Warminboxes Reviews 

8
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TrustScore 4 out of 5

4.0

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Company details

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  3. Software Vendor

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WarmInboxes provides cold email infrastructure for sales teams, agencies and outbound operators. We offer prewarmed and fresh Google Workspace, Microsoft 365 and Azure inboxes, along with sending domains, DNS configuration and infrastructure designed specifically for cold email. Customers can use WarmInboxes to launch new outbound campaigns, scale existing sending capacity or replace infrastructure that has lost deliverability. WarmInboxes also builds free email deliverability tools for checking SPF, DKIM, DMARC, domain reputation, blacklists, tracking domains, email headers and campaign health. Our cold email research, operator playbooks and Deliverability AI tools help teams diagnose problems before replacing infrastructure unnecessarily. Our goal is simple: make cold email infrastructure easier to buy, manage, monitor and troubleshoot. Learn more at WarmInboxes.com.


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4.0

Great

TrustScore 4 out of 5

8 reviews

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4.0

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Rated 5 out of 5 stars

$53,800+ Spent, 18+ Months Working with them — Here's Why I Stay

I've been working with Huz for over a year and a half and have spent more than $53,800 with his team. I can confidently say he's one of the most ethical and transparent people I've met in this industry.

Of course, no infrastructure provider is perfect. Accounts burn, deliveries sometimes get delayed, and shit inevitably goes wrong.

But here's the thing: you're going to face issues regardless of which provider you choose. What really matters is how they handle those issues when things go south.

And that's exactly why I keep choosing Huz. I know that when shit hits the fan, he'll be there, willing to help and find a solution rather than disappear or make excuses.

What I appreciate even more is that he's gone beyond simply providing infrastructure. On multiple occasions, he's jumped on calls with me to brainstorm campaign strategies for my clients. Some of his suggestions genuinely helped us save accounts that were at risk of churning.

That's not something you typically get from an infrastructure provider.

Really grateful for the relationship we've built over the past 18+ months. Highly recommend Huz and his team.

13 November 2026
Unprompted review
Rated 1 out of 5 stars

"Nothing is deployed below 95%." About 20% of my test emails reached the inbox.

What I bought: prewarmed Google inboxes on .co domains.

What WarmInboxes says: aged, vetted domains and a seed test on every batch before delivery. Their site says that after their own test, "nothing is deployed below 95%".

What I measured with GlockApps on November 3, one test from each domain, sent through Smartlead:
- About 20% of emails reached the inbox, the rest went to spam
- 0% reached the inbox at Google Workspace accounts older than four years
- 38% of the domains were on SURBL's ABUSE list that day, a domain blocklist that spam filters use
- SPF, DKIM and DMARC passed on every domain
- For comparison, the same text sent directly from Gmail on my own domain on November 2 reached the inbox 100% of the time
- All the domains were registered on the same day, August 6, 2026 (WHOIS)

What happened next: they refused to replace the domains. Then I asked for a refund and for the placement results their guide says customers see before deployment. They refused the refund, sent no results, and said their team had checked the domains and found no issues.

Full GlockApps reports for each domain: prewarmed-inbox-test.pages.dev

3 November 2026
Unprompted review

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