If you're looking up mailforge, you're probably evaluating cold email infrastructure and trying to figure out whether it's the right play for your team. This is a fair question worth spending time on. The wrong infrastructure decision costs you domains, sends you to spam, and eats weeks you don't have.
Here's the thing — Mailforge is a legitimate tool built by people who know cold email. This isn't a post where we trash the competition. But understanding exactly what Mailforge does (and where it hands off to you) is how you make the right call. Let's walk through it.
What Is Mailforge?
Mailforge is a shared cold email infrastructure platform built by the Salesforge team. The core value prop: set up hundreds of domains and mailboxes fast — 10 minutes or less — with automatic DNS configuration (SPF, DKIM, DMARC) handled for you. It's designed specifically for cold outreach, unlike Gmail or Outlook which are general-purpose ESPs that tolerate cold email rather than being built for it.
Mailforge runs on SMTP infrastructure with its own sending pool. The platform takes care of warmup, DNS records, and domain provisioning. You connect your sequencer of choice and start sending.
The pitch is speed and affordability. And to be fair — on those dimensions, it delivers.
Mailforge Key Features
Here's what Mailforge actually gets you:
- Fast infrastructure provisioning. This is where Mailforge shines. Set up nameservers, and within minutes you've got domains and mailboxes ready. For teams that need to spin up volume quickly, this is a real advantage.
- Automatic DNS configuration. SPF, DKIM, DMARC, custom tracking domain — all handled when you point your nameservers to Mailforge. No manual record entry, no room for human error. They also offer SSL and domain masking as an add-on.
- Built-in warmup. Automated warmup is included to build sender reputation before you start sending cold. This matters — sending cold on a fresh domain without warmup is how you torch deliverability on day one.
- Sequencer-agnostic. Mailforge works with Instantly, Smartlead, and most major sequencers. You're not locked into one sending tool.
- The Forge Stack integration. If you're using Salesforge as your AI sequencer, Mailforge plugs in natively. This is the cleanest experience they offer — end-to-end within their ecosystem.
Mailforge Pricing
Mailforge pricing runs roughly $2–$3 per mailbox per month, which is genuinely affordable. Domains are around $14 each. They recommend 2–3 mailboxes per domain for best deliverability, which is standard practice. SSL and domain masking is an additional $2/month per domain.
To give you an idea of the math: if you want to reach 1,000 contacts with a 5-email sequence using 10 domains and 10 mailboxes, you're looking at around $140/year on domains and ~$30/month on mailboxes. That's genuinely cheap compared to Google Workspace ($1,680/year for 200 inboxes) or MS365 ($1,200/year).
The pricing makes sense for teams in cost-control mode or early in their cold email journey. The tradeoff, as we'll cover, is in the infrastructure model itself.
Mailforge Review: Honest Pros and Cons
Look, Mailforge is a real product built by people who run cold email campaigns. Here's what we actually see in terms of honest strengths and limitations:
What Mailforge Does Well
- Speed is real. Sub-10-minute provisioning is not hype. If you need 50 domains set up by tomorrow, Mailforge can do that. Nothing else in this price range is that fast.
- The DNS automation is solid. Manually setting DNS records for 50 domains is tedious and error-prone. Mailforge's bulk DNS management is genuinely useful and reduces the chance of misconfig.
- Price is competitive. At $2–$3/mailbox/month, you're paying a fraction of Google Workspace rates. For volume players on tight margins, this matters.
- The Forge ecosystem is coherent. If you're using Salesforge for AI sequencing, Mailforge and Infraforge slot in cleanly. The stack is designed to work together.
Where Mailforge Has Limitations
- SMTP-only — no Google Workspace or Microsoft 365 accounts. This is the core limitation. Mailforge provisions SMTP mailboxes, not actual Google or Microsoft accounts. ESPs treat emails from their own platforms differently than emails from third-party SMTP servers. You're missing the deliverability benefits that come from sending through the same infrastructure your recipients use.
- No human oversight. Mailforge is automated. There's no team watching your inbox health, no expert diagnosing why your accounts suddenly stopped hitting the inbox. When something goes sideways, you're troubleshooting alone or waiting on support. Cold email breaks in ways automation can't diagnose — tenant blocks, ESP policy changes, warmup anomalies. Having humans in the loop is the difference between hours of downtime and a quick fix.
- Scale has a ceiling. At high volume — dozens of clients, hundreds of active domains — the fully automated model creates inconsistency. What works for 20 inboxes doesn't always hold at 200.
- No pre-aged domains. Fresh domains need warmup time no matter how fast you provision them. Mailforge doesn't offer pre-aged or pre-warmed domain options, so you're always starting from zero reputation.
Who Mailforge Is a Good Fit For
Mailforge makes sense if you're:
- Early-stage, testing cold email for the first time and need the cheapest way in
- Already in the Salesforge ecosystem and want tight native integration
- Running sub-50-inbox SMTP infrastructure and comfortable with the model
- A solo operator comfortable troubleshooting deliverability independently
- Willing to trade ESP-level deliverability advantages for faster, cheaper provisioning
The thing is, this is a legitimate use case. Not every cold email operation needs enterprise-grade managed infrastructure. If you're early, experimenting, or price-constrained, Mailforge gets you running fast.
Mailforge vs. ScaledMail: Head-to-Head Comparison
Here's where the two approaches actually diverge. The comparison isn't about who's better in some abstract sense — it's about what your operation actually needs.
The core architectural difference is ESP type and management model. ScaledMail provisions actual Google Workspace and Microsoft 365 accounts on isolated tenants — real ESP accounts that benefit from sending through the same infrastructure your recipients use. Mailforge runs SMTP infrastructure, which is faster and cheaper but doesn't carry the same ESP-level trust signals.
At the end of the day, if you're running 10–20 mailboxes and primarily care about cost and speed, Mailforge can get the job done. If you're running 50+ inboxes, working with client accounts, or depend on consistent deliverability for revenue, the SMTP-only model and lack of human oversight create limitations you'll feel.
What We Actually See at Scale
We manage 217,600+ inboxes and send 20M+ cold emails per month. Here's what we actually see when teams try to scale shared infrastructure:
The SMTP-vs-ESP gap shows up over time. Month one on Mailforge usually looks fine — the infrastructure is fresh and warmup runs cleanly. Month three is where teams start hitting walls. SMTP infrastructure doesn't carry the same trust signals as sending from actual Google Workspace or Microsoft 365 accounts. ESPs treat mail from their own platforms differently, and that gap compounds over time — especially when you're trying to land in enterprise inboxes that run Microsoft or Google.
Support gaps hurt at scale. When you have a Slack channel with our team and something goes wrong with your inboxes at 9am on a Monday, we're on it. When you're on a shared platform that's automated, you're opening a ticket and waiting. That difference is not a minor inconvenience when deliverability is your pipeline's foundation.
Human oversight is not automatable. Inbox health monitoring by experienced people who've seen hundreds of thousands of inbox patterns catches things no algorithm flags. This is the move that keeps your domains from getting burned — and it's what separates a managed infrastructure service from a provisioning tool.
Mailforge Pricing vs. ScaledMail Pricing
Mailforge is cheaper per mailbox, full stop. At $2–$3/mailbox/month, it's among the most affordable options in the space.
ScaledMail pricing is month-to-month with volume discounts at $1K/month and $5K/month. What's included: domains (or bring your own), inbox provisioning, full DNS setup, warmup guidance and tool compatibility (we recommend the 2:1 ratio — compatible with all major warmup tools), ongoing monitoring, and dedicated Slack support. The per-mailbox cost is higher — but so is what you're getting.
The honest framing: Mailforge pricing makes sense when you're testing or on tight margins. ScaledMail pricing makes sense when consistent deliverability is worth paying for. What we actually hear from teams that switch is that they were paying less per mailbox with Mailforge but spending more time and pipeline on deliverability issues. The math shifts when you factor in campaign performance.
FAQ: Mailforge Review & Alternatives
Is Mailforge good for cold email?
Yes, for the right use case. Mailforge is a solid choice for teams that need fast, affordable SMTP infrastructure built specifically for cold outreach. It handles DNS setup automatically and gets you sending quickly. The limitation is that SMTP-only infrastructure doesn't carry the same ESP-level trust signals as Google Workspace or Microsoft 365, and there's no human oversight when things go wrong.
What is the main difference between Mailforge and ScaledMail?
Two things: ESP type and human oversight. Mailforge runs SMTP infrastructure with fully automated management — fast and cheap, no human in the loop. ScaledMail provisions actual Google Workspace and Microsoft 365 accounts on isolated tenants, with human experts managing deliverability. ScaledMail also offers pre-aged domains, dedicated Slack + web chat + in-app support, and month-to-month billing.
Does Mailforge include warmup?
Yes. Mailforge includes automated warmup to build sender reputation. This is standard — you need warmup on any fresh domain before sending cold. ScaledMail is compatible with all warmup tools and recommends maintaining the 2:1 warmup ratio permanently. If you want to skip warmup entirely, ScaledMail's pre-aged domain options let you start on infrastructure that's already established.
What is the mailforge alternative for agencies?
For agencies managing multiple clients with separate domain sets, ScaledMail is the play. Isolated M365/Google tenants mean client A's deliverability is never affected by client B's sending. Plus you get actual ESP accounts (not SMTP) and human experts managing the infrastructure. That matters when clients are paying you for results.
How long does ScaledMail setup take compared to Mailforge?
Mailforge setup is ~10 minutes — that's a real advantage. ScaledMail setup takes 2–4 business days. That's not a bug, it's a feature: our team is doing the DNS configuration, warmup scheduling, and infrastructure provisioning manually to ensure it's right. The tradeoff is time upfront for consistency long-term. If you need infrastructure live tomorrow, Mailforge wins on speed. If you need it to actually work six months from now, the 2–4 day window is worth it.
The Bottom Line on Mailforge
Mailforge is a real product that does what it says. The mailforge pricing is competitive, the DNS automation is solid, and for certain use cases — small teams, solo operators, early-stage testing — it's a reasonable choice.
What Mailforge doesn't give you: actual Google Workspace and Microsoft 365 accounts, isolated tenants, human oversight, pre-aged domains, or the kind of expert support that actually diagnoses deliverability issues. When you're running volume that matters — agencies, growth-stage companies, teams where cold email drives pipeline — those gaps create real problems.
The move is to match your infrastructure to your stage. Mailforge is a good starting point. ScaledMail is where teams go when they need infrastructure that can't afford to fail.
If you're at the point where deliverability directly impacts revenue, book a call and we'll walk through your setup. Or if you already know what you need, get started at ScaledMail — month-to-month, no quarterly commitments, and a team that's actually managing your inboxes.