Kickbox has a simple, easily understood UI that lets you get working quickly and easily. Review collected by and hosted on G2.com.

Even in a relatively small list being checked as a test, both false positives and false negatives were present. Review collected by and hosted on G2.com.

I like the flexibility of the plan and the credit system with Kickbox. You're not locked into a plan that costs more than you need. I appreciate that you pay for validation with credits, and as you scale, the price goes up, but you're getting good value for your money. I also love the simplicity it offers, where each email validation is worth one credit. It allows me to buy the number of credits I need and scale it appropriately to the size of my business without having to pay penalties for a particularly busy month. Additionally, the initial setup was extremely easy and took me less than thirty minutes. I find the user experience to be pretty good, and the API integration with custom systems is really nice. Review collected by and hosted on G2.com.

I think Kickbox could do maybe a little bit better job explaining the difference between the risky segment and the undeliverable one. Initially, it wasn't clear to me whether those people should be excluded or not. Review collected by and hosted on G2.com.

Kickbox's email checks really surprised me in their depth and efficiency. Review collected by and hosted on G2.com.

I haven't come across any issues at all yet. Review collected by and hosted on G2.com.

I like the ease of use and the ability to download the list later. I just think the platform is super easy to use, super clear, and the output is incredibly helpful. The validation feature is valuable because it keeps my email list clean and ensures that our emails get delivered. The initial setup of Kickbox was super easy. Review collected by and hosted on G2.com.

nothing Review collected by and hosted on G2.com.

Kickbox allows us to be confident in our data, it seamlessly intergrates with HubSpot, giving us a high level of performance, knowing any comms we are sending are going to highly engaged, real contacts - the price impact is so small for the impact it has on the business Review collected by and hosted on G2.com.

The interface could be slightly improved to feel more modern - with more breakdown/reporting details Review collected by and hosted on G2.com.

I find Kickbox pretty easy to use. It doesn't have any unnecessary fluff, which I appreciate because I don't have time to deal with complicated websites. The API is good, making the entire process straightforward. The initial setup was also easy, which was a relief. Review collected by and hosted on G2.com.

Maybe a pre-analysis or something like that to stop me wasting all my credits. It says this is a high risk one or a low risk one or something like that. Review collected by and hosted on G2.com.

Easy to use and efficient. I completed my project in minutes. Review collected by and hosted on G2.com.

I didn't really have any negative experiences or issues. Review collected by and hosted on G2.com.

Being able to check if a user is using a real email address that is deliverable and also its great for us to identify if somebody is trying to register on our site using a throw away email address. It is also VERY simple to set up. We also find it good value for money. Review collected by and hosted on G2.com.

nothing we find the service perfect for our needs and response times on the API are already good. Review collected by and hosted on G2.com.

VERY easy to use, and easy API to work with. The Sendex Score is a great feature to keep you apprised of your sending risks...overall great solution. Review collected by and hosted on G2.com.

Can get pricey...but still sits in the middle range amongst competitors. Review collected by and hosted on G2.com.

I like that it's simple, straightforward, and effective. When I need to verify an email list, Kickbox helps me do so easily and quickly. Additionally, Kickbox provides a report for every email list that I verify, which is very useful both for me and for communicating results to clients. They make email verification basically frictionless, and since Kickbox offers easy-to-read/understand reports, it's easier to communicate results and show value to my clients. Another thing I really like is their variety of knowledgebase articles that are easy to find and explain email verification in very simple terms. This helps answer my questions and makes it easy to answer my clients' questions. I also used Kickbox's integration with HubSpot, which streamlined the process of verifying lists directly from HubSpot in Kickbox and then quickly getting the verified lists added back to HubSpot. The initial setup was very easy. All I needed to do was create an account, add a payment method, and then I was ready to use Kickbox. Review collected by and hosted on G2.com.

For the most part, I haven't had any problems with Kickbox. However, one small nitpick I have is how 'Unknowns' are handled. When you verify an email list, it's possible that Kickbox will be unable to get a valid response from some recipients' mail servers. When this happens, they mark the email as 'Unknown' because they weren't able to verify it. While it's nice that Kickbox will let you re-verify these 'Unknown' email addresses for free, re-verifying these email addresses creates a second, separate report. For a recent verification job, I was initially faced with ~1,300 'Unknowns,' which was a good chunk of my list. So, I had to re-verify these ~1,300 emails several times in order to verify most of them, which led to me having 7 different reports/results for one list. Instead of being able to download all of the results together, I had to download files separately and combine them manually. Perhaps there is a good reason why Kickbox handles re-verifying 'Unknowns' this way, but I find it to add a bit of friction to my job. Review collected by and hosted on G2.com.