--- title: Kickbox Reviews meta_title: 'Kickbox Reviews 2026: Details, Pricing, & Features | G2' meta_description: Filter 636 reviews by the users' company size, role or industry to find out how Kickbox works for a business like yours. aggregate_rating: rating_value: 4.5 review_count: 636 scale: '5' date_modified: '2026-07-15' parent_category: name: Collaboration & Productivity url: https://www.g2.com/categories/collaboration-productivity --- # Kickbox Reviews **Vendor:** Ziff Davis **Category:** [Email Verification Software](https://www.g2.com/categories/email-verification) **Average Rating:** 4.5/5.0 **Total Reviews:** 636 ## About Kickbox Kickbox is a leading email verification solution, empowering businesses to verify email addresses, whether one by one in real-time or in bulk—ensuring you only send to valid and responsive email contacts. Kickbox's real-time email verification API seamlessly integrates with various web forms and touchpoints, from account sign-ups and lead capture forms to your CRM or e-POS system. By implementing this additional layer of security, the API efficiently sifts out fake or invalid email addresses on the spot. This way, only deliverable emails make their way into your database, ensuring you never miss an opportunity to connect with your audience. Highlighted Features: Real-Time & Bulk Verification: Kickbox aids in cleaning your email lists and validating addresses added to your database. Seamless Integration: The real-time email verification API effortlessly integrates into web forms, capturing email data from account sign-ups to CRM platforms. Typos? No Problem: The Kickbox API adeptly handles typos by prompting users to rectify errors in real-time, ensuring a seamless connection with your audience. Reliable & Accurate Results: Kickbox's results prioritize reliability and accuracy, whether you're verifying emails individually or in bulk. Compliance & Data Protection: Kickbox leads in compliance and data protection and adheres to best practices. Sendex™ Scores: The dashboard serves as your command center, offering a proprietary quality score for every email and providing additional metrics for strategic decision-making. Community & Support: Kickbox provides easy-to-follow documentation, top-notch support, and professional deliverability consulting solutions. Why Opt for Kickbox? Kickbox is more than just a service; it's your strategic partner to help you maximize your email goals and make more money with email. With a commitment to compliance, user-friendly integration, and customer success, Kickbox ensures your emails not only land in inboxes but also maximize your marketing ROI. ## Kickbox Pros & Cons **What users like:** - Users love the **ease of use** of Kickbox, appreciating its simplicity and user-friendly functionalities for email verification. (129 reviews) - Users value the **email verification** feature of Kickbox for efficiently maintaining clean and deliverable email lists. (49 reviews) - Users appreciate the **user-friendly interface** of Kickbox, making list uploading and validation a breeze. (45 reviews) - Users commend the **easy setup** of Kickbox, allowing quick implementation and seamless integration into their processes. (40 reviews) - Users value the **accuracy of data** from Kickbox, noting clear results and ease of use. (39 reviews) - Users value Kickbox's **affordability** , allowing small businesses to efficiently manage email lists without overspending. (37 reviews) - Users value the **fast data retrieval** and **ease of use** of Kickbox, enhancing their email management experience. (35 reviews) - CRM Integration (26 reviews) - Users value the **easy integrations** of Kickbox, seamlessly connecting with systems like Hubspot for efficient workflows. (25 reviews) - Reliability (24 reviews) **What users dislike:** - Users find Kickbox **too expensive** , struggling with pricing and preferring different credit subscription options. (25 reviews) - Users express concern about **insufficient information** , leading to confusion about functionality and risky email categorization. (13 reviews) - Users report **data accuracy issues** with Kickbox, citing many addresses as risky or unknown, impacting confidence in deliverability. (11 reviews) - Users note the need for **improvement in domain validation** and enhanced reporting features to better manage sign-ups. (11 reviews) - Users note **missing information** regarding email statuses and lack of insights, complicating the decision-making process. (10 reviews) - Users often face **email verification issues** , including false invalid flags and unclear unknown status, causing frustration. (9 reviews) - Credit System Issues (7 reviews) - Accuracy Issues (6 reviews) - Slow Loading (6 reviews) - Difficulty (5 reviews) ## Kickbox Reviews ### 1. Boosts Campaign Performance with Reliable Email Verification **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Construction | Mid-Market (51-1000 emp.) **Reviewed Date:** May 07, 2025 **What do you like best about Kickbox?** I like using Kickbox because it helps my email campaigns perform better by ensuring email verification, leading to lower bounce rates and higher open and delivered rates. I also appreciate the integration with HubSpot, which makes it very easy for me to find and import lists. **What do you dislike about Kickbox?** I think it would be helpful with knowing if there's duplicate email addresses in the list. **What problems is Kickbox solving and how is that benefiting you?** I use Kickbox to verify email addresses, which reduces bounce rates, increases open and delivery rates, and makes my campaigns perform better. ### 2. Quick, Easy to Use and a Great Value **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Computer Networking | Small-Business (50 or fewer emp.) **Reviewed Date:** July 08, 2026 **What do you like best about Kickbox?** Fairly easy and a good value. Quick and easy to use. **What do you dislike about Kickbox?** They denied my list at first which was annoying since that is what I was using them for - to verify my list. **What problems is Kickbox solving and how is that benefiting you?** They helped me fine tune my email list to make sure emails are going to be delivered. ### 3. Email Verification Assistance **Rating:** 5.0/5.0 stars **Reviewed by:** Jamie N. | Business Operations Manager, Small-Business (50 or fewer emp.) **Reviewed Date:** July 22, 2025 **What do you like best about Kickbox?** The most helpful part about kickbox is that it identifies the emails that are just just bottom-line undeliverable, so I can delete those right away. This helps me keep my CRM up-to-date. I like that they categorize the results of the verification in undeliverable, unknown, risky, and deliverable. It's easy to use and affordable. Uploading lists of contacts onto the platform is easy as well. **What do you dislike about Kickbox?** There's not much I don't like about Kickbox... It helps me get what I need from an email verification service. **What problems is Kickbox solving and how is that benefiting you?** One of my main goals at my job is keeping our CRM up-to-date so that our email send percentages are positive. Every so often, I like to check against the emails that are often rejecting - and why that is. Sometimes people retire, domains change, domains rejects our sends, etc. Kickbox helps me categorize which is which and help me keep our CRM clean. ### 4. Quick and Accurate, But Occasional Glitches **Rating:** 3.5/5.0 stars **Reviewed by:** Verified User in Accounting | Small-Business (50 or fewer emp.) **Reviewed Date:** July 23, 2025 **What do you like best about Kickbox?** I like the speed of data cleansing and its accuracy when using Kickbox. The ability to upload lists easily and the feature for expiration emails are also nice. I find the initial setup quite easy. **What do you dislike about Kickbox?** Sometimes it glitches, and my list never fully scrubs. It has happened twice before, and we have needed support help both times. I also don't think downloading excels is that easy. **What problems is Kickbox solving and how is that benefiting you?** I use Kickbox for scrubbing lists in email marketing. It cleanses data and lowers bounce rates, which is really helpful. ### 5. Efficient and Easy to Use for Contact Verification **Rating:** 3.5/5.0 stars **Reviewed by:** tasio r. | Small-Business (50 or fewer emp.) **Reviewed Date:** January 20, 2026 **What do you like best about Kickbox?** I like that Kickbox is easy to use and it really helps me on a daily basis. It is a simple utility that saves my time and that of my colleagues, which improves our productivity. I also appreciate its quick contact verification, which is especially useful. **What do you dislike about Kickbox?** I don't find any error for now. **What problems is Kickbox solving and how is that benefiting you?** Kickbox helps me process leads by quickly verifying contacts. It is easy to use, saves my time and that of my colleagues, improving our daily productivity. ### 6. Kickbox: Essential Tool for Clean Email Lists **Rating:** 5.0/5.0 stars **Reviewed by:** Ashley L. | Small-Business (50 or fewer emp.) **Reviewed Date:** February 21, 2026 **What do you like best about Kickbox?** I like knowing I'm using a clean list—and I can achieve that quickly with Kickbox. It's made our email sends better by improving our reputation and reducing instances of hard bounces. The initial setup was very easy, taking only a few minutes. **What do you dislike about Kickbox?** No complaints! **What problems is Kickbox solving and how is that benefiting you?** Kickbox helps us sort out non-working emails, reducing high bounce rates, saving time, cost, and protecting our reputation. It ensures clean email lists quickly, improving email deliverability and reputation by minimizing spam box landings. ### 7. Straightforward and reliable email verification at scale **Rating:** 5.0/5.0 stars **Reviewed by:** Shrutidhara K. | Marketing Content Specialist, Mid-Market (51-1000 emp.) **Reviewed Date:** July 14, 2025 **What do you like best about Kickbox?** Kickbox is incredibly easy to integrate and use, whether through its API or dashboard. The verification process is fast, accurate, and scalable, which makes it perfect for high-volume email list cleaning. I especially appreciate the detailed results it returns—distinguishing between invalid, risky, disposable, or role-based emails—so I can take targeted action. The real-time verification feature has helped improve our deliverability and sender reputation significantly. **What do you dislike about Kickbox?** While the platform is highly effective, the pricing can add up quickly for businesses verifying large volumes of emails regularly. Also, occasionally, some emails are marked as "risky" without enough clarity on what that means or how to handle them. It would be helpful to have more actionable guidance or deeper insights into these ambiguous cases. **What problems is Kickbox solving and how is that benefiting you?** Kickbox helps us maintain a clean, high-quality email list by identifying invalid, disposable, and risky email addresses before sending campaigns. This directly solves the problem of poor email deliverability, high bounce rates, and damaged sender reputation. By removing bad addresses proactively, our emails reach real people more reliably, leading to better engagement, improved campaign performance, and higher ROI. It also helps us stay compliant with anti-spam regulations and keeps our CRM data clean and actionable. ### 8. Simple and easy to use. **Rating:** 4.0/5.0 stars **Reviewed by:** Stephen N. | ERP Analyst, Small-Business (50 or fewer emp.) **Reviewed Date:** October 21, 2025 **What do you like best about Kickbox?** I appreciate how simple and transparent Kickbox is. The most difficult part about this was filtering out any emails that we already knew were spam/trash, or completely valid. Even then, I know that these emails would have be sorted properly. **What do you dislike about Kickbox?** The part I like least about Kickbox is that the pricing is a bit arbitrary. I think the cost could be linear to the number of emails processed. **What problems is Kickbox solving and how is that benefiting you?** We were centralizing a lot of our operations and we had a lot of emails to filter through, so we went to Kickbox to filter out those emails in one fell swoop. ### 9. Easy Email List Cleaning, Great Value—But Credit System Could Improve **Rating:** 4.5/5.0 stars **Reviewed by:** Robby G. | Marketing Coordinator, Small-Business (50 or fewer emp.) **Reviewed Date:** October 21, 2025 **What do you like best about Kickbox?** Kickbox is very simple to use and does a great job of cleaning email lists. It segments contacts by risk, allowing you to choose quantity vs quality. The price is reasonable, and I save money down the road by narrowing down my list before I send out my eblasts. The dashboard is simple yet informative as well. **What do you dislike about Kickbox?** Verification credits can only be purchased in bulk, so I always end up with more than I need. **What problems is Kickbox solving and how is that benefiting you?** Kickbox cleans up email lists before we send them out to avoid high bounce rates and wasting money on sending emails to unverified leads. ### 10. More Thorough Email List Validation Than Anything Else We Tried **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Computer Software | Small-Business (50 or fewer emp.) **Reviewed Date:** July 14, 2026 **What do you like best about Kickbox?** More thorough email list validation than other products we tried. **What do you dislike about Kickbox?** The pricing was higher than some other similar services. **What problems is Kickbox solving and how is that benefiting you?** Email list validation for IP warming. We needed to ensure our list was accurate to achieve high deliverability with a new email service provider. ### 11. Simple to Use and Fast! **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Government Administration | Small-Business (50 or fewer emp.) **Reviewed Date:** April 29, 2026 **What do you like best about Kickbox?** It is simple to use and operates quickly. **What do you dislike about Kickbox?** They charged my credit card but then did not send out my list for verification. It wasn't until I threatened reporting them as **What problems is Kickbox solving and how is that benefiting you?** They helped me verify email addresses before sending an email campaign. ### 12. Essential tool for cleaning external email list and getting better success rate. **Rating:** 3.5/5.0 stars **Reviewed by:** Verified User in Pharmaceuticals | Mid-Market (51-1000 emp.) **Reviewed Date:** February 09, 2026 **What do you like best about Kickbox?** It’s very easy to upload and verify a list, and then export the results. **What do you dislike about Kickbox?** I wish it could integrate with other tools like Mailchimp, so I don’t have to export the list from there, manually upload it here, and then export the results again just to manually update everything in Mailchimp. **What problems is Kickbox solving and how is that benefiting you?** We get a lot of external emails, and Kickbox helps us clean them up before sending out campaigns and notifications. This helps improve our open rate and reduces bounce-backs. ### 13. Simple handling, fast and reliable email verification – Kickbox convinces **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Mechanical or Industrial Engineering | Mid-Market (51-1000 emp.) **Reviewed Date:** February 11, 2026 **What do you like best about Kickbox?** Kickbox impresses with its simple and straightforward handling. The verification of email addresses is quick and reliable, which significantly eases the work. Particularly noteworthy is the transparent billing system, which is comprehensible at all times. Overall, it is a great tool that delivers on its promises. **What do you dislike about Kickbox?** The testing costs could be somewhat cheaper. However, through a Black Friday deal, we were able to keep the costs in check. **What problems is Kickbox solving and how is that benefiting you?** Kickbox helps us keep our email addresses up to date and avoid unnecessary immediate bounces in email marketing. ### 14. Easy to Use on the Web with Smooth API Integration **Rating:** 4.5/5.0 stars **Reviewed by:** Ashish K. | Solution Architect, Mid-Market (51-1000 emp.) **Reviewed Date:** February 13, 2026 **What do you like best about Kickbox?** Its really easy to use on the web and also easy to integrate using API **What do you dislike about Kickbox?** Its ability to segregate billing by API key and ability to create a resellable product **What problems is Kickbox solving and how is that benefiting you?** Its helping me generate clean deliverable mailing lists ### 15. Effortless, Reliable, and Essential for My Business **Rating:** 5.0/5.0 stars **Reviewed by:** Jason H. | Creative Design Director, Small-Business (50 or fewer emp.) **Reviewed Date:** November 20, 2025 **What do you like best about Kickbox?** I love the service and the fact that it runs in the background with no interference. I also like how the price is definitely worth it. I also like that Kickbox does exactly what they say they do. **What do you dislike about Kickbox?** There isn't a thing that I dislike about kickbox, other than the fact Kickbox has become a must have in my business. **What problems is Kickbox solving and how is that benefiting you?** I was tired of getting spam emails and Kickbox completely fixes this issue by checking the email address! ### 16. A Balanced Review of Kickbox: Benefits and Drawbacks **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Information Services | Small-Business (50 or fewer emp.) **Reviewed Date:** January 20, 2025 **What do you like best about Kickbox?** Kickbox has been an incredibly reliable email verification tool for our team. The accuracy of the results is impressive, and it has significantly reduced our bounce rates. The platform is very easy to use, fast, and provides clear classifications such as valid, risky, and invalid, which helps us clean our lists with confidence. We also appreciate the seamless API integration and real-time verification options. Their support team is quick and helpful whenever we need assistance. Overall, Kickbox has improved the quality of our outreach and protected our sender reputation. Highly recommended for anyone who manages large email lists or runs email campaigns regularly! **What do you dislike about Kickbox?** I still remain with the same review where One of the main drawbacks is the pricing structure, which can become a bit expensive for smaller businesses or those with large email lists. The cost-per-verification can add up quickly, especially if you need to clean large datasets frequently **What problems is Kickbox solving and how is that benefiting you?** Invalid or Outdated Email Addresses Poor Sender Reputation Time-Consuming Email List Cleaning Managing Risky Email Data ### 17. We get in the inbox consistently. **Rating:** 5.0/5.0 stars **Reviewed by:** David A. | Owner, Small-Business (50 or fewer emp.) **Reviewed Date:** December 17, 2025 **What do you like best about Kickbox?** It is simple, fast, detailed and cost effective. **What do you dislike about Kickbox?** All good. Nothing we dislike. Maybe give us some credits for referring others. :) **What problems is Kickbox solving and how is that benefiting you?** Email lists get stale, and you don't always know the source or if the customer is still active. Kickbox gives you the status of each email so you don't mess up your email deliverability. It prevents problems with email software. ### 18. Easy to Use, Handy Automation That Just Works **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Accounting | Small-Business (50 or fewer emp.) **Reviewed Date:** April 23, 2026 **What do you like best about Kickbox?** It's easy to use, very handy, automated. **What do you dislike about Kickbox?** Nothing to add—I'm happy with the tool. It does what I expect. **What problems is Kickbox solving and how is that benefiting you?** We validate our prospects’ email addresses to make sure we’re contacting the right people and not wasting time. ### 19. Easy to Use, Straightforward, and Reliable **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Computer Software | Small-Business (50 or fewer emp.) **Reviewed Date:** July 13, 2026 **What do you like best about Kickbox?** Ease of use, straightforward process and reliability. **What do you dislike about Kickbox?** I don’t really have anything critical… the UX/UI of the app could be improved a bit I suppose. **What problems is Kickbox solving and how is that benefiting you?** Making sure the email list I have is accurate. ### 20. User-Friendly Interface, But Unknown Email Statuses Can Frustrate **Rating:** 4.0/5.0 stars **Reviewed by:** Jack B. | Marketing Specialist, Mid-Market (51-1000 emp.) **Reviewed Date:** October 23, 2025 **What do you like best about Kickbox?** Easy to use interface, key when importing lists of contacts as this is usually a very time-pressing activity to enable sellers. **What do you dislike about Kickbox?** I find that a large percentage of contacts often produce 'unknown' email status which is quite frustrating as it's unclear whether to send to these or not. **What problems is Kickbox solving and how is that benefiting you?** When our team try to contact large lists of contacts, maybe for a webinar invite for ex, we need to know that we're not sending a lot of emails to old/outdated email accounts as this will hurt our deliverability rate. ### 21. Awesome tool! **Rating:** 5.0/5.0 stars **Reviewed by:** Farrukh S. | Outreach Specialist, Small-Business (50 or fewer emp.) **Reviewed Date:** January 21, 2026 **What do you like best about Kickbox?** Works like a charm! This tool is definitely worth a try. Has worked greatly for the verification of all of my emails. **What do you dislike about Kickbox?** This tool is perfect! There is no dislike from my side. **What problems is Kickbox solving and how is that benefiting you?** Has helped me with the verification of all of my emails. ### 22. Outstanding Support and Improved Integration, But Some Past Concerns **Rating:** 3.5/5.0 stars **Reviewed by:** Verified User in Financial Services | Mid-Market (51-1000 emp.) **Reviewed Date:** November 10, 2025 **What do you like best about Kickbox?** Kickbox's customer support has made a big impression on me. Hank Hoffmeier went above and beyond helping us with our real-time HubSpot integration. When we hit a wall troubleshooting, he didn't just leave us hanging—he took it back to his team, worked through the problem, and then proactively reached out with the solution. The fact that he remembered to circle back says everything about their commitment to customers. **What do you dislike about Kickbox?** Now that we have real-time integration, we're not seeing some of the lags and inaccuracies we were seeing before. Without it, we were questioning whether we should pay more for another service for the peace of mind. **What problems is Kickbox solving and how is that benefiting you?** We're able to protect our sender reputation and guard against unsubscribes. ### 23. Effortless Email Verification **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Computer Software | Mid-Market (51-1000 emp.) **Reviewed Date:** November 11, 2025 **What do you like best about Kickbox?** I really appreciate using Kickbox for email verification because it helps safeguard our company's domain authority and ensures that every email reaches the correct contacts. Their customer support team is very effective and available when needed. There's ease of use, and the tool is easy to implement and integrate with any tools. **What do you dislike about Kickbox?** Nothing as such till now; the only thing I feel is that it shows some relevant email id as risky, but then there is a reason for it, like a firewall. **What problems is Kickbox solving and how is that benefiting you?** Kickbox helps us keep our email lists clean by identifying invalid and risky addresses before we send out campaigns. This has made a big difference in improving our deliverability and open rates. ### 24. User-Friendly and Affordable, But Some Uncertainty with Results **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Computer Software | Small-Business (50 or fewer emp.) **Reviewed Date:** October 23, 2025 **What do you like best about Kickbox?** This product is easy to use, straightforward to set up, and budget-friendly. The recommendations are clear, and the interface is also well designed, making it simple to navigate. **What do you dislike about Kickbox?** It's still too soon to determine how accurate this software is. We haven't yet emailed all the scrubbed contacts that were processed through Kickbox in our email campaigns. A significant portion of the list comes back with an unknown status after using the utility, which isn't surprising, but I was hoping there would be fewer gray-area emails when it comes to deliverability. **What problems is Kickbox solving and how is that benefiting you?** We focus on reducing dead leads in our CRM and cleaning out outdated emails to prevent them from bouncing back and harming our email health. Overall, maintaining good database hygiene is important to us. ### 25. Easy Integration, Quick Support, Automated Top-Offs & Smart Burst Alerting **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Information Technology and Services | Mid-Market (51-1000 emp.) **Reviewed Date:** June 30, 2026 **What do you like best about Kickbox?** Easy integration, quick support, good performance, automated-top offs, ability to detect bursts in usage and configure alerting. **What do you dislike about Kickbox?** The AI review bot they have from G2 sucks **What problems is Kickbox solving and how is that benefiting you?** Allowing me to filter out bad actors from signup ### 26. Kickbox Keeps My Lists Clean and Reliable **Rating:** 5.0/5.0 stars **Reviewed by:** Florida Liberty I. | Marketing Specialist, Small-Business (50 or fewer emp.) **Reviewed Date:** October 07, 2025 **What do you like best about Kickbox?** I’ve been using Kickbox recently and it’s been fantastic. It makes verifying emails quick and easy, and it gives me confidence that my campaigns are reaching real people. The integration with HubSpot was simple and smooth, which really helps keep everything in one place. Overall, it’s a great tool for keeping email lists clean and improving deliverability. **What do you dislike about Kickbox?** I have verified two databases, and so far, I don't have any complaints. **What problems is Kickbox solving and how is that benefiting you?** it makes verifying emails quick and easy, and it gives me confidence that my campaigns are reaching real people. ### 27. Easy Setup and Affordable, But Misses Too Many disposable domains **Rating:** 3.0/5.0 stars **Reviewed by:** Verified User in Financial Services | Small-Business (50 or fewer emp.) **Reviewed Date:** January 09, 2026 **What do you like best about Kickbox?** It is very easy to set up and use. It's inexpensive. Overall it works very well. **What do you dislike about Kickbox?** Misses too many disposable domains. That was the main reason we bought it, to stop users signing up to our platform with disposable domains. Using the Risky domain to block users blocked too many legitimate users. So we are struggling to manage the risks of bad actor users signing up. **What problems is Kickbox solving and how is that benefiting you?** We use it to stop users signing up to our platform with disposable domains. ### 28. Kickbox review. **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Fine Art | Mid-Market (51-1000 emp.) **Reviewed Date:** August 19, 2025 **What do you like best about Kickbox?** Their adaptability. I have used Kickbox in multiple different roles over the years. When I needed to verify just a few thousand email addresses on a one-time basis, Kickbox made it super easy to sign up and quickly get started. I have also needed their assistance setting up an ongoing integration for higher-volume lead-gen campaigns, and their team was super helpful whenever I needed assistance. **What do you dislike about Kickbox?** This could be totally wrong, but I do have a memory of my team not being notified when we reached out cap of verifications which briefly led to a deliverability issue for us. We very well could have missed an email related to this, but maybe just some more outreach when something like this happens to ensure deliverability isn't harmed. **What problems is Kickbox solving and how is that benefiting you?** We were able to maintain strong deliverability when engaging in high-volume lead-gen campaigns by scrubbing out emails that were bots/no longer in use. It's also helped us scrub email lists for companies we have acquired and have not properly maintained their email marketing lists. ### 29. Great, but very expensive... **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Consulting | Small-Business (50 or fewer emp.) **Reviewed Date:** February 16, 2026 **What do you like best about Kickbox?** I love that the service exists to be able to do this! I had no idea you could even clean lists like this and Kickbox makes it easy **What do you dislike about Kickbox?** It's a bit too expensive, and is a bit out of my price range to be hoenst. I cant get it sustainably. **What problems is Kickbox solving and how is that benefiting you?** Removing possible spam is SOOO helpful and protects our domain ### 30. Has really helped to keep our email list cleaner **Rating:** 5.0/5.0 stars **Reviewed by:** Neal O. | Founder, Internet, Small-Business (50 or fewer emp.) **Reviewed Date:** October 22, 2025 **What do you like best about Kickbox?** There is so much email spam these days. Kickbox helps us automate filtering out a bunch of trash which helps keep our email list cleaner. **What do you dislike about Kickbox?** I wish it was a bit better at identifying throwaway gmail and yahoo emails. **What problems is Kickbox solving and how is that benefiting you?** We have an email list of 100,000 subscribers. We get a lot of potential spam emails joining our list. We use Kickbox to verify every email before we add it to our email list to make sure our deliverability stays strong. ### 31. Improving email reputation **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Information Technology and Services | Mid-Market (51-1000 emp.) **Reviewed Date:** January 20, 2026 **What do you like best about Kickbox?** Using the application and linking it to our marketing automation was very easy. The results are significantly better than with other tools. **What do you dislike about Kickbox?** There is nothing that caught my attention and bothered me. **What problems is Kickbox solving and how is that benefiting you?** Our email data quality was extremely poor due to the collection of addresses from years of business relationships, and our email reputation was very poor due to the sending of emails. In addition, mailings were repeatedly interrupted and addresses were quarantined. ### 32. Kick Box: Great UI and Pricing is good **Rating:** 4.0/5.0 stars **Reviewed by:** Mohammad K. | Director, Small-Business (50 or fewer emp.) **Reviewed Date:** May 08, 2026 **What do you like best about Kickbox?** in kick box application the UI and the Pricing is good **What do you dislike about Kickbox?** nothing everything looks good .................... **What problems is Kickbox solving and how is that benefiting you?** email verification ### 33. Using Kickbox At an Enterprise Level for 15 Accounts since 2021 **Rating:** 4.5/5.0 stars **Reviewed by:** Akash N. | Associate Director, Enterprise (> 1000 emp.) **Reviewed Date:** July 29, 2025 **What do you like best about Kickbox?** Kickbox is my one stop solution for all the brands I take care of. I am using kickbox for 15 different accounts regularly starting 2021 onwards. It is reliable, consistent and worth using to improve the metrics of your email performance. We have also enabled the API integration directly with our websites and the verification happens at the real time. The support team is prompt in answering any query related to implementation. **What do you dislike about Kickbox?** Since I have too many accounts, sometimes it gets confusing to understand the parent account vs. child account vs. the group account. Rest, there's nothing to dislike about the services. **What problems is Kickbox solving and how is that benefiting you?** Kickbox is helping me improve my email bounces, cleaning lists and maintaining the deliverability of my email campaigns. ### 34. Very Helpful **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Music | Small-Business (50 or fewer emp.) **Reviewed Date:** January 05, 2026 **What do you like best about Kickbox?** Kickbox is simple to use, customer support via the chat was fast and helpful, they gave me free credits to try it out, and the payment credit bundles were more flexible than other companies, so it ended up being more cost effective for me. **What do you dislike about Kickbox?** I wish I could buy the exact number of credits based on how many email addresses I’m getting verified. **What problems is Kickbox solving and how is that benefiting you?** It’s helping me cleanup my email list for my small business ### 35. Incredibly Easy to Use **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Construction | Mid-Market (51-1000 emp.) **Reviewed Date:** January 28, 2026 **What do you like best about Kickbox?** Ease of use and affordability are what I like best. **What do you dislike about Kickbox?** The only downside I experienced was the time it took to get my credit card verified. That took longer than I thought it would. **What problems is Kickbox solving and how is that benefiting you?** Kickbox is solving our email verification needs. Our industry is very transient, and email addresses change regularly. Kickbox is helping us limit the number of bounces our email campaigns receive. ### 36. User-Friendly Setup, But Step-by-Step Guides Need More Depth **Rating:** 3.5/5.0 stars **Reviewed by:** Verified User in Computer Software | Small-Business (50 or fewer emp.) **Reviewed Date:** February 04, 2026 **What do you like best about Kickbox?** very user friendly and easy to set up, affordable and good for more lean teams **What do you dislike about Kickbox?** not many step by step guides that cover a variety of situations (had to look at external sources for questions about zapier) **What problems is Kickbox solving and how is that benefiting you?** solving the problem of so many spam submissions on our webforms and we wont have to sort through spam submissions anymore ### 37. Essential for Email Verification Tasks **Rating:** 5.0/5.0 stars **Reviewed by:** Shawn R. | Executive Director **Reviewed Date:** March 13, 2026 **What do you like best about Kickbox?** I use Kickbox to verify email addresses as part of my nonprofit's operations. **What do you dislike about Kickbox?** I haven't encountered anything I don't like about Kickbox. **What problems is Kickbox solving and how is that benefiting you?** I use Kickbox to verify email addresses as part of my nonprofit's communication its resource database. ### 38. Kickbox is an amazing email verification service **Rating:** 4.5/5.0 stars **Reviewed by:** Daniel Z. | Data Engineer, Mid-Market (51-1000 emp.) **Reviewed Date:** January 15, 2025 **What do you like best about Kickbox?** Kickbox's real-time email verification API provides accurate and fast results, helping us maintain a clean email list and improve our deliverability rates. The detailed response data, including their Sendex score and disposable email detection, gives us confidence in the quality of our email database. The API is also easy to integrate and provides clear documentation. **What do you dislike about Kickbox?** The pricing structure could be more flexible for smaller businesses, as the credit-based system might not align well with sporadic email verification needs. Additionally, while the API documentation is clear, it would be helpful to have more detailed example implementations across different programming languages and frameworks. **What problems is Kickbox solving and how is that benefiting you?** Kickbox solves critical email list hygiene problems by preventing invalid, risky, and disposable emails from entering our database. This provides multiple benefits: it reduces email bounce rates, protects our sender reputation, and saves costs by ensuring we only send emails to valid addresses. By catching problematic emails before they enter our marketing funnel, we avoid wasting resources on unreachable contacts and maintain higher deliverability rates for our email campaigns. ### 39. Very Easy to use **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Marketing and Advertising | Mid-Market (51-1000 emp.) **Reviewed Date:** April 24, 2025 **What do you like best about Kickbox?** Kickbox is super straightforward and quick to use. The interface is clean and doesn't require any learning curve. Uploading a list and getting results is fast, which is great when working with tight deadlines. It gives you exactly what you need without overcomplicating anything. **What do you dislike about Kickbox?** The pricing can get a bit high if you're working with large volumes regularly. Also, while it does its core job well, the reporting could be a little more in-depth. Sometimes it would be nice to get a bit more info on why certain emails are marked invalid. **What problems is Kickbox solving and how is that benefiting you?** Kickbox is helping us clean up email lists we've collected over the past 10+ years. A lot of those addresses are outdated or invalid, and using Kickbox has allowed us to quickly identify and remove bad emails. This improves our deliverability and reduces bounce rates, which helps maintain our sender reputation and improves the success of our email campaigns. ### 40. Easy to Implement, Simple, and Predictable pricing **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Marketing and Advertising | Small-Business (50 or fewer emp.) **Reviewed Date:** June 02, 2026 **What do you like best about Kickbox?** Easy to implement, easy to predict the cost and simple product **What do you dislike about Kickbox?** The accuracy is sometime irritating, but kickbox is the best out there right now **What problems is Kickbox solving and how is that benefiting you?** Fast email validation and deliverability of emails ### 41. Kickbox is a "one-stop shop" for your email verification needs **Rating:** 4.0/5.0 stars **Reviewed by:** Jim E. | CTIO, Small-Business (50 or fewer emp.) **Reviewed Date:** January 18, 2024 **What do you like best about Kickbox?** Kickbox has been vital to our needs of ensuring we deliver to only valid inboxes. The ability to simply upload lists and get comprehensive feedback is second-to-none in the field. With a developer friendly API we are easily able to integrate into our software to make it a seamless part of our backend. **What do you dislike about Kickbox?** The only thing I would like to see Kickbox implement would be some type of "real-time" update of email address previously submitted, so we could be alerted when an email is no longer valid. As well, there needs to be a better way of determining if yahoo emails are actually deliverable. Being "valid" doesn't necessarily mean you can deliver to that address. **What problems is Kickbox solving and how is that benefiting you?** Kickbox allows us to verify our lists prior to us sending out marketing materials in order to keep our domain and IP reputation high and ensure deliverability. We also use it for real time verification as email addresses are added to our database. ### 42. We use Kickbox to reduce our bounce rates **Rating:** 5.0/5.0 stars **Reviewed by:** Natalie S. | Acquisition Marketing Manager, Enterprise (> 1000 emp.) **Reviewed Date:** January 16, 2024 **What do you like best about Kickbox?** I like the integration with Hubspot the most. It makes it easy to clean our email list and reduce our bounce rate. I use it every time we have a big blast to all contacts to send out, which is generally whenever we have all-company office closures. I've never needed to use customer support because of the ease of implementation and execution. **What do you dislike about Kickbox?** It would be nice if it automatically excluded emails that previously bounced. Otherwise, we pay for the same credit multiple times. Of course, maybe this isn't Kickbox's fault and we should be excluding previously bounced emails from the list that we verify - I'll get to that! **What problems is Kickbox solving and how is that benefiting you?** We want to reduce our bounce rate so that our sender doesn't get flagged, especially as we send more external emails and expand our email automation. We send a lot of emails, so anything we can do to improve our send rate is good. ### 43. Great Email Validation Tool **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Financial Services | Mid-Market (51-1000 emp.) **Reviewed Date:** February 09, 2026 **What do you like best about Kickbox?** Ease of use. Speed. Simple pricing structure. **What do you dislike about Kickbox?** Not much, it does the job well and we have not experienced any issues. Maybe a tech less solution to a Hubspot integration that does not require custom code. **What problems is Kickbox solving and how is that benefiting you?** We had a lot of junk in our CRM and it helped clear it. ### 44. Easy email verification **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Legal Services | Mid-Market (51-1000 emp.) **Reviewed Date:** July 16, 2025 **What do you like best about Kickbox?** It's super easy to use – you just upload your list, and it tells you which emails are good, which you should be careful, and which ones are totally dead. They even give you this 'Sendex Score' so you know how likely an email is to actually land in an inbox. It's great because I'm not wasting money sending emails that will never get seen, and my sender reputation is not being compromised now. **What do you dislike about Kickbox?** Sometimes, the 'risky' category can be a bit vague. They'll flag an email as 'risky,' which is helpful, but I've sometimes wished for a little more detail on why it's risky. Is it a disposable email? A catch-all? Knowing more would help me decide if I want to try to keep it or just ignore it. Credit expiration can be a pain for larger organizations. For a company like ours, buying credits often involves opening a purchase request, getting approvals, etc., which takes time. It's usually easier to just buy a larger batch of credits than you think you'll need so you only have to go through that process once a year. But with their credit expiration policy (usually after a year), if you over-purchase and don't use them all, you end up losing money. It forces you to be very precise with your forecasting, or risk losing credits **What problems is Kickbox solving and how is that benefiting you?** Helping improve deliverabilty on email marketing and preventing our domain / ip reputation from going worst. ### 45. Quick Setup and Simple, Easy-to-Navigate UI **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Consulting | Small-Business (50 or fewer emp.) **Reviewed Date:** February 10, 2026 **What do you like best about Kickbox?** Very quick to install and the UI is simple to navigate. **What do you dislike about Kickbox?** Advice around what to do with each category after they have been classified would be great, e.g. an additional service to help with 'risky' contacts. **What problems is Kickbox solving and how is that benefiting you?** It gives us greater confidence when assessing the performance of campaigns. ### 46. Simple and Effective, But Navigation Needs Improvement **Rating:** 4.5/5.0 stars **Reviewed by:** Valerijs K. | CRM Manager, Mid-Market (51-1000 emp.) **Reviewed Date:** October 22, 2025 **What do you like best about Kickbox?** Kickbox is very simple and straightforward platform. However, I can get the granularity I need when I download the contacts. **What do you dislike about Kickbox?** Some navigation is not very intuitive, and the statistics of previous verifications are getting erased after a certain period of time. **What problems is Kickbox solving and how is that benefiting you?** I used it to verify the emails of our customer base. I compared it to other competitors, and Kickbox is the most accurate. ### 47. Kickbox is easy to use! **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Publishing | Mid-Market (51-1000 emp.) **Reviewed Date:** February 09, 2026 **What do you like best about Kickbox?** very easy to use - plus I like the marketers option **What do you dislike about Kickbox?** sometimes it takes a long time to download the results, but that may be on my end **What problems is Kickbox solving and how is that benefiting you?** it helps me understand what emails are bogus or unsafe before I upload them into Sailthru and send out ### 48. Kickbox is easy to use, cheap, and effective. If my dumbass can figure it out, you can to! **Rating:** 5.0/5.0 stars **Reviewed by:** George B. | Loan Representative, Small-Business (50 or fewer emp.) **Reviewed Date:** June 05, 2025 **What do you like best about Kickbox?** User interface was very intuitive. It was incredibly easy to upload my lists and get them broken down into usable parts. This probably saved me hundreds of hours verifying contacts. **What do you dislike about Kickbox?** My only issue was that Kickbox had trouble reading one of my lists, but that was due to an error on my list - not Kickbox. **What problems is Kickbox solving and how is that benefiting you?** I stepped into a marketing role and we had lists of over a hundred thousand contacts. These lists were developed over 40+ years and unfortunately many of the contacts were simply old and no longer valid. We continued to advertise to them, but because the lists were so faulty our advertisements were being sent to spam. By using Kickbox to purge our lists, we have found our digital advertisements are actually getting through to our customers. ### 49. Clunky Integration with HubSpot, Needs Improvement **Rating:** 2.5/5.0 stars **Reviewed by:** Katie M. | CEO **Reviewed Date:** February 05, 2026 **What do you like best about Kickbox?** I like the HubSpot integration with Kickbox. **What do you dislike about Kickbox?** The experience with the application once connected to HubSpot was clunky. And my biggest complaint is that when I went to purchase, it had to go under review for twenty-four hours, which I thought was strange. **What problems is Kickbox solving and how is that benefiting you?** Kickbox cleans out old emails. ### 50. Flexible and Effective Email Verification **Rating:** 5.0/5.0 stars **Reviewed by:** Tzvi L. **Reviewed Date:** January 26, 2026 **What do you like best about Kickbox?** I like Kickbox's flexibility a lot, and I also find the email verification tool quite valuable. The initial setup was overly easy for me, which was great. **What do you dislike about Kickbox?** I think a campaign feature should be added. **What problems is Kickbox solving and how is that benefiting you?** I use Kickbox for testing emails before sending with its email verification tool, which is flexible. ## Kickbox Discussions - [What does Kickbox do?](https://www.g2.com/discussions/what-does-kickbox-do) - [Is never bounce free?](https://www.g2.com/discussions/is-never-bounce-free) - [What is kickbox verification?](https://www.g2.com/discussions/what-is-kickbox-verification) - [What is Kickbox API?](https://www.g2.com/discussions/what-is-kickbox-api) - [View Kickbox pricing details and edition comparison](https://www.g2.com/products/kickbox/reviews?page=3&qs=pros-and-cons§ion=pricing&secure%5Bexpires_at%5D=2026-07-15+20%3A51%3A08+-0500&secure%5Bsession_id%5D=499f1c84-85d1-4f76-b5a9-aa5f0b78a874&secure%5Btoken%5D=2cad3a5445fa9d67115813c7afbb49c87dd7a986828fbfb3f1cf05678ed15135&format=llm_user) ## Kickbox Integrations - [ActiveCampaign](https://www.g2.com/products/activecampaign/reviews) - [Auth0](https://www.g2.com/products/auth0/reviews) - [AWeber](https://www.g2.com/products/aweber/reviews) - [Benchmark Email](https://www.g2.com/products/benchmark-email/reviews) - [Braze](https://www.g2.com/products/braze/reviews) - [Campaign Monitor](https://www.g2.com/products/campaign-monitor/reviews) - [Campaign Monitor Commerce](https://www.g2.com/products/campaign-monitor-commerce/reviews) - [Cognism](https://www.g2.com/products/cognism/reviews) - [Constant Contact](https://www.g2.com/products/constant-contact/reviews) - [Cordial](https://www.g2.com/products/cordial/reviews) - [Digioh](https://www.g2.com/products/digioh-digioh/reviews) - [Dotdigital](https://www.g2.com/products/dotdigital/reviews) - [Drip](https://www.g2.com/products/drip/reviews) - [Dynamics 365 Sales](https://www.g2.com/products/dynamics-365-sales/reviews) - [GetResponse](https://www.g2.com/products/getresponse/reviews) - [HubSpot Data Hub](https://www.g2.com/products/hubspot-data-hub/reviews) - [HubSpot Marketing Hub](https://www.g2.com/products/hubspot-marketing-hub/reviews) - [HubSpot Sales Hub](https://www.g2.com/products/hubspot-sales-hub/reviews) - [iContact](https://www.g2.com/products/icontact/reviews) - [Iterable](https://www.g2.com/products/iterable/reviews) - [Klaviyo](https://www.g2.com/products/klaviyo/reviews) - [MailerLite](https://www.g2.com/products/mailerlite/reviews) - [Sailthru by Marigold](https://www.g2.com/products/sailthru-by-marigold/reviews) - [Sendloop](https://www.g2.com/products/sendloop/reviews) - [Symfony](https://www.g2.com/products/symfony/reviews) - [VASPP BREVO](https://www.g2.com/products/vaspp-brevo/reviews) - [Yotpo](https://www.g2.com/products/yotpo/reviews) - [Zapier](https://www.g2.com/products/zapier/reviews) ## Kickbox Features **Agentic AI - Email Verification** - Decision Making ## Top Kickbox Alternatives - [ZeroBounce](https://www.g2.com/products/zerobounce/reviews) - 4.7/5.0 (1,354 reviews) - [BriteVerify](https://www.g2.com/products/briteverify/reviews) - 4.2/5.0 (73 reviews) - [Emailable](https://www.g2.com/products/emailable/reviews) - 4.8/5.0 (262 reviews)