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Scaling cold email campaigns is a major challenge in B2B outbound marketing. The goal isn't just sending emails; it's landing in the primary inbox. Low deliverability burns domains and mailboxes, forcing you to restart the setup process. High costs, complex DNS configurations, and spam filters make choosing the right infrastructure critical. This guide compares PrimeForge.ai and Maildoso.ai to help you select the best platform.
- Maildoso.ai cuts costs. Google Workspace mailboxes start at $2.70-$4/month. PrimeForge charges $3.5 to $4.5 per mailbox.
- Maildoso.ai features self-healing mailboxes. This tool automatically recovers burned domains. PrimeForge lacks this feature.
- PrimeForge uses US-based IPs for Google and Microsoft accounts. Maildoso provides Google Workspace with the same IPs and SMTP with IP rotation for diverse strategies.
- Both platforms offer API access and automated DNS setup. You can easily automate workflows.
Key Takeaways
Primeforge Review
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.
Rating & 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."
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."
Primeforge Pros
🟢 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: Full API access lets teams automate provisioning.
🟢 US-based IPs: Clean, geographically favorable IPs target US prospects effectively.
🟢 API access: Full API access lets teams automate provisioning.
Primeforge Cons
🔴 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.
🔴 No automated recovery: Lacks self-healing mailboxes to handle burned accounts.
🔴 Limited flexibility: No SMTP option with IP rotation to diversify sending.
Maildoso Review
Maildoso isn’t a complex management suite or a sequence builder – we know that real outreach needs a rock-solid foundation. We understand how the inbox works way better than those "all-in-one" platforms like Inboxkit. From our self-healing mailbox rotation to automated email deliverability infrastructure checks, we do all the technical "dirty work" for you, so you can stop worrying about the tech and get back to closing deals.
We provide high-authority mailboxes designed to stay healthy for months, not weeks, allowing your outreach team to focus on the 1% of deals that matter rather than the 99% of tech that usually breaks. It’s a specialized environment for agencies looking for a reliable SMTP mailbox for agencies that have graduated from generalist tools.
We provide high-authority mailboxes designed to stay healthy for months, not weeks, allowing your outreach team to focus on the 1% of deals that matter rather than the 99% of tech that usually breaks. It’s a specialized environment for agencies looking for a reliable SMTP mailbox for agencies that have graduated from generalist tools.
Rating & Reviews
G2: 4.7/5 (181 reviews)
"For the price point it's been worth it for us. We're sending around 1,500-2,000 emails/day across those 100 mailboxes and reply rates have been decent (2.8-3.2% depending on the campaign, but that's more about copy and targeting obviously). The infrastructure has been stable enough that i'm not constantly putting out fires anymore which was the whole point." (Reddit)
Maildoso Pros
🟢 Dynamic IP Rotation: We don't just "aim" for the inbox—we engineer it. Our system automatically rotates 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 System: An automated resting period for mailboxes every two weeks that clears provider flags and recovers reputation on autopilot.
🟢 Hybrid Flexibility: The ability to seamlessly blend high-authority Google Workspace accounts with high-volume SMTP mailboxes.
🟢 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.
🟢 Unlimited Technical Audits: Free live sessions with experts who resolve up to 80% of issues through deep server-level forensic audits.
🟢 Advanced Captcha Protection: Technical barriers that shield your outreach domains from being linked back to your primary corporate assets.
🟢 Self-Healing Rotation System: An automated resting period for mailboxes every two weeks that clears provider flags and recovers reputation on autopilot.
🟢 Hybrid Flexibility: The ability to seamlessly blend high-authority Google Workspace accounts with high-volume SMTP mailboxes.
🟢 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.
🟢 Unlimited Technical Audits: Free live sessions with experts who resolve up to 80% of issues through deep server-level forensic audits.
🟢 Advanced Captcha Protection: Technical barriers that shield your outreach domains from being linked back to your primary corporate assets.
Maildoso Cons
🔴 Conservative Limits: We suggest sticking to 15 emails a day per box to keep your domains healthy for the long run. You are free to send more if you choose, but be aware that aggressive "blasting" is a fast track to burning your reputation.
🔴 Google/SMTP Focus: We do not support native Microsoft 365/Outlook environments at this time.
🔴 Google/SMTP Focus: We do not support native Microsoft 365/Outlook environments at this time.
Detailed Pricing Comparison
Mailbox type
Price per mailbox
Minimum package
Maildoso SMTP (domains included)
$1.8-2.5
$28
Maildoso GW
$2.7-4
$40
Primeforge
$3.5-4.5
$45
Feature Comparison Table
Feature
Maildoso
Primeforge
Mailbox types
SMTP, GW
GW, Microsoft 365
IP type
IP rotation
Cloud IPs
Self-healing mailboxes
Support
Email, Chat, Slack, Tech Audits
Email, chat
Refund policy
30-day guarantee
Strictly no refunds
Trials
300 mailboxes for 30 days
Final rating
⭐⭐⭐⭐⭐
⭐⭐
Final Thoughts
PrimeForge.ai works if you need US-based IPs for Microsoft 365 and have a high budget. Their automated setup and API access suit agencies.
However, Maildoso.ai scales efficiently. Maildoso provides Google Workspace accounts for nearly half the price. Maildoso includes self-healing mailboxes to recover burned accounts and SMTP with IP rotation. With a 30-day money-back guarantee and scaling at $1.80 per mailbox, Maildoso.ai delivers better value.
However, Maildoso.ai scales efficiently. Maildoso provides Google Workspace accounts for nearly half the price. Maildoso includes self-healing mailboxes to recover burned accounts and SMTP with IP rotation. With a 30-day money-back guarantee and scaling at $1.80 per mailbox, Maildoso.ai delivers better value.
FAQ
- Q:What are self-healing mailboxes in Maildoso?A:Maildoso detects burned or flagged mailboxes. It pauses the mailbox for 14 days to recover its reputation, then brings it back into rotation. You stop buying new accounts.
- Q:Do both platforms handle DNS setup automatically?A:Yes. Both automate SPF, DKIM, and DMARC records. You set up infrastructure in minutes.
- Q:Which platform is better for API integrations?A:Both offer full API access. You can automate mailbox creation and connect custom tools.
- Q:How does Maildoso's IP rotation work?A:For SMTP mailboxes, Maildoso rotates IPs. Campaigns send from different IP addresses, hiding sending patterns from spam filters and protecting deliverability.
Most cold emails fail simply because they land in spam. People never even see your offer.
Our SMTP and Google Workspace mailboxes are built specifically for outbound; this means your emails will finally be seen, and you’ll start getting more positive replies.
Our SMTP and Google Workspace mailboxes are built specifically for outbound; this means your emails will finally be seen, and you’ll start getting more positive replies.
Boost your outbound with our infrastructure!
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