4.6
Taco ratings
INBOX is praised for its user-friendly interface, drag-and-drop templates, and real-time analytics. Customers also appreciate its affordability, multiple brand management, and ease of setup. Some users have noted minor drawbacks like limited automation and form design options. With an overall rating of 4.6 and a 60-day money-back guarantee, INBOX is a solid buy for those in need of an efficient email marketing solution.
AI-powered summary of customer reviews
Verified purchaser
Overall terrifying experience.
I just purchased the InBox. It seems like quite good. It has a very good reputation and a lot of reviews on appsumo. Now I just redeemed my Tier 1 and I also logged in. Now when I'm trying to log out, it's pushing me to download something. I don't know why they are doing this. It's kind of some bug, or they are trying to install a virus or something like this on our laptop?. I'm using MacBook Safari. Overall, the experience is terrifying. I'm not sure what they are trying to do.
Emin_Inbox
Jun 10, 2026Hi, and thank you for picking up INBOX — we're genuinely sorry the experience felt unsettling, because that's the last thing we want for a new user.
We want to reassure you right away: INBOX never triggers any download to your device. There's nothing to install — it runs entirely in the browser, and we have 25,000+ active users with no reports of a download being pushed on logout. We've also...
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Verified purchaser
This is a great piece of software and I highly recommend it
I bought Inbox on AppSumo in 2021 which is quite a while ago, and honestly, it’s one of the few tools that’s genuinely kept improving over time rather than disappearing into the usual startup graveyard.
The team have clearly continued developing it properly, and it now feels like a solid, reliable piece of software rather than an unfinished “coming soon” product.
What I like most is that it’s become more polished, more capable, and more useful the longer I’ve had it.
I’m actually surprised it’s still available on AppSumo. If the lifetime deal is still there and you think you’d use it, I’d seriously grab it while you can.
Definitely one of the better AppSumo purchases I’ve made.
Emin_Inbox
May 13, 2026This honestly means a lot 🙏
One of our biggest goals since 2021 has been to keep improving INBOX instead of becoming another abandoned startup product, so reading this made the whole team really happy.
Thank you for noticing the progress and for supporting us for so long. We’re still building every day ❤️
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Verified purchaser
The Ultimate Tool for SaaS Growth
Building a Healthcare ERP in a growing market like Indonesia, Klinikita Indonesia, means we need to move fast. UseInbox gives us the infrastructure to scale our outreach without the skyrocketing costs of other platforms. The A/B testing feature allowed us to refine our messaging for medical practitioners, significantly increasing our conversion from free trial to paid subscribers. This is a high-value investment for any digital product owner.
Emin_Inbox
May 13, 2026Love hearing this 🙏
Building in healthcare is not easy, so it’s amazing to hear INBOX has been helping Klinikita scale outreach more efficiently and improve conversions with A/B testing.
Thank you for trusting us to be part of your growth journey — comments like this motivate our whole team ❤️
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Verified purchaser
One of my best purchases!
I bought Inbox a few years back and have not regreted it. It is one of the best email marketing tools that I have used and I highly recommend it. The best part of buying here on Appsumo is that I no longer have to pay a monthly fee for my email marketing.
Emin_Inbox
May 13, 2026This made me smile 🙏
Really happy to hear INBOX has been one of your best AppSumo purchases and continues to help with your email marketing without the monthly costs.
Thank you for the support and recommendation — we truly appreciate it ❤️
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Verified purchaser
UseInbox: A Powerful and User-Friendly Email Marketing Tool
5-Star Review for UseInbox
I have been using UseInbox for a while now, and I am extremely happy with the results. This tool offers everything I need for effective email marketing, all in one place.
The flexible campaign design helps me create personalized and engaging emails easily. One of my favorite features is the automatic resend to contacts who didn’t open the first email — it has really improved my open rates. The advanced segmentation options let me target different customer groups precisely, which makes my campaigns much more effective.
Managing multiple brands from one account is a huge time-saver and cost-efficient, as I don’t need separate tools for each brand. The customer support team is friendly, responsive, and always ready to assist whenever I have questions.
Overall, UseInbox is a powerful, reliable, and easy-to-use platform that I highly recommend for anyone looking to improve their email marketing efforts.
Emin_Inbox
May 13, 2026Thank you so much for taking the time to share such a detailed review.
We’re really glad to hear that UseInbox is helping you improve your email marketing results and that features like campaign design flexibility, smart resends, and segmentation are making a real impact on your open rates and targeting.
It’s also great to know that managing multiple brands from a single account is saving you...
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