It’s quick and easy to run through a large number of emails and get results almost instantly. And when an email can’t be confirmed either way, it doesn’t cost a token, so it doesn’t feel like anything is being wasted. Review collected by and hosted on G2.com.

So far, it’s been of limited use for us, but it’s worked fine for what we’ve needed. Review collected by and hosted on G2.com.

Kickbox offers a comprehensive solution for email list validation, ensuring accuracy and efficiency in managing your contacts. Review collected by and hosted on G2.com.

Kickbox provides a simple interface and a clear process for validating email lists. Once I had my list ready in Google Sheets, it was easy to upload the list. The whole process was very fast—just a few minutes for roughly 7000 addresses. Not a necessity for it to connect at this point, but it does output a nice CSV that I can use to delete invalid contacts before uploading to Klaviyo Review collected by and hosted on G2.com.

The interface is clear, the flow is easy and it seems to work! The output took me a second to figure out, but I like the email scoring so I know ahead of time an expected bounce rate. Review collected by and hosted on G2.com.

Ran into an issue with opt-in and my account was shut down. I thought that was a bit abrupt and it disrupted our process. If they had asked beforehand for the docs and verification info I would have provided it. Review collected by and hosted on G2.com.

I mainly use Kickbox to clean and validate email databases by uploading lists directly to the platform. The interface is simple and intuitive, so the process requires little to no onboarding or support.

Performance is fast, and the results are clearly categorized, making it easy to identify invalid or risky emails. I have not used any integrations, but the manual upload process works well for my needs.

The pricing is competitive, and the tool provides good value by helping improve data quality, reduce bounce rates, and protect email deliverability. Review collected by and hosted on G2.com.

As of now, I don’t have any complaints. It’s been a very reliable product for me. Review collected by and hosted on G2.com.

I like the accuracy of its reporting on good versus not so good email addresses. Review collected by and hosted on G2.com.

3 days ago I bought credits to check more email addresses. The system put a hold on my account while this is checked. It was only a $5 credit and I've been waiting 3 days. that's not really good enough. Review collected by and hosted on G2.com.

This software is very user-friendly, and its features are easy to understand, even the first time I use it. and the integration of it api was a piece of cake and the details they provide for every email is much use full. i have been using this from past 6 months and haven't faced any problems to contact customer support. the alert mails they send helps a lot to keep the balance updated. overall the implementation of the kickbox api is very easy and reliable. Review collected by and hosted on G2.com.

Currently, I don’t see any downsides to the Kickbox API. If I run into any issues in the future, I’ll reach out to customer support. Review collected by and hosted on G2.com.

I used Kickbox to verify emails for my newsletter with over 2600 subscribers. I like that it was quick and simple. I just exported the file from my ESP, imported it into Kickbox, and filtered out my list. I downloaded the risky or bad emails, re-imported them with a tag into my ESP, and unsubscribed them all. There wasn't much setup needed, just signed up, uploaded the list, and it worked efficiently. Kickbox really helped me filter out the list to avoid deliverability issues. Review collected by and hosted on G2.com.

When I first purchased my credits, the account was flagged for manual review, on a weekend, so I had to wait until Monday morning to use it. Review collected by and hosted on G2.com.

It’s very straightforward to use, and I like the tiered payment bands. Review collected by and hosted on G2.com.

My transaction was delayed because the system flagged it for manual review. Review collected by and hosted on G2.com.

I particularly liked the ability to easily rescan the unknowns as it made a big difference to the end results Review collected by and hosted on G2.com.

I really didn't experience any issues; it was all easy to use. Review collected by and hosted on G2.com.

The two-way integration with HubSpot was easy to set up and works really intuitively. Verifications run smoothly and quickly, so we're not left waiting around when cleaning up a list. I also appreciate that Kickbox gives you different options for how strict you want the email verification to be, so you can match the level of scrutiny to the use case (whether that's a tight cleanup of a sales list or a lighter check on a newsletter signup). On top of that, the pricing is transparent and predictable, with no hidden fees or surprises, which makes it easy to plan and justify internally. Review collected by and hosted on G2.com.

Honestly, nothing really comes to mind. It does exactly what it needs to do, and it does it well. The interface is intuitive and the tool stays focused on its core job of email verification, without piling on extra features that would only distract from the workflow. If anything, that minimalism is a strength rather than a downside. Review collected by and hosted on G2.com.