you stay in control of your data and maintain strong deliverability.

If you ever need anything at all, we're always here for you.

Rated 5 out of 5 stars
Invited

Excellent Sync

November 17, 2025
ZeroBounce logo

Reply from ZeroBounce

Thank you for reviewing ZeroBounce, Hemlata.

We're so glad to see that you are getting great value from the service.

We appreciate your taking the time to provide us with this valuable feedback.

Rated 5 out of 5 stars

ZeroBounce has made it incredibly easy…

ZeroBounce has made it incredibly easy to clean up our email list. The platform is excellent, and their team has been great to work with. They also provided wonderful customer service when I had questions about our billing.

September 27, 2025
Unprompted review
ZeroBounce logo

Reply from ZeroBounce

Thank you so much, Stella!

We’re delighted to hear that ZeroBounce has made list cleaning easy for you and that our team could be helpful along the way, especially with your billing questions.

We truly appreciate you taking some time to share your experience!

Rated 5 out of 5 stars

Customer support is fast and they will…

Customer support is fast and they will do anything to help you

November 12, 2025
Unprompted review
ZeroBounce logo

Reply from ZeroBounce

Thanks so much, iTaLiA!

We’re thrilled to hear you’ve had a great experience with our support team. They really do go above and beyond to make sure every customer is taken care of. Your feedback means a lot to them!

Thank you again for reviewing ZeroBounce!

Rated 5 out of 5 stars
Invited
ZeroBounce logo

Reply from ZeroBounce

Thanks so much, Awais!

We really appreciate your kind words. It’s great to hear that you’re finding ZeroBounce reliable and accurate.

We’re always working to make the service even better for you!

Rated 5 out of 5 stars

Amazing support from Vladimir Giugaru

Amazing support from Vladimir Giugaru, I got support within seconds. Thanks, Vladimir.

November 9, 2025
Unprompted review
ZeroBounce logo

Reply from ZeroBounce

Thank you so much for reviewing ZeroBounce, Kumaran!

It's splendid getting a five-star review! It's also great to read that our particular support member, Vladimir, gave such amazing support!

We look forward to serving you even more.

Rated 5 out of 5 stars
Invited

A nice platform

A nice platform - as it helps with DMARC as well - simple pricing and we have used its API for daily checks.

November 7, 2025
ZeroBounce logo

Reply from ZeroBounce

Thank you so much for reviewing ZeroBounce, Rob.

It's great to read your approval of the platform and our straightforward pricing.

We appreciate you pointing out our DMARC monitor. The more deliverability tools you use, the better your results will be.

Thank you again for your feedback. It helps a lot.

Rated 5 out of 5 stars
Invited

it does the job

November 4, 2025
ZeroBounce logo

Reply from ZeroBounce

Thank you for reviewing ZeroBounce, Yunzhi!

We're always here for you, any time you need us.

Rated 4 out of 5 stars
Invited

Zerobounce does a great job cleaning…

Zerobounce does a great job cleaning and validating lists to give you confidence in the list you are sending to. The platform is easy to use and quick to give you results.

November 4, 2025
ZeroBounce logo

Reply from ZeroBounce

Thanks for reviewing ZeroBounce, Jessica!

We're delighted to learn that it does a great job of validating your list. We're glad it gives you confidence when sending because that's so important. The fact that you find it easy to use is critical as well.

We appreciate your feedback, and encourage you to use all of the tools. The more tools in your toolbelt, the better your results will be.

We're always here for you whenever you need us.

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