# ZeroBounce Reviews **Vendor:** ZeroBounce **Category:** [Email Verification Software](https://www.g2.com/categories/email-verification) **Average Rating:** 4.7/5.0 **Total Reviews:** 1,367 ## About ZeroBounce ZeroBounce is an award-winning email verification and deliverability platform helping 400,000+ customers improve their email ROI and inbox placement. Its premier deliverability services include: 99% accurate email validation - Remove outdated and risky email addresses to lower email bounce rates and maintain a positive sender reputation. Email Finder - Find new, valid business email addresses and scale your B2B outreach DMARC Monitor - Secure your emails and prevent phishing scams with unlimited email monitoring, security alerts, and automated reporting Email Deliverability Tools - Improve inbox visibility with customized toolkits. Includes email server testing, inbox placement testing, Email Finder, and DMARC Monitoring Activity Data & Email Scoring - Find your most active email subscribers with Activity Data. Additionally, Email Scoring service provides more in-depth insights about your email list to help you achieve email success. ZeroBounce has validated 25+ billion emails and serves companies of all sizes, from solo business owners to Amazon, Disney, Netflix, and Sephora. The platform ensures military-grade security and is GDPR, SOC 2 Type II, ISO-27001-certified, and fully HIPAA compliant. ## ZeroBounce Pros & Cons **What users like:** - Users appreciate the **high accuracy** of ZeroBounce, which enhances lead quality and boosts overall performance. (418 reviews) - Users value the **ease of use** of ZeroBounce, allowing quick and efficient email validation for campaigns. (384 reviews) - Users value the **high accuracy** of ZeroBounce's email validation, enhancing contact quality and protecting their domains. (238 reviews) - Users value the **effective email validation** feature of ZeroBounce, enhancing domain protection by filtering invalid emails. (191 reviews) - Users love the **deliverability improvement** from ZeroBounce, enjoying accurate email validation for enhanced lead quality. (173 reviews) - Speed (156 reviews) - User Interface (124 reviews) - Data Cleaning (110 reviews) - Fast Processing (100 reviews) - Simple (99 reviews) **What users dislike:** - Users note that the service is **expensive** , especially with additional costs for features like the email grader. (155 reviews) - Users experience **inaccuracy** in ZeroBounce's validation, with some valid emails marked invalid and delays from greylisting. (53 reviews) - Users experience **verification issues** with ZeroBounce, as some emails remain unverified and still bounce back. (51 reviews) - Users feel that the **costly services** of ZeroBounce can be prohibitive, particularly for large volume needs. (47 reviews) - Users find the **credit limitations** of ZeroBounce frustrating, especially when verifying large lists quickly consumes credits. (46 reviews) - Users find the **insufficient data** and limited free credits hinder their experience with ZeroBounce's features. (46 reviews) - Improvement Needed (42 reviews) - Users find the **limited credits** of ZeroBounce challenging, especially when dealing with fluctuating email volumes. (40 reviews) - Users experience **slow performance** with ZeroBounce, particularly when processing large email lists, impacting efficiency. (40 reviews) - Email Issues (34 reviews) ## ZeroBounce Reviews ### 1. Accurate Email Verification That Boosts Deliverability and List Hygiene **Rating:** 5.0/5.0 stars **Reviewed by:** Rene M. | Solution Architect, Outsourcing/Offshoring, Mid-Market (51-1000 emp.) **Reviewed Date:** May 08, 2026 **What do you like best about ZeroBounce?** The email verification accuracy is very strong, and the platform consistently identifies invalid, risky, or disposable email addresses before campaigns go out. Since implementing it, we’ve seen noticeable improvements in bounce rates and overall deliverability. The interface is clean and easy to navigate, so bulk verifications are simple even for non-technical users. The API integration has also been smooth, making it straightforward to automate validation workflows across forms and CRM systems. Another major advantage is the added data insights, such as spam trap detection and email activity scoring. These features help us make better decisions around list hygiene and engagement. **What do you dislike about ZeroBounce?** Pricing can add up if you’re working with very large databases or need frequent, high-volume verification. Also, some of the reporting and analytics views could benefit from more customization options and stronger filtering to make it easier to focus on what matters. **What problems is ZeroBounce solving and how is that benefiting you?** This is a great fit for marketing teams, agencies, SaaS companies, and any business that relies heavily on email communication and wants to maintain strong deliverability. ### 2. Great Email Verification That Cuts Bounces and Protects Your Domain **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Staffing and Recruiting | Small-Business (50 or fewer emp.) **Reviewed Date:** April 23, 2026 **What do you like best about ZeroBounce?** It’s great to be able to verify emails before sending, since it reduces the risk of hard bounces and helps protect your domain so you’re less likely to get marked as spam when doing cold outreach, which is wonderful. The main downside for me is that the process feels a little bulky: I have to upload spreadsheets, and it seems like it can only verify either personal or work emails one at a time. That means I end up doing the uploads twice. This may be related to how I’m using it and there could be a better way, but I haven’t found one yet. **What do you dislike about ZeroBounce?** I find uploading spreadsheets to be time-consuming and a bit bulky. If the columns don’t line up properly, it sometimes won’t read the information correctly, and I’m not sure if there’s a better way to handle that. Otherwise, the software itself does a great job of detecting incorrect emails. **What problems is ZeroBounce solving and how is that benefiting you?** It helps keep our domain healthy by preventing us from sending emails to incorrect or invalid email addresses. ### 3. Bulk Email Validation with less hassle **Rating:** 5.0/5.0 stars **Reviewed by:** Jesryll G. | Business Development Executive, Small-Business (50 or fewer emp.) **Reviewed Date:** October 16, 2025 **What do you like best about ZeroBounce?** What I like best about ZeroBounce is how easy it is to clean and verify email lists. It helps improve deliverability and gives us more confidence that we’re reaching real prospects. **What do you dislike about ZeroBounce?** What I dislike is that the pricing can get expensive if you clean large email lists often. The platform works well, but the credits run out pretty fast. **What problems is ZeroBounce solving and how is that benefiting you?** ZeroBounce helps us clean and verify email lists so we avoid high bounce rates and bad contacts. It improves our email deliverability, saves time for the SDR team, and helps us reach more real prospects. **Official Response from Corina Leslie:** > Thank you for your review, Jesryll! We’re glad ZeroBounce makes bulk email validation simple and hassle-free. We appreciate your feedback on speed and are always working to make the process faster. ### 4. ZeroBounce Verification Makes Life Easy **Rating:** 4.5/5.0 stars **Reviewed by:** Daniel R. **Reviewed Date:** February 09, 2026 **What do you like best about ZeroBounce?** ZeroBounce does exactly what you want an email verification tool to do: it protects sender reputation and reduces risk. The validation results are clear and reliable. It's easy to integrate into existing outbound or CRM workflows. From an admin perspective, it's reassuring to have strong spam-trap detection, abuse detection, and compliance standards in place. It’s a dependable “set it and trust it” tool that helps keep campaigns out of trouble. **What do you dislike about ZeroBounce?** Catch-all results still need manual judgment, meaning it isn’t always a fully automated decision engine. At scale, credit usage can add up quickly, so admins must monitor usage closely, especially with multiple teams uploading lists. The UI is functional but not very modern or fast. Some non-technical stakeholders think validation alone ensures inboxing, but that isn’t true. **What problems is ZeroBounce solving and how is that benefiting you?** ZeroBounce addresses the issue of low list quality and delivery risks by spotting invalid, disposable, role-based, and high-risk email addresses before we send. This helps safeguard our domain reputation, lower bounce rates, and prevent unnecessary issues with our email service provider. As an admin, I feel confident knowing our teams are using cleaner data. This leads to more dependable campaign performance and fewer problems to handle later on. ### 5. Don't Use Your CRM Without It **Rating:** 5.0/5.0 stars **Reviewed by:** Cindi M. | President, Small-Business (50 or fewer emp.) **Reviewed Date:** February 08, 2026 **What do you like best about ZeroBounce?** ZeroBounce is so easy to use. In a world of email blasts, spam filters, and firewalls - getting your message out to your clients can be challenging! Even if you have communications with a client muliple times, your domain emails can be flagged and stopped by the firewall and your website reputation can be harmed if you're emailing dead addresses. I use Zero Bounce against my existing client emails to ensure that I don't arbitrarily set of a spam reputation flag, etc. **What do you dislike about ZeroBounce?** Nothing ... it' super easy to use! No complaints at all. **What problems is ZeroBounce solving and how is that benefiting you?** It's ensuring that I am aware of emails of clients who have either moved to another company, or whose firwall is blocking me. It helps me avoid getting flagged as a a "spammer", even though I'm reaching out to MY CLIENT LIST. It ensures quality of my email transmissions. ### 6. Excellent validation service, easy to use and navigate **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Electrical/Electronic Manufacturing **Reviewed Date:** January 27, 2026 **What do you like best about ZeroBounce?** The signup process was as simple as it could get. I am using the credit model to validate emails through our CRM tool (EngageBay). It was straightforward to enable the API, much better than similar tools which usually hide the API code or make it very difficult. The results of email validation are detailed and insightful, helping us to quickly and automatically improve the CRM database **What do you dislike about ZeroBounce?** Not a lot - but I feel that the ZeroBounceOne price is on the high side for small organizations like ours. **What problems is ZeroBounce solving and how is that benefiting you?** Our customer base consists mainly of scientists who move between institutions frequently. We already use other tools to track them (SciLeads), but our bounce rates are high when running newsletter campaigns. ZeroBounce in EngageBay helps us to be alert of such changes and help us to pin down where people move so that we can resubscribe them. ### 7. Helpful Live Chat and Great Results for Improving Email Deliverability **Rating:** 4.5/5.0 stars **Reviewed by:** Steve S. | Head of Digital Marketing, Small-Business (50 or fewer emp.) **Reviewed Date:** May 09, 2026 **What do you like best about ZeroBounce?** Very helpful online chat (a real person) and access to one free usage for a list of up to 100 email addreses. Excellent resilts screen and dowen load of its results and very helpful to maintain and improve deliverability and reputation **What do you dislike about ZeroBounce?** Fairly high minimum credit purchase for some users **What problems is ZeroBounce solving and how is that benefiting you?** Deliverability and reputation of/from an email sender **Official Response from Corina Leslie:** > Thank you for reviewing us, Steve -- we really appreciate your feedback! ### 8. Reliable and Accurate Email Verification Tool **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Marketing and Advertising **Reviewed Date:** January 05, 2026 **What do you like best about ZeroBounce?** The accuracy of ZeroBounce is what I like best. It does an excellent job identifying invalid emails, spam traps, abuse addresses, and catch-all domains. The detailed reporting makes it easy to decide which emails to keep or remove, and the platform is very easy to use. It has helped improve deliverability and reduce bounce rates consistently. **What do you dislike about ZeroBounce?** While ZeroBounce is very effective, the credit cost can feel a bit high for large-volume users or frequent list cleaning. Some results, like catch-all emails, still require manual judgment, which adds an extra step. However, these are minor drawbacks compared to the overall value it provides. **What problems is ZeroBounce solving and how is that benefiting you?** ZeroBounce solves the problem of poor email list quality by accurately identifying invalid, inactive, and risky email addresses before campaigns are sent. This helps reduce bounce rates, prevent spam complaints, and protect sender reputation. As a result, my email campaigns perform better, inbox placement improves, and I save time and cost by targeting only valid contacts. ### 9. Always verify the email list if the list is more than 6 months old and it is a huge list **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Computer Software **Reviewed Date:** January 22, 2026 **What do you like best about ZeroBounce?** What I like most about ZeroBounce is how dependable it feels when you’re working with email at scale. It gives you confidence that the list you’re using is actually clean, which makes a huge difference for deliverability and sender reputation. The way it clearly flags invalid, risky, or disposable emails is especially helpful, because you don’t have to guess what to keep or remove before a campaign goes out. Another thing I appreciate is that ZeroBounce goes beyond basic validation. Features like email scoring, blacklist monitoring, and easy integrations make it practical for everyday marketing workflows. It feels like a tool built for real marketers—not just for checking emails once, but for maintaining long-term list health and performance. **What do you dislike about ZeroBounce?** Actually, it is doing best in the industry. So, no complaints. **What problems is ZeroBounce solving and how is that benefiting you?** Email Validation for the existing database and the form level active validation. ### 10. Cleans my Email Lists Quickly & Effortlessly **Rating:** 5.0/5.0 stars **Reviewed by:** Chris W. | Marketing Director, Mid-Market (51-1000 emp.) **Reviewed Date:** January 09, 2026 **What do you like best about ZeroBounce?** I enjoy using ZeroBounce because it makes cleaning my email lists extremely easy! It also protects my sending score because it identifies "abuse" contacts, meaning people that report emails are identified so I can remove them from the list. Once I remove them, it makes it much more likely I'll land in the inbox and not the spam folder. **What do you dislike about ZeroBounce?** The only issue I have with ZeroBounce is that once it validates the lists, it will create numerous lists (i.e. valid, catch-all, abuse contacts). As a result I have to then go in and manually remove the "abuse" contacts, I'd prefer if this step was simply automated in some fashion. **What problems is ZeroBounce solving and how is that benefiting you?** It's improving my sender score, which enhances our email marketing efforts overall. Emailing "Abuse" accounts can severely limit my impact and do lasting damage to the email accounts I use to send out emails. ### 11. Zerobounce is a great tool for improving and understanding email deliverability **Rating:** 4.5/5.0 stars **Reviewed by:** Abi K. | VP of Marketing, Small-Business (50 or fewer emp.) **Reviewed Date:** January 20, 2026 **What do you like best about ZeroBounce?** My favorite part of working with ZeroBounce was meeting with a deliverability specialist who tailored recommendations specifically to our program. It gave us a strong understanding of email deliverability and a clear direction on how to use the platform effectively moving forward. **What do you dislike about ZeroBounce?** At the time our project began, there were no Microsoft 365 seeds, and as a B2B/B2G software company, that was our main priority. However, it was resolved during the project. I would like more seeds in the future, but I can now be confident about our email delivery. **What problems is ZeroBounce solving and how is that benefiting you?** ZeroBounce helped solve our email deliverability challenges by ensuring proper compliance and giving us the tools to keep our email lists clean and healthy. The ability to test content ahead of time gives us confidence that our emails will land successfully on the first send. ### 12. Very easy to use, easy to integrate with platforms, and extremely efficient. **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Marketing and Advertising **Reviewed Date:** January 15, 2026 **What do you like best about ZeroBounce?** I love that it integrates with Klaviyo allowing me to easily add tags and profile properties to my subscribers so I better understand my list. **What do you dislike about ZeroBounce?** Expensive, but worth it! I find for a warm up period that the credits are expensive, however the monthly subscription price and credits makes sense for an ongoing basis. It would be nice if there was some sort of offer or collaboration between esps and zerobounce for when a customer is migrating and needs to clean their entire list. **What problems is ZeroBounce solving and how is that benefiting you?** I came into a company with a very established active email program, but we have seen deliverability problems throughout the year because the program has not been keeping up with best practices. I'm using ZeroBounce to get to know my list and clean up the 5% of emails I know are not delivering. ### 13. best email validation tool I have ever used, amazing, 100% recommendation **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Events Services **Reviewed Date:** December 14, 2025 **What do you like best about ZeroBounce?** High accuracy & clean lists ZeroBounce provides email validation in both bulk and single methods, and reviews generally mention accuracy of 96–99%, which significantly reduces hard bounces and spam-trap emails. This improves sender reputation, enhances inbox placement, and increases the overall ROI of campaigns. Real-time API and easy use By integrating the real-time email validation API into sign-up forms, landing pages, or checkout, you can block invalid or risky emails from the start, preventing bad data from entering the list. The dashboard and workflow are considered very user-friendly, and the integrations (ESP, WordPress, HubSpot, cloud storage, etc.) are also good, making it easy for non-technical teams to operate. Extra deliverability tools Not only validation, but also features like inbox placement testing, blacklist monitoring, server tester, DMARC monitoring, and email warmup are available, which strengthen the entire deliverability stack. Due to data enrichment (appending name, location, etc.) and flexible pricing/credits, it becomes a practical option for enterprise to mid-size marketing teams. **What do you dislike about ZeroBounce?** nothing i have found zero dislike for this best tool ever **What problems is ZeroBounce solving and how is that benefiting you?** High accuracy & clean lists ZeroBounce provides email validation in both bulk and single methods, and reviews generally mention accuracy of 96–99%, which significantly reduces hard bounces and spam-trap emails. This improves sender reputation, enhances inbox placement, and increases the overall ROI of campaigns. Real-time API and easy use By integrating the real-time email validation API into sign-up forms, landing pages, or checkout, you can block invalid or risky emails from the start, preventing bad data from entering the list. The dashboard and workflow are considered very user-friendly, and the integrations (ESP, WordPress, HubSpot, cloud storage, etc.) are also good, making it easy for non-technical teams to operate. Extra deliverability tools Not only validation, but features like inbox placement testing, blacklist monitoring, server tester, DMARC monitoring, and email warmup are also available, strengthening the entire deliverability stack. Due to data enrichment (appending name, location, etc.) and flexible pricing/credits, it becomes a practical option for enterprise to mid-size marketing teams. ### 14. Great tool for business development **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Furniture **Reviewed Date:** January 12, 2026 **What do you like best about ZeroBounce?** ZeroBounce has helped us verify and find professional emails for potential clients in our industry. It is accurate and we like that there are various ways to validate the prospective clients contacts. I especially like the Domain Search feature which helps in limiting the amount of guesses for a company's email format. The fact that you can do pay-as-you-go is really helpful for a small company like us. **What do you dislike about ZeroBounce?** I wish there was a way to see all the previous searches - a sort of history we could download. Maybe I just haven't found it but, in any case, it's definitely not a deal breaker. **What problems is ZeroBounce solving and how is that benefiting you?** ZeroBounce has helped me verify almost 10,000 professional emails for prospective clients. We have significantly grown our customer base without having to deal with unmanageable email marketing bounce rates. ### 15. ZeroBounce: Smooth Setup & Stellar Support **Rating:** 5.0/5.0 stars **Reviewed by:** Adsla Z. **Reviewed Date:** January 08, 2026 **What do you like best about ZeroBounce?** I really find ZeroBounce helpful because it lets me check which emails don't work, so I can remove them. It shows all the different issues with each email, making it easier to decide if I should keep that address. I also appreciate their customer support. One time, I went to run a file but didn't have my monthly credits. The agent was able to resolve the issue immediately and even provided incentives. Setting up ZeroBounce was extremely easy for me, and I learned about it at the Guru Conference. **What do you dislike about ZeroBounce?** I didn't have my January credits today, but that was resolved. **What problems is ZeroBounce solving and how is that benefiting you?** ZeroBounce helps me clean email lists by removing invalid addresses and shows issues with emails, letting me decide if they're worth keeping. Their excellent customer support quickly resolved a credit issue, which was impressive. ### 16. Effortless Email List Cleanup with Quick Support **Rating:** 4.5/5.0 stars **Reviewed by:** Joshua N. | Manager - Data Processing & Quality Management **Reviewed Date:** December 04, 2025 **What do you like best about ZeroBounce?** I use ZeroBounce primarily for cleaning our email lists and contact databases, and I appreciate how it helps us identify outdated information and protects our domain reputation by avoiding the emailing of harmful addresses. The intuitive, easy-to-use interface makes processing straightforward, while the rapid turnaround speed ensures that I get instant results for single or small batches of emails, allowing me to distinguish correct emails from incorrect ones promptly. Moreover, the platform's results are incredibly accurate, which is crucial for maintaining the quality of my email communications. The customer support is exceptional; they are quick to respond and highly effective in solving any issues I encounter, making my experience smooth and efficient. Additionally, I found the initial setup to be very easy, with ample online documentation to guide me through its features. Overall, the reliability and speed of ZeroBounce significantly enhance my email management processes. **What do you dislike about ZeroBounce?** I dislike the issue with greylisted emails as it causes delays. When I submit greylisted emails in a list, it takes time to produce results. Moreover, if I submit them through an individual search, it does not return a result. **What problems is ZeroBounce solving and how is that benefiting you?** ZeroBounce helps me clean my email lists by identifying outdated emails and protecting our domain reputation from harmful emails. It provides instant, accurate results and a reliable, easy-to-use platform with responsive support. **Official Response from Corina Leslie:** > It’s great to hear that ZeroBounce is helping you keep your lists clean and protect your domain reputation. Knowing the interface feels intuitive and that the fast turnaround helps you validate small batches or single emails right when you need them is especially encouraging. We’re also glad the accuracy and documentation have supported you, and that our customer support team has been able to assist quickly whenever needed. Thank you for sharing your experience with greylisted emails. These addresses can take longer because the receiving server temporarily defers validation, which limits the ability to return a definitive result. We understand the delay can be inconvenient, and your feedback helps us continue improving how we communicate and handle these edge cases. It’s wonderful to know the platform is helping you remove outdated emails, avoid harmful addresses, and protect your domain reputation. Reliable results and a smooth experience are exactly what we aim to provide. ### 17. Warm-Up Domains, Contact Enrichment, and Smooth Apollo.ai Integration **Rating:** 5.0/5.0 stars **Reviewed by:** Manuel A. | SDR, Small-Business (50 or fewer emp.) **Reviewed Date:** May 19, 2026 **What do you like best about ZeroBounce?** Warm-up domains, contact enrichment, and integration with Apollo.ai. **What do you dislike about ZeroBounce?** It doesn’t happen often, but sometimes it fails after contact enrichment. **What problems is ZeroBounce solving and how is that benefiting you?** Bounce control for cold emailing campaigns and mailbox warm-up. **Official Response from Corina Leslie:** > Thank you for reviewing us, Manuel. We appreciate it! ### 18. ZeroBounce Review for Marketers: Does It Really Improve Deliverability? **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Consulting **Reviewed Date:** November 29, 2025 **What do you like best about ZeroBounce?** What I like best about ZeroBounce is its high accuracy and reliability in identifying invalid, spam-trap, and risky email addresses. The platform is extremely easy to use, the reports are detailed, and the verification process is fast. Their built-in features—like AI email scoring, real-time validation, and activity data—make it much easier to maintain a clean email list and improve deliverability. Overall, it saves time, reduces bounce rates, and helps campaigns perform better. **What do you dislike about ZeroBounce?** Pricing can be high for large lists, especially compared to budget-friendly competitors **What problems is ZeroBounce solving and how is that benefiting you?** ZeroBounce helps me solve the major problem of high bounce rates and poor email deliverability. Before using it, many emails were landing in spam or bouncing because of invalid or inactive addresses. ZeroBounce identifies invalid, spam traps, catch-all, and risky emails, which keeps my list clean and compliant. As a result, my campaigns perform much better — higher inbox placement, improved open rates, fewer spam complaints, and overall stronger email ROI. It also saves time because I don’t have to manually check or clean lists anymore **Official Response from Corina Leslie:** > Thank you for sharing your experience. We’re thrilled to hear that ZeroBounce has helped improve your email deliverability, reduce bounce rates, and save you time. We understand that pricing can be a consideration for larger lists, and we’re always looking for ways to provide value for all our customers while maintaining the high level of accuracy and reliability you’ve come to expect. We appreciate your support and feedback. ### 19. A Reliable Partner + Essential Tool in Deliverability and Email Validation **Rating:** 5.0/5.0 stars **Reviewed by:** Anne-Marie P. | Marketing Automation Manager, Mid-Market (51-1000 emp.) **Reviewed Date:** September 12, 2025 **What do you like best about ZeroBounce?** ZeroBounce has been a game-changer for our email marketing and marketing automation strategy. As a team that manages communications for multiple franchises and venues, email deliverability and audience trust are critical to our success. ZeroBounce’s validation tools have given us the confidence that the emails we send are reaching real, engaged inboxes. One of the biggest advantages we’ve seen is when targeting past buyers for upcoming events. With ZeroBounce, we know we’re sending to clean, valid addresses, which not only improves engagement but also protects our sender reputation. That extra layer of assurance has helped us execute campaigns with greater precision and impact. Beyond validation, ZeroBounce is intuitive, quick, and integrates seamlessly into our workflow. It’s a solution we trust, and it has become a key part of how we approach high-volume and high-stakes campaigns. I would highly recommend ZeroBounce to ANY team that relies on email as a primary channel for audience engagement. **What do you dislike about ZeroBounce?** I don't have any dislikes! I'm obsessed with the product and its variety of tools as well as the confidence it gives us in executing the types of campaigns we do when ticket sales slump. **What problems is ZeroBounce solving and how is that benefiting you?** ZeroBounce solves the problem of email list quality and deliverability. As a team that manages high-volume communications across multiple franchises and events, we need to be certain our emails are reaching valid, engaged inboxes. Before ZeroBounce, there was always a level of uncertainty when re-engaging past buyers or sending to older lists, especially lists that originate from our Sales teams. By validating and cleaning our data, ZeroBounce ensures we aren’t wasting sends on invalid addresses or risking our sender reputation. This has given us greater confidence in targeting past buyers for upcoming events, knowing we’re delivering messages to real people who are more likely to engage. The result has been stronger campaign performance, reduced bounce rates, and better audience trust in our communications. **Official Response from Corina Leslie:** > Thank you for such a fantastic review, Anne-Marie! We’re thrilled to hear ZeroBounce has become an essential part of your strategy and that it’s helping you reach real inboxes with confidence. It’s especially great to know our tools support your high-volume campaigns, protect your sender reputation, and make it easier to re-engage past buyers successfully. We’re honored to be your trusted partner in deliverability and excited to continue supporting your success! ### 20. Great Experience **Rating:** 4.5/5.0 stars **Reviewed by:** Joshua M. | CEO & Founder **Reviewed Date:** November 25, 2025 **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. **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. **What problems is ZeroBounce solving and how is that benefiting you?** Since implementing ZeroBounce, we’ve seen a measurable improvement in list quality and overall deliverability. That directly translates into higher engagement, stronger inbox placement, and greater ROI across every email channel. For organizations that depend on email to drive growth and serve their customers, that kind of reliability is invaluable. **Official Response from Corina Leslie:** > 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. ### 21. Exceptional Email Validation & Deliverability Tool **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Staffing and Recruiting **Reviewed Date:** November 25, 2025 **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. **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. **What problems is ZeroBounce solving and how is that benefiting you?** ZeroBounce helps us maintain a clean, high-quality email list by removing invalid, spam-trap, and risky addresses before we send any campaigns. This has significantly reduced our bounce rates, protected our sender reputation, and improved overall inbox placement. With cleaner lists, our email performance has improved across the board higher open rates, better engagement, and more reliable delivery to real, active users. The platform also saves us a lot of time by automating validation and providing accurate, actionable insights about our contacts. ### 22. Great platform, helps with Apollo leads **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Industrial Automation **Reviewed Date:** February 15, 2026 **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 **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 **What problems is ZeroBounce solving and how is that benefiting you?** It just validates my Apollo leads tbh. My email campaigns on instantly would auto-stop sometimes because of 7% bounces in the list. Now that just doesn't happen and max it's like 2-3% bounce rate and that's maximum. ### 23. Easy to Use, Fast Validation, and Responsive Support **Rating:** 5.0/5.0 stars **Reviewed by:** Katarína K. | Event Manager, Small-Business (50 or fewer emp.) **Reviewed Date:** April 13, 2026 **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. :) **What do you dislike about ZeroBounce?** Honestly, I didn’t find anything I didn’t like. **What problems is ZeroBounce solving and how is that benefiting you?** ZeroBounce helps us keep our database clean and well maintained :) ### 24. Excellent,and very supportive to my work.. **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Computer & Network Security **Reviewed Date:** February 02, 2026 **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. **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. **What problems is ZeroBounce solving and how is that benefiting you?** ZeroBounce helps me remove invalid, fake, and risky email addresses from my cold email lists. This reduces bounce rates, improves deliverability, and protects my sender reputation. As a result, my cold email campaigns perform better and I waste less time and money emailing bad leads. ### 25. President of Business Development Strategy **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Consulting **Reviewed Date:** December 26, 2025 **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? **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. **What problems is ZeroBounce solving and how is that benefiting you?** Across email platforms we consult, be it Instantly, Constant Contact, Google or Outlook-based accounts, or anything through a CRM, bounces can kill campaigns or lead to questionable URL trust. ZeroBounce has been a great first step to address those issues. ### 26. The Ultimate Tool for Smooth Sender Warm-Up and Safe High-Volume Emailing **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Computer Software **Reviewed Date:** February 02, 2026 **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. **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. **What problems is ZeroBounce solving and how is that benefiting you?** ZeroBounce helps us with email validation, domain warm-up, and reputation recovery across different ISPs. ### 27. How zero bounced has helped me and my business. **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Consulting **Reviewed Date:** December 30, 2025 **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. **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. **What problems is ZeroBounce solving and how is that benefiting you?** 0 ounces, ensuring that messaging for myself and my clients is going out and not being hindered by issues of bounce backs due to bad emails. It truly does provide good peace of mind, knowing that the list has been cleaned and is verified. ### 28. Peace of mind **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Primary/Secondary Education **Reviewed Date:** February 16, 2026 **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. **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. **What problems is ZeroBounce solving and how is that benefiting you?** We used to have high bounce rates in our campaigns; we are dealing with a non-traditional client base. We are replying on gathering information from teachers. Often we rely on very old school methods of gathering emails from teachers with pen and paper. There is lots of room for error. Zero Bounce gives us peace of mind! ### 29. easy and accurate **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Health, Wellness and Fitness **Reviewed Date:** November 14, 2025 **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. **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. **What problems is ZeroBounce solving and how is that benefiting you?** ZeroBounce helps solve the problem of poor email deliverability by cleaning and validating my contact lists. It removes invalid, spam-trap, and risky emails, which protects my sender reputation and prevents campaigns from landing in spam. As a result, my open rates improve, bounce rates stay low, and overall email performance becomes more reliable. It also saves time by automating verification and ensuring only high-quality leads are contacted. **Official Response from Corina Leslie:** > 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. ### 30. Reliable Email Validation That Just Works **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Financial Services **Reviewed Date:** January 21, 2026 **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. **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 **What problems is ZeroBounce solving and how is that benefiting you?** ZeroBounce solves the problem of email uncertainty and list decay ### 31. Zero Bounce Really Helps **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Information Technology and Services **Reviewed Date:** January 23, 2026 **What do you like best about ZeroBounce?** It helps us understand Valid email addresses vs, catch alls vs invalid emails **What do you dislike about ZeroBounce?** I wish it was free but it is really important to use **What problems is ZeroBounce solving and how is that benefiting you?** Helps protect our ESP reputation and keeps us out of trouble. It helps us also go back to list brokers and let them know the quality of their lists. It helps us with our customers as they like that we try and be careful. Helps protect our ESP reputation and keeps us out of trouble. It helps us also go back to list brokers and let them know the quality of their lists. It helps us with our customers as they like that we try and be careful. eputation and keeps us out of trouble. It helps us also go back to list brokers and let them know the quality of their lists. It helps us with our customers as they like that we try and be careful. us also go back to list brokers and let them know the quality of their lists. It helps us with our customers as they like that we try and be caref ### 32. Does an amazingly great job at reducing email bounces **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Research **Reviewed Date:** January 21, 2026 **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. **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. **What problems is ZeroBounce solving and how is that benefiting you?** It solves the problem of sending emails to bad or outdated addresses. Since using ZeroBounce, bounce rates are much lower and we don’t waste time or effort on emails that would fail anyway. ### 33. Zerobounce Keeps Our Email Lists Clean and Deliverable **Rating:** 5.0/5.0 stars **Reviewed by:** Katie W. | Director of Sales and Marketing, Small-Business (50 or fewer emp.) **Reviewed Date:** January 14, 2026 **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. **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. **What problems is ZeroBounce solving and how is that benefiting you?** Helps us to ensure our lists are the highest quality possible and only send emails to verified emails that aren't going to bounce and affect our domain's deliverability. ### 34. Fast & Beginner Friendly **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Real Estate **Reviewed Date:** January 30, 2026 **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! **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. **What problems is ZeroBounce solving and how is that benefiting you?** It's helping me quickly identify problem or likely problem emails. Which is helping my spam score stay low, so my emails are delivered with confidence. ### 35. Cleaning things up and Reactivating Old Leads **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Hospital & Health Care **Reviewed Date:** November 18, 2025 **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. **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. **What problems is ZeroBounce solving and how is that benefiting you?** We have a lot of leads that have not been activated and nurtured over time. Utilizing ZeroBounce has made it easy for us to validate those emails to ensure as we introduce them into new marketing campaigns our bounce rates and other data stay healthy. **Official Response from Corina Leslie:** > 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. ### 36. Accurate and fast email validation at scale **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Capital Markets **Reviewed Date:** November 26, 2025 **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. **What do you dislike about ZeroBounce?** Not much its a great tool and we enjoy the people we work with **What problems is ZeroBounce solving and how is that benefiting you?** ZeroBounce helps us validate large institutional contact datasets and remove invalid or risky emails before they enter our outreach and CRM workflows. This has significantly improved deliverability, reduced bounce rates, and increased the efficiency of our commercial outreach efforts. By starting with cleaner data, our team can focus on the right contacts and avoid wasting time on bad records, which directly supports better pipeline performance and higher conversion. **Official Response from Corina Leslie:** > 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. ### 37. a good tool for checking emails **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Apparel & Fashion **Reviewed Date:** November 29, 2025 **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. **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. **What problems is ZeroBounce solving and how is that benefiting you?** ZeroBounce helps solve the problem of invalid or risky email addresses in my lists. By cleaning and verifying emails, it greatly reduces bounce rates and improves overall deliverability. This means my emails reach more real people, my sender reputation stays strong, and my campaigns perform better with less wasted effort. **Official Response from Corina Leslie:** > 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. ### 38. Valid Email Verification, Interface Shines Despite API Hiccups **Rating:** 3.5/5.0 stars **Reviewed by:** Jeffrey G. | Founder, Small-Business (50 or fewer emp.) **Reviewed Date:** January 23, 2026 **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. **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. **What problems is ZeroBounce solving and how is that benefiting you?** We qualify email addresses with ZeroBounce to ensure they are valid, so we don't email invalid addresses and hurt our email reputation. ### 39. I love zero bounce **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Market Research **Reviewed Date:** February 05, 2026 **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 **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. **What problems is ZeroBounce solving and how is that benefiting you?** ZeroBounce helps solve deliverability issues by identifying invalid emails, spam traps, and risky addresses before they cause problems. This has significantly reduced bounce rates, improved inbox placement, and protected our sender reputation. As a result, our campaigns perform more consistently, with better open rates and fewer deliverability concerns. ### 40. Easy Setup, Reliable Validation **Rating:** 5.0/5.0 stars **Reviewed by:** Nathaniel F. | Mid-Market (51-1000 emp.) **Reviewed Date:** February 10, 2026 **What do you like best about ZeroBounce?** Super easy to setup. Very minimal maintenance required. Reliably validates our emails as they are updated in HubSpot. **What do you dislike about ZeroBounce?** Honestly, I have nothing bad to say about it. I occasionally get reports from users that valid emails are marked invalid, but I still trust ZeroBounce more than those miscellaneous anecdotal reports from ZeroBounce. I rarely have to touch ZeroBounce, and that's a good thing. It just works. Reliably. **What problems is ZeroBounce solving and how is that benefiting you?** Email verification, so we don't hurt our sender score. It holds the reps accountable for gathering real emails, and ensures that marketing efforts are delivering to real people. ### 41. Quality **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in E-Learning **Reviewed Date:** February 08, 2026 **What do you like best about ZeroBounce?** I like best about ZeroBounce is its reliability and accuracy in maintaining email list quality. **What do you dislike about ZeroBounce?** The only downside is the pricing for higher volumes, which can add up as usage scales. A more flexible or startup-friendly pricing tier would make it even more accessible for growing teams. **What problems is ZeroBounce solving and how is that benefiting you?** It helps us solve the problem of poor email deliverability caused by invalid, risky, or inactive email addresses. By keeping our email lists clean and accurate, it protects our sender reputation, improves open and response rates, and ensures our outreach efforts are more efficient and cost-effective. ### 42. ZerBounce is helpful in many ways! **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Marketing and Advertising **Reviewed Date:** October 16, 2025 **What do you like best about ZeroBounce?** Upsides of ZeroBounce is that it is well developed in terms of integrations and pretty great at finding deliverable emails and working phone numbers of potential clients. **What do you dislike about ZeroBounce?** I need to verify this information but I believe when we find our ideal customers in different states yet of the same company, the credits will get charged even for people that we already screened for. In our case we are looking for contractors nationwide. When we find John Doe from ABC Construction, and under different searches find him again, when we clean the data, I believe we get charged to run the same information for verification. For us, its a numbers game.. with hundreds of thousands of contractors we do not have time to remove existing contacts in the database (something we should do) before requesting another cleaning on a new list. Anyway.. thank you for coming to my ted talk. great product regardless. **What problems is ZeroBounce solving and how is that benefiting you?** ZeroBounce is helping us find potential customers. Another revenue stream added to our existing channels. **Official Response from Corina Leslie:** > Thank you for your detailed review! We’re glad to hear ZeroBounce has been helpful in finding valid emails, improving outreach, and supporting your growth efforts. We appreciate your note on duplicate verifications. Our team is always exploring ways to make data processing more efficient, especially for high-volume users like you. We’re grateful for your trust and happy to know ZeroBounce adds value to your business! ### 43. ZeroBounce has been a very reliable email verification tool for our outreach campaigns. **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Information Technology and Services **Reviewed Date:** December 23, 2025 **What do you like best about ZeroBounce?** ZeroBounce has been a very reliable email verification tool for our outreach campaigns. We use it after lead generation to clean lists and reduce bounce rates, and it consistently delivers accurate results. The interface is clear, the processing is fast, and the additional data (catch-all detection, abuse emails, etc.) is very helpful. Definitely a solid solution for anyone running cold email campaigns. **What do you dislike about ZeroBounce?** Pricing can feel a bit high when validating very large lists. Catch-all results can sometimes be conservative and require manual decision-making. **What problems is ZeroBounce solving and how is that benefiting you?** ZeroBounce helps us eliminate invalid and risky emails before outreach, reducing bounce rates and protecting sender reputation. This leads to better inbox placement, more stable campaigns, and safer scaling of cold email efforts. ### 44. CTO **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Primary/Secondary Education **Reviewed Date:** November 20, 2025 **What do you like best about ZeroBounce?** What I like best about ZeroBounce is the peace of mind it gives me knowing that my emails actually reach their intended recipients without bouncing. It saves me time, improves my communication, and ensures my efforts aren’t wasted on invalid or undeliverable email addresses. I can focus on connecting with people rather than constantly worrying about managing bounced messages. **What do you dislike about ZeroBounce?** I dislike a few things about ZeroBounce: Pricing – The service feels expensive for the value provided. The cost structure can be limiting for smaller businesses or projects that require regular email verification. Stuck Loading Issues – Occasionally, the platform gets stuck loading, which interrupts workflow and can be frustrating when trying to quickly validate emails or access reports. Overall, while the service is useful, these drawbacks hurt the experience. **What problems is ZeroBounce solving and how is that benefiting you?** Email marking **Official Response from Corina Leslie:** > Thank you for sharing this. We're glad ZeroBounce gives you peace of mind and helps ensure your emails reach the right people. Knowing your efforts aren’t wasted on invalid addresses is exactly what we aim for. Thank you as well for mentioning the pricing and the loading issues. If you're looking for more value or a more affordable option, you may want to try ZeroBounce ONE. It bundles all our tools into one subscription and can help lower costs: https://www.zerobounce.net/zerobounce-one If you ever run into loading problems again, our support team is always happy to help troubleshoot. We're here for you anytime. ### 45. ZeroBounce has been a game-changer for my email marketing **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Hospital & Health Care **Reviewed Date:** October 10, 2025 **What do you like best about ZeroBounce?** I can't say enough good things about ZeroBounce. This platform does everything I need to keep my email list clean and my sender reputation intact. The email verification is incredibly thorough - it catches invalid addresses, spam traps, and abuse emails before they can damage my deliverability. What really impressed me is how comprehensive the service is. It's not just basic validation; ZeroBounce identifies toxic emails that could land me on blacklists or get my domain blocked by ISPs. The fact that one tool can handle all of this is honestly crazy amazing. I used to worry constantly about ending up on the "naughty list" with email providers, but ZeroBounce gives me complete peace of mind. My bounce rates have dropped significantly, and I'm maintaining a healthy sender reputation. **What do you dislike about ZeroBounce?** Honestly, I haven't found anything I don't like about ZeroBounce. It does exactly what it promises, and does it well. **What problems is ZeroBounce solving and how is that benefiting you?** ZeroBounce solves the critical problem of keeping my email list clean and my sender reputation protected. It identifies and removes invalid emails, spam traps, and abusive contacts before I send campaigns, which prevents me from getting blacklisted or blocked by email providers. The biggest benefit is peace of mind - I can send emails confidently knowing I won't damage my deliverability or end up on spam lists. This means my legitimate emails actually reach my audience's inboxes, my bounce rates stay low, and I maintain a healthy sender score. It's essentially protecting my entire email marketing operation from reputation damage that could take months to recover from. **Official Response from Corina Leslie:** > Thank you for your amazing review! We’re thrilled to hear ZeroBounce has given you peace of mind and helped you protect your sender reputation while keeping your lists clean and healthy. It’s great to know our tools have made such a positive impact on your email performance. We appreciate your trust and kind words! ### 46. Great service. Fast check. **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Marketing and Advertising **Reviewed Date:** January 21, 2026 **What do you like best about ZeroBounce?** ZeroBounce has a solid API and the service works very fast. The email checking process is quick and accurate, which makes it easy to validate lists at scale. **What do you dislike about ZeroBounce?** I really dislike that emails are being deleted from my cabinet — it makes it harder to keep track and reference past work. **What problems is ZeroBounce solving and how is that benefiting you?** ZeroBounce solves the problem of maintaining a clean and valid email database. By filtering out invalid, spam-trap, and risky emails, it ensures our marketing sending service works properly and maintains strong deliverability. As a result, our campaigns reach real inboxes, performance improves, and we avoid sender reputation issues. ### 47. ZeroBounce saved me time, money and stress **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Online Media **Reviewed Date:** December 02, 2025 **What do you like best about ZeroBounce?** The thing I like about ZeroBounce is that it's one of these tools that seems to do everything I needed to do and has totally opened up the way I do email marketing. It's fast it's an expensive and it fits perfectly into my work **What do you dislike about ZeroBounce?** ZeroBounce it's pretty great as it is the one thing I wish it did have was an enhanced domain search. Meaning I would love to type a domain name in and have it give me all of the valid emails from that domain. **What problems is ZeroBounce solving and how is that benefiting you?** ZeroBounce makes it easy for my OCD brain to function. The way I have it configured into my workflow takes two clicks and within a couple minutes I am literally sending emails. It's amazing. **Official Response from Corina Leslie:** > Thank you for sharing this. We're so glad ZeroBounce fits smoothly into your workflow and helps you move from validation to sending in just a couple of clicks. Hearing that it’s opened up the way you approach email marketing means a lot to us! Thank you as well for the feature suggestion. If you ever need anything, we're here to help. ### 48. Multiple plug-and-play integrations **Rating:** 5.0/5.0 stars **Reviewed by:** Matt C. **Reviewed Date:** January 21, 2026 **What do you like best about ZeroBounce?** I like the various easy integration options. No matter how or where you need to validate emails, ZeroBounce has you covered. Also, the ZeroBounce ONE plan is a great deal. **What do you dislike about ZeroBounce?** I have just a few small gripes with ZeroBounce: - I don't like that when using it on Google Sheets, it ignores filled values on the "Status" column when you want to validate a list that was previously partially validated. - The Marketo integration doesn't surface lists properly when you have are more than 300. **What problems is ZeroBounce solving and how is that benefiting you?** Validating new emails upon signup. Validating legacy lists. Revalidating upon soft bounces. ### 49. ZeroBounce works well for our Nonprofit **Rating:** 5.0/5.0 stars **Reviewed by:** Carol G. | Vice President of LAB and Microsoft Admin for the Nonprofit Donation, Small-Business (50 or fewer emp.) **Reviewed Date:** July 21, 2025 **What do you like best about ZeroBounce?** We encourage visitors to labfl.org to request information via our “Contact Us” form at labfl.org. Some of those visitors enter bogus email addresses. ZeroBounce has helped me identify the bogus email addresses as well as out of date (no longer active) DNS or email boxes. I also like that I can see if the recipient has classified us as spam or if the recipient is no longer at the email they provided us. I like that the results are in .csv file(s) because I can easily integrate the ZeroBounce designations in my email database (a spreadsheet). **What do you dislike about ZeroBounce?** I don’t know if features have been changed or if I just didn’t understand features when I started using them this year. Maybe some specific examples would be handy. **What problems is ZeroBounce solving and how is that benefiting you?** We’re able to update our mailing list to avoid sending emails to recipients who are no longer valid or no longer want to receive our messages. **Official Response from Corina Leslie:** > Thank you for the detailed review, Carol! We're glad ZeroBounce is helping you keep your contact list clean and your outreach more effective. We appreciate your note on feature clarity. Specific examples are a great idea, and we’ll keep that in mind! ### 50. Very easy to use (if your CSV upload is formatted correctly) **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Arts and Crafts | Small-Business (50 or fewer emp.) **Reviewed Date:** July 18, 2025 **What do you like best about ZeroBounce?** The process was relatively quick, considering the number of email addresses it had to validate. I like the thoroughness of the report and the ability to generate the AI summary. Customer support via chat was also very helpful when I encountered a confusing snafu when trying to upload the CSV file. This is a very beneficial service. **What do you dislike about ZeroBounce?** I can't say this is a dislike, but I was a bit confused when I first tried uploading the CSV file. I was getting a blank popup window that never populated anything. When I eventually closed it, another small popup came up and disappeared before I could see what it said. It turned out I needed to edit the CSV file. I removed all other columns other than the email column (although this may not have been necessary, just can't have more than 1 email column). Once I realized this was causing the issue and edited the file, it uploaded fine. So maybe I would recommend a clear error message in that original popup, advising an issue with the upload and recommending to ensure the file contains only 1 email column. That would have saved time and allow me to quickly proceed without having to reach out to customer support. **What problems is ZeroBounce solving and how is that benefiting you?** We wanted to clean the email list to improve email deliverability, email domain reputation, and improve advertising and retargeting strategy. **Official Response from Corina Leslie:** > Thanks so much for the detailed review, Lisa! We're glad to hear ZeroBounce helped improve your email deliverability and that our support team was there when you needed them. We really appreciate your note about the upload experience. Clearer error messaging is a great suggestion, and we'll share it with our product team. Thanks again for using ZeroBounce! ## ZeroBounce Discussions - [What is ZeroBounce used for?](https://www.g2.com/discussions/what-is-zerobounce-used-for) - 1 comment, 1 upvote - [can we connect with CRm.](https://www.g2.com/discussions/can-we-connect-with-crm) - 4 comments, 1 upvote - [View ZeroBounce pricing details and edition comparison](https://www.g2.com/products/zerobounce/reviews?section=pricing&secure%5Bexpires_at%5D=2026-05-29+12%3A45%3A25+-0500&secure%5Bsession_id%5D=def41814-e998-4c40-a269-630d2245065f&secure%5Btoken%5D=863c3ff05ba0e1d1e7867d55e473b2488494276288d034108a4472b8b588e6bb&format=llm_user) ## ZeroBounce Integrations - [ActiveCampaign](https://www.g2.com/products/activecampaign/reviews) - [Adobe Journey Optimizer](https://www.g2.com/products/adobe-journey-optimizer/reviews) - [Amazon S3 Glacier](https://www.g2.com/products/amazon-s3-glacier/reviews) - [Apollo](https://www.g2.com/products/apollo-2023-01-11/reviews) - [Apollo.io](https://www.g2.com/products/apollo-io/reviews) - 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