Cheap Inboxes
Alternative & Review

The company was founded in August 2024 by Ben Rasmussen.

Cheap Inboxes positions itself as a provider of pre-warmed Google & Microsoft mailboxes specifically tailored for cold email campaigns, particularly for AI-native agencies. The service highlights its ability to ensure high deliverability through automated inbox creation, DNS setup, and integration with various platforms (Instantly, Smartlead, Reachinbox, Reply, Lemlist).

The platform emphasizes isolated workspaces, with a dedicated domain per workspace, and offers a developer-first API for extensive management capabilities.

Trustpilot: 4.7/5, 26 reviews

"I bought from cheapinboxes.com and it was a good experience, and the deliverability is great. Full disclosure, it's a buddy of mine's" – Cold Emails Setup

"pretty darn good. been using Cheapinboxes.com for a while now... no issues so far." – Deliverability of Cheapinboxes.com

🟢 Pre-warmed mailboxes: Offers pre-warmed Google & Microsoft mailboxes, which can significantly aid deliverability from the start.
🟢 Isolated Workspaces: Provides one domain per workspace, ensuring isolation and potentially better sender reputation management.
🟢 Developer-First API: Features a comprehensive API for advanced management and integration with existing workflows.
🟢 Excellent Support: Advertises 24/7 support with real humans and an average response time of less than 5 minutes.

🔴 Refund Policy Unclear: The ToS doesn't explain the refund policy clearly.
🔴 No Explicit Free Trial: A free trial is not explicitly mentioned on their website.

Maildoso is a cold outreach infrastructure provider – we offer domains, SMTP mailboxes, and Google Workspace accounts. The company was founded in August 2023 in Granite Bay, California, by Nikita Bykadarov (Nikita Maildoso).

While other providers offer shared or dedicated IPs, we have developed IP rotation. This means your emails are sent from hundreds of different IPs (making it harder for spam filters to detect a sending pattern), and whenever any IP gets blacklisted, we automatically swap it out for a clean one.

We have also implemented self-healing mailbox technology, which both restores burned-out mailboxes and protects your active email accounts.

The result?
As of May 2026, the spam rate across our entire network of mailboxes is around 5%.

G2: 4.7/5 (181 reviews)

"Tried it mainly because of the good price, but ended up sticking with it since deliverability’s been pretty stable so far" – Thinking about trying "Maildoso". Has anyone here used it? Is it actually better than other tools?

"I tested a small batch first and results were comparable to our Google setup. Ended up moving more campaigns there because of the lower cost. That's a good strategy, buy small package and compare with your current setup" – I want to try Maildoso. What do you guys think about it?

🟢 Dynamic IP Rotation: We rotate your IP addresses in real-time – if an IP gets flagged or blacklisted, we instantly swap it for a clean one before your campaign takes a hit, ensuring your emails consistently land in the primary inbox rather than getting stuck in spam.
🟢 Self-Healing Rotation: An automated resting period for mailboxes every two weeks that clears provider flags and recovers reputation on autopilot.
🟢 Global Customer Domain Tracking: Proprietary technology that allows you to safely include links without compromising your sender reputation.
🟢 Automated Inbox Placement Tests: Free email deliverability infrastructure testing every three days for all mailboxes, giving you real-time visibility into your health.

🔴 Conservative Limits: We suggest sticking to 15 emails a day per box to keep your domains healthy for the long run.
🔴 Google/SMTP Focus: We do not support Microsoft 365/Outlook/Azure environments at this time.
🔴 Lack of built-in warmup. We do not have an integrated warm-up yet, but we are currently working on it.

Do not choose a provider just because they offer the cheapest inboxes. Cheap infrastructure always costs more in the long run. When your deliverability drops, you pay for it in three ways:

1. You burn expensive leads. Good B2B data costs money. If your emails land in the spam folder, you waste those leads. You pay for contacts who never even see your pitch.
2. You destroy your domains. Once spam filters flag a domain, it is incredibly hard to fix. You usually have to throw the domain away, buy a new one, and start the warm-up process all over again.
3. You lose revenue. Every email that goes to spam is a missed meeting. In B2B sales, missing one connection can cost you thousands of dollars in closed revenue.

You have to treat cold email infrastructure as an investment. Maildoso.ai gives you the technical tools to protect your domains and keep your emails in the primary inbox. It is the only way to scale outbound sales profitably.

We officially recommend Cheap Inboxes.

Despite the name, which might suggest they sell cheap EDU accounts, their website indicates otherwise. For $3.50, you get official accounts (though it isn't specified what kind of IPs they use).

We also want to highlight that they offer API access, OAuth, and 24/7 support. In fact, when I reached out to them, I received a response within just 1–2 minutes.

Overall, we recognize Cheap Inboxes as a reputable provider. However, if you are looking to try SMTP mailboxes – which are 50% cheaper – then Maildoso is the place to be.