AN
Verified User in Financial Services
"Reliable Email Validation That Just Works"
5/5
What do you like best about ZeroBounce?

What I like most is the flexibility it offers. The ability to validate up to 25 individual emails without having to upload a CSV file is a huge time-saver for quick checks. The validation process is consistently fast and the accuracy of the results gives me a lot of confidence in my email lists. Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

So far, I have had a very smooth experience and haven't encountered any significant issues or downsides. It does exactly what it promises. If I had to pick something, perhaps more integrations for the free tier would be nice, but honestly, the current toolset is already excellent for my needs Review collected by and hosted on G2.com.

Verified User in Information Technology and Services
AI
Verified User in Information Technology and Services
"Zero Bounce Really Helps"
4.5/5
What do you like best about ZeroBounce?

It helps us understand Valid email addresses vs, catch alls vs invalid emails Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

I wish it was free but it is really important to use Review collected by and hosted on G2.com.

AN
Verified User in Research
"Does an amazingly great job at reducing email bounces"
5/5
What do you like best about ZeroBounce?

What I like most is how accurate and straightforward it is. It helped clean up our email lists quickly and noticeably reduced bounce rates. The interface is easy to use, results are clear, and it saves a lot of time compared to manual list cleaning. Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

There isn’t much to dislike, but pricing can feel a bit high if you’re validating very large lists frequently. Also, some results may require a bit of interpretation for first-time users, though the documentation helps. Review collected by and hosted on G2.com.

Katie W.
KW
Katie W.
Director of Sales and Marketing
Small-Business (50 or fewer emp.)
"Zerobounce Keeps Our Email Lists Clean and Deliverable"
5/5
What do you like best about ZeroBounce?

Zerobounce helps us to ensure our email lists will be delivered to real email accounts that will not bounce or list us as spam. Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

I wish they allowed us to download our old lists we've cleansed. There's a limit on that of 30 days I believe, which isn't ideal. Review collected by and hosted on G2.com.

AN
Verified User in Real Estate
"Fast & Beginner Friendly"
5/5
What do you like best about ZeroBounce?

It's very easy to use. As someone who had never used an email verifier, I didn't really know what to expect. I did some research on how to do it, I came across an article by ZeroBounce. I signed up for two different companies but ended up going with ZeroBounce. They have been great! Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

I wish they had an option for verifying phone numbers, and doing the same thing they do with emails but for cleaning up mass phone numbers. Review collected by and hosted on G2.com.

Jennifer  L.
JL
Jennifer L.
"Cleaning things up and Reactivating Old Leads"
5/5
What do you like best about ZeroBounce?

I've appreciated the ease of using the platform to help us on the email clean up journey. We have a lot of older leads and contacts in an industry that has a lot of turn over, so being able to upload a spreadsheet and turn around our query quickly has been a huge help. The data has been accurate and I like the level of clarity about our emails. Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

The only downside is I wish I could bulk download my spreadsheets after they've all been validated instead of doing them individually. It's a minor thing though. Review collected by and hosted on G2.com.

Response from Corina Leslie of ZeroBounce

Thank you for your review! We’re really glad ZeroBounce has made it easier to clean up older leads and keep your data healthy as you re-engage contacts. We appreciate your note about bulk downloading results and will pass that along to our team as we work on improving the workflow.

AN
Verified User in Capital Markets
"Accurate and fast email validation at scale"
4.5/5
What do you like best about ZeroBounce?

The accuracy at scale is what stands out most. We work with very large institutional contact datasets, and ZeroBounce consistently identifies invalid and risky emails without slowing down our workflow. The bulk processing and API options are straightforward, fast, and easy to integrate, which makes it a core part of our data quality pipeline. Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

Not much its a great tool and we enjoy the people we work with Review collected by and hosted on G2.com.

Response from Corina Leslie of ZeroBounce

We’re glad to know ZeroBounce is performing well for you at scale. Validating large institutional datasets is a demanding task, so it’s encouraging to hear that the bulk tools and API fit smoothly into your workflow and support your data quality pipeline.

Thank you for the kind words about the experience with our team. Hearing that from users who run high-volume, complex processes means a lot.

It’s great to see the impact clean data is having on your outreach and CRM workflows. Stronger deliverability, lower bounce rates, and more efficient targeting all start with accurate validation, and we appreciate you sharing how this has supported your pipeline and conversion efforts.

AN
Verified User in Apparel & Fashion
"a good tool for checking emails"
4.5/5
What do you like best about ZeroBounce?

What I like best about ZeroBounce is how accurate and easy to use it is. The platform quickly cleans and verifies email lists, helping reduce bounces and improve deliverability. It’s straightforward, reliable, and gives clear results, which makes managing email campaigns much easier. Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

is that the verification process can feel a bit slow with larger lists, and some features are only available on higher-priced plans. While the results are reliable, the cost can add up if you need to run frequent or high-volume checks. Review collected by and hosted on G2.com.

Response from Corina Leslie of ZeroBounce

Thank you for taking the time to share your experience.

We’re glad to hear that ZeroBounce has helped improve your deliverability, reduce bounces, and make managing your email campaigns easier. We understand that working with larger lists can sometimes feel slow, and that certain features are only on higher-tier plans. We’re always looking for ways to improve performance and provide even more value to our customers.

Your feedback is greatly appreciated.

Jeffrey G.
JG
Jeffrey G.
Founder
Small-Business (50 or fewer emp.)
"Valid Email Verification, Interface Shines Despite API Hiccups"
3.5/5
What do you like best about ZeroBounce?

The interface is easy to use and the pricing is fair compared to the rest of the market. Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

Well, we have situations where the API returns one result or no result. And the user experience returns another and a lot faster. Like, when I log in to the site. So that's been a problem we've mentioned. And we haven't really gotten a solution on that. I also think that the catch all email bounce rate's relatively high. It's higher than it used to be. Review collected by and hosted on G2.com.

Verified User in Market Research
UM
Verified User in Market Research
"I love zero bounce"
5/5
What do you like best about ZeroBounce?

What I like most is how accurate and reliable the email validation is. It’s easy to use, gives clear reasons for each result, and has helped noticeably reduce bounce rates and protect sender reputation. The additional tools like spam trap detection and warm-up support make it more than just a basic email Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

Honestly, there’s nothing I dislike. The platform does exactly what it promises, runs smoothly, and the tools work reliably. Everything is well thought out and easy to use, which makes the experience straightforward and stress-free. Review collected by and hosted on G2.com.