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Inboxkit Review: 7 Things You Should Know Before You Buy
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5 min read
I used Inboxkit to understand how much work it actually removes from cold email setup, things like DNS, mailboxes, and warmup.
At first, it looks simple and ready to use.
But when I tested and went step by step, a few things became clear.
I noticed how the setup works, what is included, what comes as an add-on, and how it changes when you start adding more mailboxes.
These small details can affect how you actually use it.
If you’re considering Inboxkit, here are 7 things you should know before you decide.
Inboxkit Review - Key Takeaways
Inboxkit gives you structured cold email infrastructure with Google, Microsoft 365, and Azure mailboxes, plus automatic DNS setup and a central dashboard.
But important parts like warmup, monitoring, and scaling still need to be managed separately as you grow.
If you want a more ready-to-use setup with distributed email infrastructure, simpler scaling, and more predictable mailbox management, Mailforge is the better fit.
Inboxkit vs Mailforge: Quick Comparison
What is Inboxkit?
Inboxkit is a platform that gives you ready-to-use cold email infrastructure in one place, with Google, Microsoft 365, and Azure mailboxes included.
It also sets up things like SPF, DKIM, and DMARC for you, so you don’t have to do it manually.
You can manage your mailboxes, check performance, and monitor everything from one dashboard.
Instead of setting up mailboxes, DNS, and tracking separately, everything is handled in one place, so you can manage your email setup more easily.
How Inboxkit Setup and Usage Works
Here’s how the setup works:
- Connect your domain in the dashboard.
- Create mailboxes using Google, Microsoft 365, or Azure.
- Inboxkit sets up DNS records like SPF, DKIM, and DMARC automatically.
- Wait for the domain to show as connected and ready.
- Manage all mailboxes from one dashboard and track replies, bounces, and performance.
You can also create multiple mailboxes at once and manage everything in the same place.
When I went through this myself, the setup felt simple and easy to follow.
But I also noticed that some parts, like warmup and monitoring, are added separately, so you need to enable them and pay per mailbox, especially when you start adding more mailboxes.
Inboxkit Pricing
Inboxkit pricing mainly depends on how many mailboxes you use.
- Professional – $31/month
Includes 10 mailboxes. If you need more, each extra mailbox costs around $3.1 per mailbox. - Agency – $81/month
Includes 30 mailboxes. Extra mailboxes cost around $2.7 per mailbox. - Enterprise – $250/month
Includes 100 mailboxes. Additional mailboxes cost around $2.5 per mailbox.
Warmup is $3 per mailbox/month, and InfraGuard is an add-on (first month free).
7 Things You Should Know Before Buying Inboxkit
When I used Inboxkit, I noticed a few things that are not obvious at first but matter when you actually start using it.
1. What Do You Get by Default (and What’s Extra)?
- Inboxkit gives you mailboxes (Google, Microsoft 365, Azure), automatic DNS setup, and a dashboard to manage and track everything.
- But important deliverability features like email warmup and InfraGuard (monitoring, blacklist checks, placement tests) are not included by default.
You need to enable them separately, and warm-up is per mailbox.
So the base setup is ready, but key deliverability parts depend on what you add.
2. How Much of Your Setup Is Actually Automated?
- Inboxkit sets up mailboxes and DNS automatically, but your setup can still include multiple parts.
- Features like warmup and InfraGuard are not automatic. You need to enable them separately based on your setup.
So before sending, your setup is not just one step; it includes a few parts that you complete inside the platform.
3. How Fast Can You Start Sending Emails?
- Setup is quick. You can create mailboxes and get them ready in minutes.
- But you can’t start sending at scale right away. You still need to warm up your mailboxes first for 14 days.
Warmup is available, but it needs to be enabled per mailbox, and it gradually increases sending volume.
4. How Well Can You Scale with Inboxkit?
- Inboxkit scaling is based on mailbox count.
- Plans include 10, 30, and 100 mailboxes. Once you use these, you can add more, but each additional mailbox is charged separately.
So scaling is not just about increasing volume.
It means adding more mailboxes one by one.
As you grow, cost and features like warmup also increase per mailbox.
5. How Much Visibility Do You Actually Get Into Email Performance?
- Inboxkit gives you a dashboard with detailed metrics.
- You can track reply rates, bounce rates, soft vs hard bounces, and email-level insights.
- It also provides weekly reports and real-time monitoring.
So you can see how each mailbox is performing in one place.
6. How Does Inboxkit Handle Domain Safety?
- Inboxkit checks domain health before use.
- Domains are pre-screened for blacklist status and past abuse. It also verifies DNS setup and keeps track of reputation.
- Each domain is managed in a separate panel, so if one domain has an issue, it does not affect others.
This helps you manage multiple domains without overlap.
If you need more control, Infrastructure tools like Infraforge offer dedicated IPs and real-time alerts for better visibility over domain and IP safety.
7. Where Do You Run Your Setup Checks?
- Inboxkit also provides a set of free tools for checking different parts of your email setup.
- These include tools for SPF, DKIM, and DMARC checks, DNS validation, blacklist checks, deliverability scoring, and more.
These tools are available to use alongside the platform, so you can run checks and validate your setup when needed.
Inboxkit Pros and Cons
After using it, these are the things I found useful and the things you should be aware of before deciding.
Pros
- Handles email infrastructure in one place, including mailboxes, DNS setup (SPF, DKIM, DMARC), and a central dashboard
- Setup is quick, you can connect a domain and create mailboxes in minutes
- Supports Google, Microsoft 365, and Azure mailboxes
- Let's you create and manage multiple mailboxes from one dashboard
- Keeps domains isolated, so issues in one do not affect others, and provides alerts.
Cons
- Warmup and InfraGuard are not included by default and need to be enabled separately
- You can’t start sending at scale immediately; mailboxes need to be warmed up (typically around 14 days)
- Costs increase as you add mailboxes and enable features per mailbox
- Plans come with fixed mailbox slots (10, 30, 100), so scaling depends on plan limits and add-ons
- Deliverability setup is split across features (warmup, monitoring, tests), not handled in one flow
- Free tools are separate utilities, not part of the core workflow
After using Inboxkit, one thing becomes clear: setup is structured, but you still need to manage parts like warmup, mailbox count, and add-ons as you go.
If you want a setup where these are handled more directly without managing each part separately, Mailforge is worth considering.
Mailforge: A Simpler Alternative to Inboxkit for Scaling Outbound
Mailforge is a ready-to-use cold email infrastructure platform that uses shared IP, distributed infrastructure and lets you manage unlimited domains and mailboxes for outbound.
One important difference is the mailbox model itself.
Inboxkit relies on reseller-style Google, Microsoft 365, and Azure mailboxes.
That can feel familiar if you want to use standard mailbox providers and keep your setup close to that model.
Mailforge takes a different route.
It uses a distributed email infrastructure built specifically for cold outreach, which makes it a better fit for teams that care more about scaling flexibility and outbound-focused infrastructure.
It is built specifically for cold outreach, where you can create domains and mailboxes and have SPF, DKIM, and DMARC set up automatically.
Setup is guided and takes only a few minutes.
Once your domains are added, Mailforge handles configuration, hosting, and ongoing maintenance of your inboxes.
It uses a mailbox slot system, where you are charged based on slots, not active mailboxes.
This lets you create, delete, or replace mailboxes within those slots without extra cost.
You also get features like bulk DNS updates, domain transfers, multiple workspaces, and SSL with domain masking for added security.
It works with any sending software, so you can connect it to your existing outreach setup.
Pricing starts around $3 per mailbox per month, which keeps it more affordable as you scale since you’re not paying for every active mailbox in the same way.
Conclusion
After using Inboxkit, it’s clear how the setup works.
You get control over mailboxes, DNS, and monitoring, but you also need to manage things like warmup, mailbox count, and add-ons as you scale.
So the real decision comes down to what kind of mailbox setup you want.
If you prefer reseller-style Google, Microsoft 365, or Azure mailboxes and you are okay with managing warmup, monitoring, and mailbox growth step by step, Inboxkit works well.
But if you want something that feels more ready to use, easier to scale, and built around a distributed email infrastructure instead of reseller-style mailboxes, Mailforge is the better option.
It handles DNS setup, inbox hosting, and maintenance, so your setup is ready in minutes.
It also gives you more flexibility when managing large numbers of domains and mailboxes for outbound.
Start with Mailforge at just $2–$3 per mailbox per month and scale your outbound with unlimited domains and mailboxes.