Joshua M.
JM
Joshua M.
CEO & Founder
"Great Experience"
4.5/5
What do you like best about ZeroBounce?

ZeroBounce’s validation accuracy is exceptional. It has consistently helped us protect our sender reputation, reduce bounce rates, and keep our lists clean without slowing down our workflow. The platform is intuitive, fast, and integrates seamlessly into our processes. Their data enrichment features and confidence scoring have allowed us to make smarter decisions before pushing contacts into our email ecosystem. Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

While ZeroBounce is highly effective, the only area I’d like to see improved is the clarity around certain validation results, especially the “unknown” and “catch-all” statuses. These categories can occasionally require additional manual review or testing on our side to determine how to handle those contacts with confidence. A bit more transparency or guidance in those segments would make an already strong platform even better. Review collected by and hosted on G2.com.

Response from Corina Leslie of ZeroBounce

Thank you so much for sharing such a thoughtful and detailed review. It means a great deal to hear how much ZeroBounce has helped your team protect sender reputation, keep lists clean, and improve deliverability across your email programs. We're especially glad the platform’s speed, accuracy, and enrichment tools have become a meaningful part of your workflow.

We also truly appreciate your feedback about “unknown” and “catch-all” results. Those classifications can be tricky across the entire industry, and insight like yours helps guide where we focus next. To help in the meantime, we’ve included a resource that sheds more light on how catch-all emails work and how to approach them with confidence. We're always working to bring more clarity, transparency, and guidance to those categories so you can move even faster with full confidence.

It’s wonderful to hear about the measurable improvements you’ve seen in engagement and inbox placement. Knowing ZeroBounce is helping drive stronger ROI is exactly what we aim for.

If there’s ever anything more you’d like to see or if you need help interpreting results, our team is always here (24/74) and happy to assist.

See how ZeroBounce improved
AN
Verified User in Staffing and Recruiting
"Exceptional Email Validation & Deliverability Tool"
5/5
What do you like best about ZeroBounce?

ZeroBounce stands out for its exceptional accuracy in email validation. It consistently identifies risky, invalid, or low-quality email addresses with precision, which directly improves our deliverability and campaign performance. I especially appreciate the real-time validation API, the detailed data enrichment, and the user-friendly dashboard that makes bulk list cleaning fast and effortless. The platform is reliable, intuitive, and backed by a highly responsive support team. Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

While ZeroBounce is a strong and reliable platform, there are a few areas that could be improved. The pricing can feel a bit high for smaller businesses or startups that need frequent list cleaning. Some of the more advanced insights and features require additional credits, which adds to the overall cost. The dashboard is powerful, but new users may need a little time to understand all the options and reporting tools. Review collected by and hosted on G2.com.

AN
Verified User in Industrial Automation
"Great platform, helps with Apollo leads"
5/5
What do you like best about ZeroBounce?

It's easy to use and also splits up the email list into the separate validation buckets, there's also a free catch-all email validation included in the check which is nice. The quality is great because we barely have bounces when verifying with ZeroBounce Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

The cost is high unless you get the monthly 99 dollar subscription, so just be aware that it does cost a pretty penny if doing pay as you go Review collected by and hosted on G2.com.

Katarína K.
KK
Katarína K.
Event Manager
Small-Business (50 or fewer emp.)
"Easy to Use, Fast Validation, and Responsive Support"
5/5
What do you like best about ZeroBounce?

Easy to use and simple to understand. Validation is very fast, and the price is acceptable. Support is also always quick to respond. :) Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

Honestly, I didn’t find anything I didn’t like. Review collected by and hosted on G2.com.

AN
Verified User in Computer & Network Security
"Excellent,and very supportive to my work.."
5/5
What do you like best about ZeroBounce?

ZeroBounce helps me clean and validate email lists before cold outreach. It accurately detects invalid, risky, and catch-all emails, which reduces bounce rates and protects sender reputation. The interface is easy to use and results are fast and reliable. Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

Pricing can feel a bit high when validating large volumes of emails, and some catch-all results still require manual review. More detailed explanations for certain validation statuses would also be helpful. Review collected by and hosted on G2.com.

AN
Verified User in Consulting
"President of Business Development Strategy"
5/5
What do you like best about ZeroBounce?

Since we started using ZeroBounce, the email campaigns we consult have seen a drastic reduction in the bounces of non-current contacts supplied by the clients we serve. We have been able to clean and deduplicate lists efficiently and relatively quickly. This allows for much better deliverability, which ultimately is the goal, right? Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

Depending on how deep you want to verify your list, the process can take time - up to 48 hours in some cases, which needs to be planned for when importing client-supplied data that they want deployed in a campaign rapidly. Review collected by and hosted on G2.com.

Verified User in Computer Software
AC
Verified User in Computer Software
"The Ultimate Tool for Smooth Sender Warm-Up and Safe High-Volume Emailing"
5/5
What do you like best about ZeroBounce?

The quality of the tools and the level of service are truly outstanding.

Our account manager, Ciprian Vlad, is an exceptional professional when it comes to deliverability and email performance. He’s always proactive, supportive, and ready to help — even in challenging situations.

The platform’s reliability, the quality of its features, and the way the company continues to evolve make it an absolute must-have for anyone managing multiple senders, email infrastructures, or large databases.

In one particularly positive use case, relying solely on your service, we managed to warm up a sender to the highest Gmail reputation level within 1.5 months.

We’ve also clearly seen improved stability after integrating ZeroBounce. Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

I can’t really say there’s anything I don’t like — even the few issues that came up were quickly resolved thanks to Ciprian’s help.

However, it might be worth the team putting a bit more focus on improving the support department. There were occasional misunderstandings, but I wouldn’t say the support is bad — it’s actually helpful!

There’s always room for improvement, as with everything, but overall the experience has been very positive. Review collected by and hosted on G2.com.

AN
Verified User in Consulting
"How zero bounced has helped me and my business."
5/5
What do you like best about ZeroBounce?

Zero bounce is relatively easy to use once you figure out the small nuances… The cost itself is relatively inexpensive to ensure that the domains that you're working with do not become blacklisted due to too many bounce backs. The chili has helped my business and my clients get their word out without creating issues. I really dig it. Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

The interface could be a little bit more friendly… But aside from that, though… The service overall truly is a necessity if you're doing mass mailings. Review collected by and hosted on G2.com.

AN
Verified User in Primary/Secondary Education
"Peace of mind"
5/5
What do you like best about ZeroBounce?

Very user friendly platform, whether you have one email, 10 emails or 10,000 emails to check the platform is quick and easy to use. Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

We can find that some emails get flagged by Mail Chimp later as soft bounces but this is the nature of email marketing. Review collected by and hosted on G2.com.

AN
Verified User in Health, Wellness and Fitness
"easy and accurate"
5/5
What do you like best about ZeroBounce?

What I like best about ZeroBounce is its accuracy and reliability in cleaning and validating email lists. The platform consistently identifies invalid, spam-trap, and catch-all emails, which helps maintain sender reputation and improves overall campaign deliverability. Its interface is simple, fast, and easy to navigate, making the process seamless even for large datasets. The added features—like email scoring, activity data, and real-time API validation—provide deeper insights that go beyond basic verification. I also appreciate the strong security standards and GDPR compliance, which ensure data is handled safely. Overall, ZeroBounce delivers consistent, dependable performance for email hygiene. Review collected by and hosted on G2.com.

What do you dislike about ZeroBounce?

What I dislike about ZeroBounce is that the pricing can feel high for large volumes, and the dashboard occasionally feels limited in analytics depth. More flexible plans and richer reporting would help. Review collected by and hosted on G2.com.

Response from Corina Leslie of ZeroBounce

Thank you for your thoughtful review! We’re really glad to hear ZeroBounce has been accurate, reliable, and helpful in protecting your sender reputation and improving your campaign performance. We appreciate your note on pricing for large volumes. You may want to take a look at ZeroBounce ONE, which brings all of our tools together in one plan and offers better overall value for frequent or high-volume use: https://www.zerobounce.net/zerobounce-one.