# ZeroBounce Reviews 2026. Verified Reviews, Pros & Cons | Capterra > Is ZeroBounce the right Email Verification Tools solution for you? Explore 582 verified user reviews from people in industries like yours to make a confident choice. Source: https://www.capterra.com/p/169340/ZeroBounce/reviews --- ZeroBounce 4.8 (582) [View alternatives](https://www.capterra.com/p/169340/ZeroBounce/alternatives/) Provider data verified by our Software Research team, and reviews moderated by our Reviews Verification team. [Learn more](https://www.capterra.com/our-story/) * * * Last updated April 2nd, 2026 # Reviews of ZeroBounce Ease of use 4.8 Customer Service 4.7 ## Pros and Cons in Reviews GG Greg G Demand Gen LeadComputer Software, 51 - 200 employeesUsed the software for: 1-2 years. “The service provides strong value for large projects, helped us clean and improve a dated email database, and their customer service has been responsive and helpful whenever needed.“ March 11, 2026 SK Sanu K Marketing Ops and CRM SpecialistEducation Management, 5,001 - 10,000 employeesUsed the software for: Less than 6 months. “For teams that like customizing reports or tailoring the visual layout to their workflow, this might feel a bit restrictive.“ March 12, 2026 MH Matthew H Senior Email Marketing SpecialistSecurity and Investigations, 501 - 1,000 employeesUsed the software for: Less than 6 months. “It is a reliable platform for validating email lists, improving sender reputation, and helping reduce bounce rates before campaigns are sent.“ April 29, 2026 Hp Hrishikesh p Assistant manager marketingInsurance, 51 - 200 employeesUsed the software for: 1-2 years. “The verification process can feel a bit slow when handling very large lists, and some of the advanced features take time to understand if you're a new user.“ December 1, 2025 MH Mili H Lifecycle MarketingHospital & Health Care, 51 - 200 employeesUsed the software for: 1-2 years. “We use it regularly to validate email addresses, improve deliverability, and maintain list quality, and it has been working reliably for our needs.“ January 26, 2026 PS Paulina S Account CoordinatorMarketing and Advertising, 11 - 50 employeesUsed the software for: More than 2 years. “The code emails we get in the inbox after the list is reviewed can be confusing because sometimes I get two codes.“ March 20, 2026 JP Jose P CTOComputer Software, 2 - 10 employeesUsed the software for: More than 2 years. “From a technical leadership perspective, the platform’s roadmap is impressive due to its versatility and the intuitive way it handles events, hooks, and callbacks. Although the pricing is little bit too high as mentioned before, we decided it was a worthwhile investment given the robust features and the operational efficiency it brings to our development workflow.“ March 11, 2026 CY Cooper Y Sales Development Team LeadHospitality, 51 - 200 employeesUsed the software for: 1-2 years. “when the file is processed, it isn't so clean how it comes in a folder with different CSVs.“ February 25, 2026 ## Showing most helpful reviews Showing 1-25 of 582 Reviews Sort by: Most Helpful Rating Company Size Reviewer's Role Length of Use Frequency of Use Jason G. Executive Vice President, Marketing Operations Marketing and Advertising Used the software for: 1-2 years ### "A Must-Have for Email Deliverability. Game Changer for B2B Campaigns" April 14, 2026 5.0 Overall, our experience with ZeroBounce has been extremely positive. It’s become a core part of our email marketing and demand generation process. Before using ZeroBounce, we dealt with inconsistent deliverability and higher bounce rates, which impacted campaign performance. Since implementing it, we’ve significantly improved list hygiene, protected our sender reputation, and driven better results from our email programs. For any organization serious about email marketing - especially in B2B - ZeroBounce is a must-have tool. It removes guesswork from list quality and gives you a much stronger foundation for successful campaigns. Pros ZeroBounce has been a game changer for our email deliverability. As a team running high-volume B2B outbound campaigns, list quality is everything - and ZeroBounce gives us confidence that we’re sending to valid, high-quality contacts. The accuracy of their email validation is excellent, especially around catching invalid, abuse, and risky emails before they impact sender reputation. We’ve seen a noticeable reduction in bounce rates and improved inbox placement across campaigns. The platform is also very easy to use, fast, and integrates seamlessly into our workflow. Upload, validate, download - it’s efficient and reliable. Customer support has been responsive whenever needed, and the turnaround times are solid even with larger lists. Cons The only downside is the cost. While the value is clearly there, it can get expensive at scale, especially when working with large datasets or frequent list cleansing. A more flexible pricing model or volume discounts would make it even more attractive for agencies and teams running ongoing campaigns. Review Source Response from ZeroBounce April 17, 2026 We really appreciate your candid and detailed review, Jason. Thank you so much! DD Divya D. Manager Market Research Computer Software Used the software for: 2+ years ### "Market Research" May 19, 2026 5.0 Overall, my experience with ZeroBounce has been good. I found it helpful for validating emails accurately, especially since there were very few catch-all or unknown results compared to other tools. The platform is easy to use and made the review process smoother. However, I did face occasional login issues at times. Pros I like ZeroBounce because there are no more catch-all or unknown email statuses, which makes the review process much easier and cleaner. Cons What I liked least about ZeroBounce was the occasional login issues, which sometimes interrupted the workflow. Apart from that, the platform worked well and provided accurate email validation results. Switched from [NeverBounce](https://www.capterra.com/p/175437/NeverBounce/) I switched from NeverBounce to ZeroBounce because I was getting a lot of “unknown” results in NeverBounce, which eventually led to email bounces. ZeroBounce provided more accurate validation results with fewer unknown statuses, making the process more reliable. Review Source KW Kristin W. SDR MGR Information Technology and Services Used the software for: 6-12 months ### "Fine for some things, not for others " February 27, 2026 3.0 Not much assistance on the CS side, if any. The user interface is easy enough but overall no improvement in domain health. Pros ZeroBounce was simple enough to set up and had a good starter amount of tools for our team to use as far as warm up. Cons I didn't think there were enough seats for the product cost. My team also didn't see much improvement in domain health or deliverability. Alternatives considered [Clay](https://www.capterra.com/p/237944/Clay/) Reason for choosing ZeroBounce Easier to start right away as opposed to other technologies with longer onboarding time Review Source Response from ZeroBounce March 3, 2026 Thank you for reviewing us, Kristin - we appreciate your feedback! If you need any guidance, please reach out to us anytime. We'd be happy to discuss and determine the reason behind your deliverability issues. SK Sanu K. Marketing Ops and CRM Specialist Education Management Used the software for: Less than 6 months ### "Saved myGame‑Changer for CRM Data Hygiene — Excited to Integrate with HubSpot! 35% " March 12, 2026 5.0 Overall experience has been very good. I have checked 50% of CRM data clean as far. Saved a lot of times to go and check with mail merge every time. You saved 35% of time. Looking forward to integrating zerbounce with hubspot. Thank you Pros ZeroBounce is very easy to use, and the learning curve is minimal. The platform verifies emails quickly and accurately, which helps maintain a clean and healthy database for campaigns. I also like the overall value for money — the pricing is reasonable considering the accuracy and features provided. Uploading files is smooth, and the system handles large lists without any issues. Their customer support team is responsive and helpful whenever I need guidance. One thing I appreciate about ZeroBounce is its clean and straightforward design — everything is organized in a way that makes navigation simple, even for new users. While the platform doesn’t offer extensive design customization, the existing layout is already very polished and efficient. The dashboards are clear, the data is easy to read, and the overall interface keeps the focus on what matters most: verifying emails quickly and accurately. Adding more customization options in the future would be a great bonus, but the current design already delivers a smooth and user‑friendly experience. Cons While ZeroBounce is reliable for verification, the platform can feel a bit limited for email marketers who want deeper insights beyond basic validation. Specially Catch-all, we have around 8000 data in catch all, You guys charging double credits.While ZeroBounce has a clean and user‑friendly interface, the platform offers limited design customization options. Most dashboards and views follow a fixed layout, so users can’t personalize how metrics or verification results are displayed. For teams that like customizing reports or tailoring the visual layout to their workflow, this might feel a bit restrictive. However, the default design is efficient enough that it doesn’t hinder daily tasks — more customization would simply make it even better. Switched from [Clearout](https://www.capterra.com/p/183877/Clearout/)[Kickbox Email Verification](https://www.capterra.com/p/175436/Kickbox/) Earlier, the accuracy of our existing process wasn’t very reliable, so we had started doing manual validation through Google Mail Merge. But as our contact volume grew and we needed to clean a large portion of our CRM data, it became clear that we needed a dedicated verification tool. I took the lead in researching different validation solutions, and based on performance, features, and reliability, I recommended ZeroBounce to our management team. Review Source Response from ZeroBounce March 17, 2026 Thank you for reviewing us, Sanu! We appreciate your feedback. FW Frank W. Founder Marketing and Advertising Used the software for: 6-12 months ### "Super simple and reliable verification " April 21, 2026 5.0 Fantastic experience overall. The team were very helpful setting everything up. It's been simple to use via API and within the interface. Pros Simple to use with lots of great features. The quality is high and it's reliable. You can API with tools like Clay which adds a lot of value. Cons It can take a while for some lists to verify, however this reflects the high quality. Sometime they contact me as though I am not a client already. Alternatives considered [NeverBounce](https://www.capterra.com/p/175437/NeverBounce/) Reason for choosing ZeroBounce Better fit for the business. Felt more relevant to my clients Review Source Response from ZeroBounce May 5, 2026 Thank you so much, Frank! We're delighted to hear about your experience. AS Alvaro S. Owner Marketing and Advertising Used the software for: 6-12 months ### "Email Prospecting" May 10, 2026 5.0 I will say its one of the best in the market, and i've been using several tools similar to zero bounce Pros I think its a powerful tool to help companies reduce their spam when prospecting new regions, helping emails to stay safe from spam folder Cons When they recommend posible email structures, usually it doesnt work and this makes us spend lots of credits which at the end means moner Switched from [FindEmails](https://www.capterra.com/p/240001/FIndEmails/) People recomend to change to this tool, and the single validation works better Review Source Response from ZeroBounce May 13, 2026 Thank you so much for reviewing us, Alvaro. We appreciate your feedback! AA Adrienne A. Electronic Marketing Manager Publishing Used the software for: Less than 6 months ### "Great tool to keep your list clean!" April 30, 2026 5.0 The list verification is quick and while I have not had to contact Customer Service often, when I did they were very helpful. Pros ZeroBounce is a great value and keeps our list clean of spam traps and other problematic emails. Uploading list to verify is quick and easy. Cons I cannot say there is anything I that I find objectionable with ZeroBounce. We have had a very positive experience. Alternatives considered [Kickbox Email Verification](https://www.capterra.com/p/175436/Kickbox/) Reason for choosing ZeroBounce The offered the ad hoc verification that we needed and the price was right Switched from [BriteVerify](https://www.capterra.com/p/219269/BriteVerify/) They no longer were willing to service our account and the level we needed. Review Source Response from ZeroBounce May 5, 2026 Thank you for reviewing us, Adrienne! We appreciate your feedback. DH Daniel H. Demand Generation Manager Education Management Used the software for: 1-2 years ### "Great tool for email marketers" May 18, 2026 5.0 So easy to use. Simple to set up. And ultimately, critical for effective email marketing campaigns today! Pros I've used other solutions for this sort of thing and ZeroBounce is so intuitive and offers some really helpful benefits that other solutions do not. Cons The interface is perhaps not as userfriendly as other options. A little cluttered so that sometimes it's not smooth a user experience as it could be. That would be the only thing I'd really say negatively. But once you know what you're looking for, you know. Alternatives considered [NeverBounce](https://www.capterra.com/p/175437/NeverBounce/) Reason for choosing ZeroBounce It came recommended which ultimately swung it for ZeroBounce. Review Source VK Vicky K. Sales Head Information Technology and Services Used the software for: Less than 6 months ### "Simple and Effective Tool for Email List Cleaning" May 1, 2026 5.0 Overall, a reliable tool that does what it promises. It has helped improve email quality, reduce bounce rates, and make campaigns more effective. A good choice if email deliverability is important for your business. Pros ZeroBounce is very easy to use with a minimal learning curve. The interface is clean, and it quickly helps with email validation and overall email management. It’s especially useful for marketing and sales teams, as it improves deliverability and campaign performance. Features like email scoring and spam trap detection add good value. It also works well in a team setup, making it easy to share clean data across workflows. Cons The pricing can feel a bit high for smaller teams, so value for money may vary depending on usage. Some advanced features take a little time to understand. Customer support is helpful but could be more consistent in response time. Review Source Response from ZeroBounce May 7, 2026 Many thanks for reviewing us, Vicky. We appreciate your feedback! Paul W. Owner Publishing Used the software for: 6-12 months ### "Great experoience with ZeroBounce!" April 21, 2026 5.0 Terrific experience. It gives a lot of detail on each email address so that I can decide on whiches ones I choose to use. Pros I've been using ZeroBounce for months and really love it. I get a lot of detail about each email, and I can make my own decision on which ones to use and which ones to delete. Cons There's not really anything I dislike about it or would like to improve. It does what I want promptly. Review Source Response from ZeroBounce April 22, 2026 Thank you so much for reviewing us, Paul! We appreciate your feedback. AG Alain G. Data Solutions Architect Non-Profit Organization Management Used the software for: 2+ years ### "Excellent API-based solution" November 4, 2025 5.0 Very positive, I would recommend it to anyone else looking for a robust validation email validation service that can be driven through an API. Pros Working with the API is simple and consistently produces valid/valuable results. I can trust the status designations that ZeroBounce returns and can make good business decisions based on them. Cons The time it takes to run deeper evaluations of email addresses. I've had to wait up to a week for results to get returned. Alternatives considered [NeverBounce](https://www.capterra.com/p/175437/NeverBounce/) Reason for choosing ZeroBounce Cheaper, easier to setup, and produced better results. Review Source Response from ZeroBounce November 6, 2025 Thank you so much for the kind review, Alain! It's great to hear you're enjoying the accuracy of our API and how it helps you make better decisions. We also appreciate your feedback on speed and we'll pass it along to the product team. Thank you again for reviewing us! RL Robert L. Director of Analytics Marketing and Advertising Used the software for: 1-2 years ### "Director of Analytics" October 2, 2025 4.0 It is a good service and we will continue to use it. I am hoping that they will improve the catch-all scoring or at least make it faster. Pros It is easy to use and pretty quick to validate. The product is price competitive, though zerobounce seems to be cheaper. Cons It seems like my catch-all scores should be higher and the catch-all scoring now takes 2 days when it used to be faster and I'm still getting the same yield Switched from [NeverBounce](https://www.capterra.com/p/175437/NeverBounce/) Because I didn't want to validate the data from that same source Review Source Response from ZeroBounce October 3, 2025 Thank you for your review! We’re glad you find ZeroBounce easy to use, and well-priced. We appreciate your feedback on catch-all scoring. Our team is actively working on improvements in this area, and we’re excited to share updates soon. KC Kelechi C. Data Manager Research Used the software for: 1-2 years ### "Elite Email Validation with Powerful Automation Features" March 29, 2026 5.0 My experience with ZeroBounce has been genuinely impactful. I started using it because I needed a reliable way to clean large email lists and improve deliverability, and it has consistently delivered on that. What stood out to me was how easy it was to plug into my existing workflow without needing any complex setup. Over time, I’ve come to appreciate that it’s not just about validation—it gives deeper insights into email quality, which has helped me make better decisions with my campaigns. I’ve noticed a clear improvement in deliverability and fewer issues with bounced emails, which has been a big win. Overall, it’s been a dependable tool that I now consider essential for managing email data efficiently. Pros What I appreciated most was how accurate the email validation is—I could immediately see the difference in my bounce rates after cleaning my lists. I also liked that it goes beyond just validation; the additional insights on email quality and activity made my targeting much more effective. The platform itself is straightforward to use, so I didn’t spend time trying to figure things out. I also found the automation features and API really useful for streamlining my workflow, especially when handling large datasets. On top of that, whenever I needed help, the customer support team was responsive and actually helpful. Cons One downside for me was the pricing—it’s definitely more on the premium side, so it might feel a bit expensive if you’re working with a tight budget or just starting out. Also, while the platform is generally easy to use, some of the more advanced features took me a bit of time to fully understand and use effectively. Lastly, if you’re working in a larger team, you might notice that the collaboration features aren’t as strong as some other tools, so you may need to rely on additional systems for that. Review Source Response from ZeroBounce April 2, 2026 Thank you for reviewing us, Kelechi, and for your thoughtful feedback! It's great to hear ZeroBounce has been helping you reduce bounces and improve deliverability. KL Kaya L. Lead Team Consumer Services Used the software for: 1-2 years ### "High-Quality Email Validation" September 16, 2025 5.0 Overall, ZeroBounce proved to be a reliable and effective email validation solution that significantly improved our email deliverability and campaign performance. While the pricing is higher than some alternatives, the accuracy and quality of service justify the cost for businesses that prioritize email marketing success. The excellent customer support made implementation smooth, and the platform's comprehensive features go beyond basic validation to provide real value for email marketers who need dependable results. Pros ZeroBounce delivers exceptional accuracy with their email validation service, and their customer support team is incredibly responsive and knowledgeable whenever I needed assistance. The platform is user-friendly with seamless integrations, and I appreciate that they don't charge for unknown results, making it cost-effective for maintaining clean email lists. Cons The pricing can be steep for small businesses, especially at lower volume tiers, making it a significant investment for companies with limited marketing budgets. Processing speeds can also be slower compared to some competitors, which might be frustrating when you need quick turnaround times for large email lists. Review Source Response from ZeroBounce October 13, 2025 Thank you for your thoughtful and detailed review, Kaya! We’re thrilled to hear ZeroBounce has helped improve your deliverability and campaign performance. Thank you for your feedback on pricing and speed - if you’re looking for a more cost-effective, all-in-one option, you may want to explore ZeroBounce ONE, our subscription that includes all of our tools under one plan: https://www.zerobounce.net/zerobounce-one We’re grateful for your trust in us and happy to know ZeroBounce continues to bring real value to your email marketing. DL Dominik L. CTO Marketing and Advertising Used the software for: 2+ years ### "Recommending Zerobounce" January 15, 2026 5.0 I've been using Zerobounce for over 2 years, it's a perfect tool for email validation, and the support is very helpful. Pros The ease of integration. It took a couple of minutes with the help of AI to build the integration. Also, the support responds instantly and always been able to help. Cons I don't have much to say, it does what it's supposed to do in a good way. I'm using the email validation, not sure about other tools, but I believe they are keeping the standard across all platforms. Review Source Response from ZeroBounce January 16, 2026 We really appreciate your review, Dominik! It's wonderful to hear that you got the support you needed and that you've been with us for more than two years. Thank you! MA Mary A. Senior Lead Generation Specialist II Outsourcing/Offshoring Used the software for: 6-12 months ### "Efficient Email Validation with Easy Automation" April 6, 2026 5.0 Overall, my experience with ZeroBounce has been very positive. It has significantly helped my team improve email quality by identifying invalid or risky addresses, which in turn supports better deliverability and campaign performance. It’s a reliable tool for maintaining a clean and effective email database. Pros ZeroBounce is very easy to set up for automation, which saves me a lot of time since I don’t have to log in and manually run email validations. The platform is also user-friendly—navigation across tabs is intuitive, and the data is presented in a way that’s easy to read, understand, and analyze. This makes it efficient for both daily use and reporting. Cons One limitation is that automated validation can only be scheduled to run once per day. Having more flexibility—such as multiple runs per day or real-time triggers—would make the tool even more powerful, especially for teams handling high volumes of data. Review Source Response from ZeroBounce April 15, 2026 Thank you for reviewing us, Mary! We appreciate your feedback. ZA Zara A. Consultant - Marketing Online Media Used the software for: 2+ years ### "Zerobounce - for hassle free email validation" March 18, 2026 5.0 Great customer support. Value for money. Easy integration. And since its used so widely a lot of queries are answered at various forums. Pros Accuracy, decent integration, good for marketing and website forms validation. It gave us in real time checking the work emails and discarding spams/free domains. Cons Little unclarity about the credits can be used till when. I have like many credits left but still dont understand till when i can use it. Review Source Response from ZeroBounce March 20, 2026 Thank you so much for reviewing us, Zara! We're glad to hear you're enjoying ZeroBounce. Your credits never expire - you can use them at your own convenience. We appreciate your feedback! MH Mili H. Lifecycle Marketing Hospital & Health Care Used the software for: 1-2 years ### "Lifecycle Marketing" January 26, 2026 5.0 Overall, our experience with ZeroBounce has been very positive. We use it regularly to validate email addresses, improve deliverability, and maintain list quality, and it has been working reliably for our needs. Pros ZeroBounce is very easy to use and provides clear, actionable results. The platform is intuitive, delivers reliable outcomes, and the sync with our systems has been smooth and consistent without issues. Cons The main drawback is receiving an “unknown” result for some emails. It can be a bit frustrating when a definitive valid or invalid status is not provided, especially when cleaning larger lists. Review Source Response from ZeroBounce February 4, 2026 Thank you for the feedback, Mili! We hope you continue to enjoy using ZeroBounce. LS Lyubov S. Marketing automation manager Information Technology and Services Used the software for: 6-12 months ### "Very accurate validation, the tool works good" February 10, 2026 5.0 Very satisfying, we have great results so far. The integration works well, but adjusting the daily sync could be improved. Pros The integration with HubSpot is very easy, and the data we get is pretty accurate. There are plenty of ad hoc and manual validations you can do. We managed to improve our domain health score while using ZeroBounce. Cons There is not a lot of flexibility if you want to automate more precisely. For example setting the exact hour that you want the dailly validations to happen OR to have validations as soon as a contact is added to a list in Hubspot. Review Source Response from ZeroBounce February 17, 2026 We really appreciate your feedback, Lyubov - thank you! We'll pass it along to the team. GM Greg M. eCommerce, Digital Marketing Director Health, Wellness and Fitness Used the software for: 1-2 years ### "ZeroBounce is a critical tool in our Email Marketing ecosystem!" March 17, 2026 5.0 Overall, ZB is a valuable part of our email marketing ecosystem! They have powerful tools and helpful support to make sure we get all the value from their services. Pros ZeroBounce helps us verify and clean our email list. We have every email address run through ZeroBounce to validate before entering our list. We also used their email deliverability tools, which helped us greatly. Cons Not knowing a lot about email marketing technical setup, I had to figure it out. The tools do a lot but I was unsure what I needed and how to use it. But their support was helpful! Review Source Response from ZeroBounce March 20, 2026 Thank you for your kind review, Greg! We hope you continue to get a lot of value out of ZeroBounce. VR Verified Reviewer Lead Generation Specialist Marketing and Advertising Used the software for: 6-12 months ### "Less Time, Less Expense" March 2, 2026 5.0 Pros Using ZeroBounce, lessen my working hours. I am more comfortable with using this platform for reporting and managing my time. I can easily upload a file and wait for the results in just a couple of seconds. Cons customer service! need to spend some time waiting for the response, and wasting our time. Also, the price is not that high. Review Source Response from ZeroBounce March 12, 2026 Thank you for reviewing us! We appreciate your feedback. TG Tom G. Sales Development Rep Information Technology and Services Used the software for: 1-2 years ### "ZeroBounce is IT!" October 28, 2025 4.0 As mentioned above, my overall experience has been a positive one. The interface is user friendly and easy to navigate. We have seen positive results in regards to the email address quality we send to. I would highly recommend ZeroBounce. Pros ZeroBounce has helped us see a significant decrease in our bounce rate. It's simple to use. The customer service is always very helpful (via chat) and often will proactively provide promo codes. Cons I can't think of any immediate cons I have with ZeroBounce. My experience while using the program has always been positive. Review Source Response from ZeroBounce October 29, 2025 Thank you for your review, Tom! We’re so glad to hear ZeroBounce has helped you reduce bounce rates and that our support team has been proactive and helpful. It’s great to know the platform has been easy to use and delivered positive results - we truly appreciate your recommendation! DK Dev K. Salary Champion Financial Services Used the software for: 6-12 months ### "Fabulous and amazing" March 9, 2026 5.0 I am using this platform since 7 to 8 month and i am getting awesome result on email verification . and it helps me to save from being fraud . Pros Its provide the genuine result which is amzing , and it is easy to use for me and my team also . amazing Cons I dont think it have any cons which i have faced with zerobounce . because it have potential to check the things in right way Review Source Response from ZeroBounce March 12, 2026 Thank you for reviewing us, Dev! We appreciate your feedback. SB Steve B. Director of Email Marketing Marketing and Advertising Used the software for: 1-2 years ### "Definitely Recommend ZeroBounce" September 2, 2025 5.0 Overall, the experience is great. I use it for all 20+ of my clients and I also recommend it to anyone who asks about email validation tools. Pros I love that there's a great Klaviyo integration that I use all the time. Everything is very logical, and easy to understand. The customer service is always a click away. Cons I think the thing I like least is the fact that I find the Warmup tool hard to work with as an agency. I need to gain access to the client's inbox, but they are unsure how to give me the access I need. I would use that feature more if it were easier for me as a third-party. Review Source Response from ZeroBounce September 8, 2025 Thank you for your review. Steve! We’re so glad the Klaviyo integration and our support team have been helpful, and it means a lot that you use ZeroBounce across 20+ clients. We appreciate your feedback on the Warmup tool, We’re always looking for ways to make it easier for agencies to use, and your input helps us improve. Thanks for recommending us! Karthik H. Digital Marketing Manager Computer Hardware Used the software for: 2+ years ### "Reliable Email Validation That Delivers Results" August 11, 2025 5.0 My overall experience with ZeroBounce has been very positive. It’s a dependable platform that has helped me maintain high email deliverability and protect our sender reputation. The validation process is fast and accurate, and the ability to detect spam traps and abuse emails has been especially valuable. While there are a few areas for improvement, the core functionality is solid and the support team is responsive. It’s a tool I have and would recommend to others. Pros ZeroBounce has been a reliable and efficient tool for email validation. The interface is intuitive, results are fast. Results and pretty spot on. Cons While ZeroBounce is a powerful tool, one drawback is that validation results expire after 30 days, which can be inconvenient if you need to revisit older lists. Review Source Response from ZeroBounce August 28, 2025 Thank you for your thoughtful review, Karthik! We’re delighted ZeroBounce has helped you maintain strong deliverability. Your feedback on data expiration is noted - it’s tied to our security standards, but we’ll keep looking for ways to make it more convenient. We truly appreciate your recommendation! 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