MailBomb
Alternative & Review

MailBomb competes entirely on price. They sell Google Workspace, Microsoft 365, and pre-warmed accounts at rock-bottom rates. They claim to have served over 1,500 companies in the last six years. They automate the DNS setup and connect the accounts to your sending tools. Their main selling point is letting you start sending cold emails for almost no money upfront.

MailBomb does not have a public profile on G2 or Trustpilot.

There are no direct mentions of MailBomb on the major Reddit cold email communities (not a good sign, though).

🟢 Very cheap: You can get accounts for as low as $1 per inbox if you buy in bulk.
🟢 Long trial: They let you test up to 9 accounts for 45 days for free.
🟢 Automated setup: They handle the DNS records and tool integrations for you.

🔴 Questionable quality: Extremely cheap accounts often share IPs with spammers, which ruins your deliverability.
🔴 Basic tech: They do not offer IP rotation or self-healing mailboxes.
🔴 No public proof: They claim thousands of customers, but no one reviews them online.

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.
🟢 Self-Healing Rotation: An automated resting period for mailboxes every two weeks that clears provider flags and recovers reputation on autopilot.
🟢 API & MCP Automation: Create domains and mailboxes, export to your sequencer in one call – or manage it all from your AI assistant through our MCP server.

🔴 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.

Mailbomb doesn't have its own infrastructure; they simply resell Google Workspace and Microsoft accounts. However, official business-licensed accounts cannot cost less than $3! There is a high probability that you'll end up with cheap EDU accounts linked to Pakistani or Indian IPs. If that happens, your domains will be blacklisted within a week. What seemed like savings will end up costing you more in lost domains, new mailboxes, and wasted time.

Maildoso.ai costs a bit more upfront, but you get a system that actually protects your campaigns. IP rotation and self-healing mailboxes ensure your emails reach the primary inbox, giving you a real return on your investment.