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Mailforge
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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 Mailforge.ai and Maildoso.ai to help you select the best platform.
- Maildoso.ai cuts costs at scale. Mailboxes start at $1.80/month. Mailforge.ai charges $2 to $3 per mailbox.
- Maildoso.ai features self-healing mailboxes and IP rotation. These tools maintain deliverability. Mailforge lacks them.
- Mailforge uses shared IPs. This risks deliverability if other users trigger spam filters.
- Both platforms offer rapid, automated setup. Maildoso.ai provides full API access. Mailforge does not.
Key Takeaways
Mailforge Review
Mailforge.ai is a cold email infrastructure provider that is part of the broader "Forge Stack" ecosystem (which also includes Salesforge and Primeforge). According to their official website (mailforge.ai), Mailforge is used by over 10,000 businesses. The platform focuses on providing shared email infrastructure that can be set up in under 5 minutes. They aim to simplify the process of creating hundreds of domains and mailboxes with automated DNS setup, catering to users who need a fast, low-cost entry into bulk sending.
Rating & Reviews
Real user experiences from Reddit communities (r/coldemail, r/SaaS) highlight some critical concerns regarding Mailforge.ai. Multiple users have reported severe deliverability issues, specifically noting that the shared IP infrastructure causes emails to land in spam. Here are some representative posts:
Just launched mailforge.ai to scale cold email infrastructure in minutes: "SMTP inbox providers like Mailforge are garbage. Terrible deliverability. Your cold emails will go to spam. Gmail, Outlook etc can see that IP addresses of the email servers that Mailforge uses, and will send their emails to spam folder, since the only people using their email servers are spammers."
Zero Responses/OOOs After 500 Sends (Mailforge + Smartlead): "Zero OOOs after 500 sends is a massive red flag that your emails aren't reaching inboxes at all. 50% spam rate on Gmail tests confirms your domains are flagged. Shared IPs through Mailforge might be contaminated from other users burning them."
Just launched mailforge.ai to scale cold email infrastructure in minutes: "SMTP inbox providers like Mailforge are garbage. Terrible deliverability. Your cold emails will go to spam. Gmail, Outlook etc can see that IP addresses of the email servers that Mailforge uses, and will send their emails to spam folder, since the only people using their email servers are spammers."
Zero Responses/OOOs After 500 Sends (Mailforge + Smartlead): "Zero OOOs after 500 sends is a massive red flag that your emails aren't reaching inboxes at all. 50% spam rate on Gmail tests confirms your domains are flagged. Shared IPs through Mailforge might be contaminated from other users burning them."
Mailforge Pros
🟢 Fast setup: Automated DNS configures everything in 5 minutes.
🟢 Ecosystem integration: Works smoothly with Salesforge and other stack tools.
🟢 Ecosystem integration: Works smoothly with Salesforge and other stack tools.
Mailforge Cons
🔴 Shared IP risks: Shared IPs tie your reputation to others. If one user spams, the IP block suffers, tanking your deliverability.
🔴 Higher base cost: At $3.00 to $3.75 per mailbox, it costs more than other SMTP options.
🔴 No advanced recovery: Lacks self-healing mailboxes or IP rotation to protect your reputation.
🔴 Higher base cost: At $3.00 to $3.75 per mailbox, it costs more than other SMTP options.
🔴 No advanced recovery: Lacks self-healing mailboxes or IP rotation to protect your reputation.
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
Mailforge
$2-3
$30
Feature Comparison Table
Feature
Maildoso
Mailforge
Mailbox types
SMTP, GW
SMTP
IP type
IP rotation
Shared 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
If you use the Salesforge ecosystem and want a quick shared SMTP setup, Mailforge.ai works. But shared IPs risk your deliverability.
Maildoso.ai scales safely and efficiently. It costs less per mailbox (starting at $1.80) and provides critical safeguards. With IP rotation, self-healing mailboxes, and Google Workspace accounts, Maildoso lands your emails in the primary inbox. With full API access and a 30-day money-back guarantee, Maildoso.ai delivers a robust solution for B2B outreach.
Maildoso.ai scales safely and efficiently. It costs less per mailbox (starting at $1.80) and provides critical safeguards. With IP rotation, self-healing mailboxes, and Google Workspace accounts, Maildoso lands your emails in the primary inbox. With full API access and a 30-day money-back guarantee, Maildoso.ai delivers a robust solution for B2B outreach.
FAQ
- Q:Why are shared IPs a risk in cold email?A:Shared IPs (like Mailforge's) tie your sender reputation to everyone on that IP. If another user spams and blacklists the IP, your emails go to spam, even with perfect copy.
- 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:Maildoso.ai offers full API access. You automate mailbox creation and connect custom tools. Mailforge.ai lacks API access.
- 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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