Warmup Inbox Review: Is This Tool Worth The Money?

Let me guess – you landed on Warmup Inbox’s website and were surprised by the number of features it offers.

Yep, same.

From language and topic-specific warmups to ESP-specific setups and other deliverability features, it does seem pretty loaded.

But what really grabs your attention?
The $15/mo/inbox price tag.

Now you’re asking the real question:
Is it even worth paying for all these extra features?

Well, I’ve been there—and I’ve done the research for you.

In this blog, I’m sharing my honest, in-depth review of Warmup Inbox so you can decide for yourself whether it’s worth the money.

Plus, I’ll share an alternative I genuinely believe excels at the core job of warming up the email accounts and at a much more affordable price.

Let’s get into it.

TL;DR: Is Warmup Inbox Worth the Hype?

If you’re in a hurry, here’s everything you need to know about Warmup Inbox:

Does Warmup Inbox Really Work?

Yes, in most cases.
But when it doesn’t, it can backfire—badly. I came across 2-3 user reviews where their domain got blocked by Outlook and Google within just a week of using it!

So, Is Warmup Inbox Worth the Cost?

Honestly, no. Even when it works, I don’t think it’s worth paying $15/month to warm up just one email account.

Is There a Better Alternative?

Yes—TrulyInbox.
Because it can warm up unlimited email accounts and gets the job done without putting your domain at risk.

Here are some other cool things about TrulyInbox →

• Up to 97% email deliverability
• Works with all major ESPs
• Fully customizable warm-up settings

What are the Top Features of Warmup Inbox?

To do a proper review of Warmup Inbox, I signed up for their Pro Plan ($49/month/inbox), bought a fresh email account, and put it on warm up for a few weeks.

Here’s my honest take on each of its core features — what worked and what didn’t. 

1. Email Warm Up
2. Email Reputation Check
3. Human-Like AI-Generated Email Copies
4. Language-Specific Warmup
5. Technical Setup Check
6. Scheduled Email Warmup

Let’s get into the details! 

1. Email Warm Up

Setting up Warmup Inbox was pretty simple — I connected my email account and jumped straight into testing the warmup feature.

On the surface, it looks like a solid setup. They claim to use a network of over 30,000 real email accounts to send and receive warmup emails, which is supposed to help improve your email reputation and keep you out of the spam folder.

If you’re on their Pro plan ($49/month per inbox) like I was, you also get some “advanced” features— like specific ESP warm-up, scheduling when your emails go out, language-specific warm-ups, and some other extras.

Sounds cool, right?
But here’s what I actually experienced…

Most of their warmup network is made up of Google Workspace (Gmail) accounts.

So when I tested it with an Outlook email, the warmup emails started slowing down — sometimes barely any would go out. I even saw a couple of other users online complaining about the same thing.

They also have stuff like warmup emails in different languages and options to customize your templates. 

Moreover, this ESP-specific warmup is one of the main things they use to promote the Pro plan — and it just didn’t work as expected for me.

But honestly? 

That all felt like fluff. There’s nothing that says sending warmup emails in 5 languages will actually help your deliverability — and it felt more like a way to make the Pro plan look fancier than it really is.

In short: the basic warmup works, but a lot of the “extra” features didn’t really live up to the hype — especially considering how much you’re paying.

2. Email Reputation Check

The next feature that Warmup Inbox offers is monitoring your email reputation. 

This feature checks whether your email authentication records (like SPF, DKIM, and DMARC) are correctly set up, which is essential if you’re doing cold outreach or sending bulk emails.

Sounds useful, right?

But here’s what didn’t sit well with me:

I came across a few users who said their emails were getting blocked even after using Warmup Inbox. And when they reached out to support, they were told their authentication records weren’t set up properly.

The weird part? One of them actually replied back saying everything was already set up correctly.

So while Warmup Inbox says it helps monitor your sender reputation, it’s hard to say how well that feature actually works.

From what I saw, it didn’t seem very reliable — and for a tool that’s supposed to protect your deliverability, that’s a red flag.

3. Human-Like AI Generated Email Copies

Warmup Inbox uses AI to send personalized email warm-up copies that mimic a human sending pattern.. 

That feature is helpful because ESPs are more likely to trust natural-looking interactions over spammy or repetitive patterns.

It’s a decent feature, but let’s be real: most warmup tools offer this in some form. It’s not exactly a standout.

4. Language-Specific Warmup

Like the ESP warmup, this one is only available with the Pro plan ($49/month/inbox).

It lets you send warmup emails in five different languages —sounds fancy, right?

But here’s the thing: there’s nothing in Google or Outlook’s guidelines that says language plays a role in how they judge your sender reputation.

So honestly, this feels more like a feature added to justify the higher price — not something that’ll actually impact your deliverability.

5. Technical Setup Check

Warmup Inbox also offers to check your email authentication records. 

But here’s the catch: you’ll need to upgrade to a plan that costs five times more than the basic one. And that’s per inbox.

So, is this service really worth $79/month/inbox?

Honestly, no. You can check your SPF, DKIM, and DMARC records yourself, and there are other tools that can do it for free. 

Hence, there is no need to pay a premium for something this basic.

6. Scheduled Email Warmup

This feature lets you control your warmup schedule — like when your emails go out and how many get sent each day.

Sounds like a basic must-have, right?

Well, Warmup Inbox only gives it to you if you’re on the Pro Plan ($49/month/inbox).

Honestly? That was a bit of a shock — because most other warmup tools offer this in their basic plan without making a big deal out of it.

Pros and Cons of Warmup Inbox

One of the easiest ways to figure out if Warmup Inbox is right for you? Look at the pros and cons — and see which side weighs heavier.

Here’s how things stack up:

✅ Pros of Warmup Inbox

• You get an API key with every plan, so you can plug Warmup Inbox into your own setup
• The dashboard is simple and shows your deliverability stats clearly
• You can use custom templates 
• It uses real inboxes — not just fake warmup-only accounts

❌ Cons of Warmup Inbox

• It can be too aggressive with warmup emails, which might get your account blocked
• The basic plan only lets you send 75 emails/day
• ESP and language warmup don’t really add value, and they’re locked behind the pricey plans
• The user interface feels clunky and a bit outdated
• DNS setup help is only available on the most expensive plan
• It charges per inbox, so warming up multiple accounts can get expensive

All things considered? The cons slightly outweigh the pros on this one.

Warmup Inbox Pricing

Warmup Inbox offers 3 different pricing plans.

Let me walk you through all of them in detail:

Basic Plan – $15/month/inbox (Billed Annually)

Here’s what you get with the basic plan:

• 75 warmup emails/day, maximum reply rate of 25%
• Email reputation check, including email authentication checks
• Custom templates for email warmup
• 50 outreach emails/day
• A dashboard to measure your email deliverability

Who Should Use the Basic Plan?

Anyone who needs basic email warmup capabilities for only one email account. 

Pro Plan – $49/month/inbox (Billed Annually)

With the Pro plan, you get everything in the Basic plan plus:

• 250 warmup emails/day, with a reply rate of up to 45%
• Language and ESP warmup
• Deliverability statistics on custom warmup email templates
• Scheduled email warmup
• Priority customer support

Who Should Use the Pro Plan?

The Pro plan might be ideal for enterprise users who want to gradually increase their sending volume to up to 250 emails/day and test the deliverability of their custom templates. 

Max Plan – $79/month/inbox (Billed Annually)

With the Max plan, you get everything in the Basic and Pro plans, along with:

• 1000 warmup emails/day, with a reply rate of up to 65%
• Technical setup, including SPF, DKIM, and DMARC authentication
• Unlimited developers API
• Premium customer support

Who Should Use the Max Plan?

The Max plan might be ideal for enterprises that want to scale up their warmup campaign and need help authenticating their email accounts. However, the cost of warming up multiple email accounts can be really high!

What are the Users Saying?

TrustPilot: 4.7/5⭐️
G2: 4.7/5⭐️
Capterra: 4.5/5⭐️

Warmup Inbox has mostly positive reviews on platforms like TrustPilot, G2, and Capterra.

Most users say the setup is easy, and the tool does what it promises — it helps improve email deliverability.

That said, even the happy customers point out one thing: it’s pricey for what it offers.

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What really caught my attention was that most of the negative reviews came from users saying their email accounts got blocked just for signing up with Warmup Inbox!

So yeah, using Warmup Inbox can be risky — if it works, great. But if it doesn’t, you could end up permanently losing your email account.

Does Warmup Inbox Live Up to Its Promise?

If you’re just getting started and only need to warm up one inbox, the Basic plan might be worth a shot.

But for anything more — multiple inboxes, higher volume, or advanced features — Warmup Inbox quickly gets expensive without offering enough in return.

And with the kind of risk some users have faced (hello, blocked domains), it’s just not a tool I’d fully trust.

There are better, safer, and more affordable options out there that can warm up your inbox without burning a hole in your wallet or risking your sender reputation.

If I were you, I’d look for alternatives to Warmup Inbox that get the job done for less.

The Best Warmup Inbox Alternative for 2025

If you want a simple but powerful email warmup tool that actually increases your sender reputation, I’d recommend checking out TrulyInbox.

Here’s how it stands out as a Warmup Inbox alternative:

As you can see, TrulyInbox gives you more value for your money — especially because you can connect unlimited inboxes.

Setup takes less than five minutes, and it works seamlessly with all major ESPs.

The best part? You can try TrulyInbox with its forever-free plan and explore everything it has to offer before spending a dime.

FAQs on Warmup Inbox Review

1. Does Warmup Inbox offer a free trial?

Yes, Warmup Inbox offers a 7-day free trial, but I’ve come across reviews that say it comes with very limited features. 

2. Is there a more affordable alternative to Warmup Inbox?

Yes, there are many affordable alternatives to Warmup Inbox, such as TrulyInbox. It lets you connect unlimited email accounts for warmup and comes with a forever-free plan.

3. What is the best alternative to Warmup Inbox?

TrulyInbox is the best alternative to Warmup Inbox due to its high email deliverability rate, no limit on the number of emails you can connect for warmup, and extremely affordable pricing plans.