I really like the simplicity of the UI and the responsiveness of their customer support. Inboxkit also provides API access, which allows me to automate my workflow efficiently. By connecting the API key to Claude Code, I can add domains from providers like Porkbun or Spaceship, then set up inboxes and integrate directly into my sending software like Smart Lead. This automation significantly reduces the setup time from what used to be twelve hours over three days to just a few lines of code. Additionally, purchasing inboxes through Inboxkit is more cost-effective compared to buying directly from Google or Microsoft. Review collected by and hosted on G2.com.

Nothing really. Review collected by and hosted on G2.com.

The product concept is useful when it works: centralized mailbox infrastructure, mailbox scaling, and managing cold email mailboxes without manually handling every workspace/admin task. The appeal for us was being able to scale infrastructure faster and avoid doing every domain and mailbox step by hand. Review collected by and hosted on G2.com.

The biggest issue was reliability and accountability. We paid a $500 wallet top-up on April 23, 2026 for 200 additional mailboxes at $2.50 per mailbox. After waiting through the warm-up period, InboxKit's own app showed "200 Mailboxes Failed Renewal" across 60 domains with a "Recovery cost: $500.00 credits."

When we raised it, their team later acknowledged in writing that it was a failure on their end in both the renewal flow and support handling. Another email explained that some mailboxes were on a credit system, credits ran low, renewal did not go through, and no one flagged it in time.

Instead of resolving the refund request for the $500, they offered restoration, preferred pricing, a free month, and Slack/WhatsApp access. We had already lost trust in the platform because this broke our mailbox infrastructure, wasted about a month of warm-up time, and forced us to move to another vendor. After our formal refund request and chargeback notice, the thread was not resolved. Review collected by and hosted on G2.com.

I use Inboxkit to set up inboxes for my outbound marketing agency. It handles a lot of things that would otherwise take me too much time to set up myself, like getting DNS records set up properly and connecting inboxes to my sequencer or sending tool. Their support helps fix problems as soon as possible if they arise. Recently I had DNS issues that caused problems in my sequencer, and Inboxkit quickly got to work, found the DNS issues, and resolved them. I really appreciate when companies like Inboxkit prioritize support. My business doesn't run without healthy inboxes, proper settings, and fixing issues quickly, so I need an inbox provider that can help me scale, and that starts with caring about providing excellent service and support. The initial setup was very easy to figure out and I had no issues. I came to Inboxkit because other agency owners who use it recommended it, and I would rate it a 10 out of 10 to recommend to a friend or colleague. Review collected by and hosted on G2.com.

{"There was nothing in my InboxKit dashboard that showed anything wrong when I had my recent DNS issue.","I want InboxKit to flag issues as soon as possible. It may not have been something that InboxKit was aware of, but being able to flag issues as soon as possible is really important.","I don't want problems to only get found or fixed when I find them. I would rather know there is a problem immediately and work with the company to fix it.","I typically don't sign into InboxKit unless I'm setting up more inboxes or if I already suspect there is a problem, so I need proactive alerts.","I want a visible status dashboard, automated daily health checks/daily health overview, and maybe a weekly report by email that goes a little deeper."} Review collected by and hosted on G2.com.

Inboxkit has significantly improved our inbox placement and overall deliverability rates, helped by its warmup features and domain reputation tools. As a Google Cloud Partner, it provides reliable inboxes, an easy setup process, and a clean, intuitive dashboard. The support team is fast, technically knowledgeable, and uniquely proactive in suggesting how to fix inbox issues before they become real problems. Review collected by and hosted on G2.com.

Nothing majo, minor UI improvements, the platform could do with some more colour and the analytics suite could be improved. Review collected by and hosted on G2.com.

The UI is super clean, and the overall experience has been really good. So far, we haven’t found anything in the product that causes confusion or makes it difficult to keep using. Customer support is also clear, direct, and fast. Review collected by and hosted on G2.com.

The credit feature is okay, but I think there’s still room for improvement—especially in how the monthly mailbox subscription or payment process works. Review collected by and hosted on G2.com.

I like how good the customer service is at Inboxkit. The people I work with are great at responding quickly and fixing things. I also appreciate the quick setup for mailboxes and the MCP because it's very easy to use their system. It's also super easy to set up, and I can't forget the great price. Review collected by and hosted on G2.com.

Not really anything at the moment, it works great and we're happy. Review collected by and hosted on G2.com.

Very easy to use.

Compared to others tools Domain registration and email configuration is done very quickly.

Good customer support, the AI agent answers most of the questions accurately. Feels like connecting with an agent is not necessary.

I use it almost every, the email insights are very helpful in maintaining email health.

Super easy to integrate with other apps, for me as soon as the email gets created, it will be automatically linked to my Smartlead.ai account.

Also, for the same emails, I used to pay 4.5$/month, here it's cheap and when I took subscription it became more cheaper. Review collected by and hosted on G2.com.

They used to have email verification feature until few days ago, but they have removed it now. I hope they will add it soon, it helped us alot and we are planning to use it more. Review collected by and hosted on G2.com.

The UI is very user-friendly, and the support I get from their team when a rare issue comes up is top-notch. In my eyes, they offer the best pricing for dependable, legitimate Microsoft or Google email accounts. Review collected by and hosted on G2.com.

i dont really have anything negitive to say about it Review collected by and hosted on G2.com.

The auto-reconnect feature in the dashboard is great. Review collected by and hosted on G2.com.

There were a few occasions when the dashboard felt a little laggy, though it wasn’t a frequent issue. Review collected by and hosted on G2.com.

I like the support that Inboxkit offers, which is really helpful. I also appreciate how easy to use the platform is, and how well the team works with it. Review collected by and hosted on G2.com.

I think the pricing of Inboxkit could be improved. Review collected by and hosted on G2.com.