Infraforge
Alternative & Review

Infraforge.ai is a private cold email infrastructure product in the Forge ecosystem. Its official homepage describes the platform as advanced private email infrastructure that lets teams create thousands of domains and mailboxes with a dedicated IP and automated DNS setup, or use prewarmed infrastructure for immediate sending.[1] The product is positioned for teams that want more control than they would get from generic mailbox procurement, especially agencies, lead generation providers, and outbound sales teams managing high-volume sending.

The official About page frames Infraforge as part of the broader Forge ecosystem created by Frank Sondors, Dovydas Volodko, and Daniel Sanchez after meeting through Y Combinator's founder matching platform in January 2023. Salesforge went live on June 15, 2023; Mailforge launched in January 2024 as shared cold email infrastructure; and Infraforge debuted in July 2024 as private email infrastructure.[6] The publicly extracted official About page did not specify a headquarters location, so this comparison does not infer one.

Infraforge's main difference is private infrastructure with dedicated IPs. The homepage emphasizes dedicated IPs, automated warmup and monitoring, built-in sender rotation, smart sending limits, automated DNS setup, bulk DNS updates, domain transferring, SSL and proxies, and compatibility with Salesforge and other sending tools.[1] A Salesforge directory page describes Infraforge as a high-performance private cold email infrastructure platform for teams that need complete control over their sending environment, with dedicated IPs, multi-IP provisioning, free DNS setup, API access, SSL/domain masking, performance visibility, flexible scaling, and a white-label reseller program.[7]

Infraforge does not present a simple public customer-count metric in the extracted official page text. The homepage does show an example interface with 144 active domains, 2,000 mailbox slots, 574 active mailboxes, and 4 dedicated IPs, but this appears to be a product illustration rather than a verified total customer or mailbox count.[1] The strongest official scale claim is that teams can set up unlimited domains and mailboxes and that the platform is designed for creating thousands of domains and mailboxes.[1]

Trustpilot: 4.0/5, 6 reviews
G2: 4.8/5, 51 reviews

"Infraforge - used it briefly when someone in a discord recommended it. it was alright for outlook accounts. nothing really wrong with it but nothing that stood out either. felt like a mailforge alternative without any real advantage over mailforge. tried it for a couple campaigns and just went back to what i was already using." – every cold email tool ive used in the last 2 years ranked by whether i still use it or not

"I use mailforge. I have a handful of clients I operate for on Mailforge. Mailforge is on a shared IP, which from my experience, has great deliverability. The same company has infraforge which operates on a private IP. We ran some tests and our deliverability was worse on infraforge." – Are Cold Email Infrastructure tools worth it?

🟢 Dedicated IP infrastructure: Infraforge is built around private infrastructure and dedicated IPs, which can be attractive for teams that want isolation instead of shared infrastructure.
🟢 Automated DNS setup: SPF, DKIM, DMARC, and domain configuration can become a major operational bottleneck at scale. Infraforge highlights automated DNS setup and bulk DNS updates.
🟢 API access: The pricing page states that access to the Infraforge API is included with the subscription, which is useful for agencies and technical teams automating infrastructure workflows.
🟢 White-label and reseller angle: Infraforge promotes a reseller program with 20% revenue share and white-label capabilities, which may fit agencies selling infrastructure as part of a service package.

🔴 Dedicated IPs add cost and responsibility: Infraforge lists IP addresses as a $99 per IP per month add-on when billed quarterly. Dedicated IPs can improve control, but they also require careful reputation management and can raise total cost.
🔴 Minimum and add-on structure is less straightforward than simple mailbox pricing: The pricing calculator includes mailbox slots, domains, SSL/domain masking, IPs, and Masterbox as separate cost components. This can make budgeting harder for teams that want a simple per-mailbox model.
🔴 No clearly disclosed official money-back guarantee in the public pricing text examined: The extracted official pricing page includes subscription inclusions and add-ons, but it does not show refund terms comparable to Maildoso's explicit 30-day money-back guarantee.
🔴 Trial terms are not fully transparent on the pricing page: Infraforge has "Try it for free" CTAs and an FAQ question about a free trial, but the extracted public page text does not expose exact trial terms. One accessible third-party review describes Infraforge as having no free trial, so buyers should verify terms before committing.

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. 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.

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." (My Maildoso review after testing 100 mailboxes over 3 months)

"Checking back in after another 14 days of volume. We’re officially at 500 mailboxes now and the infrastructure is holding up remarkably well. Only 14 boxes are currently in the "cooling off" period, which is less than 3% of the fleet (totally manageable). Reply rates are hovering at 2.3%, keeping our cost per reply at that $0.10 mark. Honestly, the biggest win so far isn't just the price, it’s the lack of "clustering" issues that usually plague us at this volume on GW. (The truth about SMTP in 2026: A very deep Maildoso review (300k emails sent))"

🟢 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.

🔴 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.

It’s great that Infraforge offers dedicated IPs (but mind that it costs $99/mo – the highest price on the market). However, based on our experience and what new clients tell us during demos, dedicated servers alone aren't enough for stable mailbox performance. When your IP sends a high volume of similar emails, it becomes much easier for filters to track.

With Maildoso, your emails are sent from thousands of different IPs that are constantly rotating. These IPs also handle traffic from other senders – this completely confuses spam filters and prevents them from identifying sending patterns.
Most importantly, if an issue arises with any specific IP, we simply disable it and replace it with a clean one. This happens automatically in a fraction of a second; you won't even notice.

And let’s be honest: Infraforge' lowest price per mailbox is still higher than Maildoso's highest price. There’s really no reason to overpay.