AN
Verified User in Banking
"Manual validation was exhausting. I verified 25,000 contacts in two days. A game‑changer!"
4.5/5
What do you like best about ZeroBounce?

Its accuracy and speed — ZeroBounce cleans huge contact lists quickly and reliably, which saves a ton of time Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

Catch‑all emails cost 2 credits, which often makes companies hesitant to buy. As a result, we still end up manually checking catch‑all contacts on LinkedIn Review collected by and hosted on G2.com.

Verified User in Real Estate
UR
Verified User in Real Estate
"Incredible Results"
5/5
What do you like best about ZeroBounce?

As a Realtor, it is vital to keep my referral and "Sphere of Influence" Lists valid in my "Customer Relationship Management" database. I have tried other services, and I am not sure what type of magic Zero Bounce uses, but it works incredibly well. The process is user friendly, affordable, and the results are quick and extremely accurate. Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

There is virtually no downside to using ZeroBounce. The only downside would be if you didn't use ZeroBounce and keep using old stale email lists that ultimately damage your server reputation. Review collected by and hosted on G2.com.

AN
Verified User in Retail
"Affordable and Highly Accurate Email Verification"
5/5
What do you like best about ZeroBounce?

ZeroBounce is very affordable compared to other email verification tools, and the accuracy is consistently high. It helps reduce bounce rates and improves overall email campaign performance. Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

The interface could be improved slightly, and some advanced features take time to fully understand. However, these are minor issues compared to the overall value it provides. Review collected by and hosted on G2.com.

Verified User in Computer Software
UC
Verified User in Computer Software
"A great tool to reach our objectives"
5/5
What do you like best about ZeroBounce?

ZeroBounce helps us maintain a clean and high-quality email database by providing accurate insights into email validity and deliverability. It plays a key role in protecting our sender reputation, improving campaign performance, and optimizing overall email marketing results. Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

While the platform is very effective, it could benefit from offering more detailed insights and actionable recommendations. Additionally, having native integrations with platforms like Zoho Campaigns would greatly improve workflow efficiency and make it easier to activate clean data directly within our marketing ecosystem. Review collected by and hosted on G2.com.

Verified User in Information Technology and Services
CI
Verified User in Information Technology and Services
"Overpriced email deliverability service"
1.5/5
What do you like best about ZeroBounce?

ZeroBounce is easy to use and had good offerings for the price. Unfortunately, their pricing took a turn for the worse when they forced all users to sign up for subscription bundles. These are bloated and loaded with features you don't use, and you pay extra for services you don't want. Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

ZeroBounce used to let you pick and choose which services you wanted. This made them better than competitors that forced you to buy bloated subscriptions. ZeroBounce has taken a turn for the worse and now exclusively sells the same bloated packages. Review collected by and hosted on G2.com.

AN
Verified User in Consumer Goods
"Accuracy, Speed, Outcome"
5/5
What do you like best about ZeroBounce?

I trust ZeroBounce for the accurate results it provides. I’ve already integrated it with our CRM, and now we can be confident that all our email addresses are valid, verified, and ready to use across different emailing platforms for better deliverability and performance. Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

I don’t really dislike anything about ZeroBounce. It has been reliable, accurate, and easy to use since we integrated it with our CRM. The results are consistent, and it helps us keep our email lists clean and ready for campaigns. Overall, it works great. Review collected by and hosted on G2.com.

AN
Verified User in Marketing and Advertising
"Handy Tool for Clearing Hard Bounces"
5/5
What do you like best about ZeroBounce?

Highly efficient way to scrub email lists. Hard bounces get you in trouble with email distribution partners, which can be sensitive. 10% or more often results in account suspension, then negotiations to restore services. Just run your lists through ZeroBounce and eliminate all the bad addresses, or at least enough to fly below the 10% threshold. Much easier to do this than negotiate to restore services week to week. Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

Its great, no complaints. Fast upload and decent turnaround time. Review collected by and hosted on G2.com.

Rich B.
RB
Rich B.
Director of IT
Mid-Market (51-1000 emp.)
"Unbeatable Non-Expiring Credits and Easy CSV Uploads, Now with More Features"
4.5/5
What do you like best about ZeroBounce?

Hands down the best thing is that credits NEVER expire. We did a massive validation of over 600,000 emails three years ago. If I recall, 1 million credits was less expensive than 500,000 plus 100,000. Marketing has 3 new batches of 25,000 each and when I logged in (3 years later) our credits are still there and valid! Amazing. Loading .CSV files is super easy. Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

I haven't looked for 3yrs, but there are a bunch of new features. 3yrs ago it was pretty feature light. Review collected by and hosted on G2.com.

Response from Corina Leslie of ZeroBounce

Thank you for your review, Rich! We’re so happy to hear you’ve had a great long-term experience with ZeroBounce and that our non-expiring credits and easy uploads have made your work easier. It’s wonderful to know we’ve helped you stay compliant and protect your sender reputation over the years.

Minh N.
MN
Minh N.
Data Management Specialist, APAC & NAMER - Accounts Prioritisation & CRM Automation
Mid-Market (51-1000 emp.)
"Precise Email Validation with Seamless API Integration"
4.5/5
What do you like best about ZeroBounce?

ZeroBounce delivers fast, accurate email verification backed by in-depth, easy-to-read reporting. Their real-time API integration makes it simple to embed validation into your existing workflows, catching typos, spam traps, and disposable addresses before they impact deliverability. Combined with a comprehensive dashboard that surfaces actionable insights, ZeroBounce is a reliable, developer-friendly solution for keeping your mailing lists clean and engaged. Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

A sizeable portion of addresses get labeled “catch-all,” meaning ZeroBounce can’t decisively verify deliverability—so we either risk sending to them or discard potentially valid contacts. Review collected by and hosted on G2.com.

Response from Corina Leslie of ZeroBounce

Thanks so much for the fantastic review! We love hearing how ZeroBounce is helping you boost deliverability.

You’re absolutely right that catch-all domains can be tricky. However, many of our customers love our scoring service to further investigate catch-all emails and make more informed decisions. We recommend you only keep contacts with a score between 8 and 10 in your list. Here's more info: https://www.zerobounce.net/services/email-scoring/

Hope this helps, and thanks again for trusting ZeroBounce!

Marcomm A.
MA
Marcomm A.
Marketing Specialist
"Accurate and Easy to Use"
4/5
What do you like best about ZeroBounce?

ZeroBounce is easy to use. It easily integrates with my HubSpot CRM and the two way flow of data is accurate and never causes any issues. I also enjoy the AI Summaries of the list verification and the visualizations. Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

One thing I wish is if ZeroBounce kept a track of emails that have already been verified and do not charge a credit whenever I enter an email which has already been verified earlier. Review collected by and hosted on G2.com.

Response from Corina Leslie of ZeroBounce

Thank you for sharing your feedback. We’re thrilled to hear that you find ZeroBounce easy to use and that the HubSpot integration, AI summaries, and visualizations are adding value to your workflow.

We also appreciate your suggestion about tracking previously verified emails to avoid using credits again. We’re always looking for ways to improve the platform and make it even more convenient for our users, and input like yours is invaluable in guiding those improvements.