Primeforge:
The Ultimate Review (2026)

PrimeForge.ai is the premium infrastructure tier within the "Forge Stack" ecosystem. Unlike Mailforge (which uses shared SMTP), PrimeForge provisions legitimate Google Workspace and Microsoft 365 mailboxes on US-based IPs. According to their website (primeforge.ai), they cater to sales teams, agencies, and AI SDR workflows, offering automated DNS setup and pre-warmed mailboxes that are ready to send in 30 minutes.

G2: 4.4/5 (11 reviews)
Trustpilot: 3.9/5 (8 reviews)

Real user experiences from Reddit communities (r/coldemail, r/SaaS) show a generally positive to neutral reception for PrimeForge. The founder is active in these communities, which builds trust. Users recommend PrimeForge as a "good reseller of Google Workspace" and appreciate the deliverability boost that comes from using native Google/Microsoft infrastructure. Here are some representative posts:

Mailforge VS Primeforge: "Yep just smtp (mailforge) vs google/outlook (primeforge). The first thing I would consider is what industry you're sending to."

Are Instantly DFY emails a scam?: "Try Primeforge.ai They are good reseller of Google Workspace. And also you can checkout ScaledMail."

🟢 Native infrastructure: Real Google Workspace and MS365 accounts match ESPs, improving deliverability.
🟢 US-based IPs: Clean, geographically favorable IPs target US prospects effectively.
🟢 API access: API access lets teams automate provisioning.

🔴 High pricing: At $3.5 to $4.5 per mailbox, scaling becomes expensive.
🔴 No automated recovery: Lacks self-healing mailboxes to handle burned accounts.
🔴 Limited flexibility: No SMTP option with IP rotation to diversify sending.

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.

It’s tempting to choose a provider based solely on the lowest price, but budget infrastructure often leads to hidden costs. When deliverability drops, the consequences usually show up in three areas:

• Burned Leads: High-quality B2B data is expensive. If emails land in spam, those contacts never see the pitch, and the budget spent on data is lost.
• Damaged Domains: Fixing a domain flagged by spam filters can be a massive headache. Often, it’s easier to just buy a new one and start the warm-up process all over again.
• Missed Revenue: Every missed inbox is a missed meeting. In B2B sales, losing even one connection can mean missing out on thousands in closed revenue.

Cold email infrastructure is better viewed as an investment. Maildoso provides the technical tools to protect domain reputation and help keep emails in the primary inbox.

We have researched Primeforge, read the reviews, and formed our own opinion.

In our view, you can certainly give Primeforge a try.

The price is a bit higher than average—but official Google Workspace and Microsoft 365 accounts can't be cheap anyway (otherwise, you risk getting sketchy EDU profiles).

For $3.50–$4.50, you will get a fairly stable solution. Unlike other providers, there won't be any extra features here, only the most basic ones. But overall, not everyone really needs them.