Primeforge

1. 1

   You size the setup with the vendor's calculator, entering emails per sequence, mailboxes per domain, and monthly contact volume. It returns how many domains and mailbox slots you need, which is the arithmetic most first-time buyers get wrong by loading far too many mailboxes onto a single domain.

2. 2

   You buy domains through Primeforge at about $14 a year for a .com, or connect domains you already own. Primeforge takes over the DNS: nameservers, MX, SPF, DKIM key generation and publication, and a DMARC policy, applied identically across every domain so there is no hand-edited record waiting to fail silently.

3. 3

   You provision mailboxes into your slots as genuine Google Workspace or Microsoft 365 accounts on US IP addresses. Bulk creation with generated naming means twenty mailboxes take about as long as one, and slots can be recycled freely as mailboxes are retired.

4. 4

   You connect the mailboxes to your sending platform, either by exporting credentials or through the Primeforge API, which is included in the subscription and is the part agencies use to provision infrastructure per client without touching the console.

5. 5

   You then warm the mailboxes with Warmforge or whatever warm-up your sequencer bundles, and ramp slowly. Real Workspace mailboxes place better than shared infrastructure, but they are still brand-new senders with no history, and sending real volume on day one wastes the purchase.

Slot-based subscription for mailbox capacity with a ten-slot minimum, billed monthly or annually, plus separate per-year domain registration.

Value assessment: Model it against volume. At 10,000 emails a month, a conservative 30 sends a day per mailbox needs roughly eleven to fifteen mailboxes, so about $68 a month of slots plus two or three domains, which is a rounding error next to the value of not getting filtered. At 100,000 a month you need on the order of 110 to 150 mailboxes, about $495 to $675 a month of slots plus twenty to thirty domains, and that is where the comparison gets interesting: Maildoso would charge a fraction of that on shared SMTP infrastructure, and Mailforge about a third less. The question is not whether Primeforge is cheap, it is whether real provider mailboxes place well enough to justify a difference measured in hundreds of dollars a month. For most small businesses sending to Gmail and Outlook prospects, they do.

Setup time

Provisioning takes minutes and DNS propagates within hours, but plan two to three weeks before meaningful volume because warm-up and ramp-up govern the real timeline, not the provisioning speed.

Learning curve

Low for the tool, moderate for the discipline. The console and calculator are simple. What takes judgement is how many mailboxes per domain to run, what daily caps to hold, and when to retire a mailbox, and only the first of those is answered for you.

Onboarding

Fully self-serve checkout with no sales call at any volume. Support is included, and the API is documented for agencies that want to skip the console entirely.

Migration notes

Existing domains can be brought in and reconfigured rather than re-registered, preserving domain age. Treat domains as the portable asset and mailboxes as disposable: moving providers means repointing DNS and losing the hosted mailboxes, while your sequencer and lists are untouched. Because credentials connect to any IMAP and SMTP platform, changing sending tool does not require changing infrastructure.

Platforms

Web appBulk domain and mailbox provisioning consoleREST API

API

Primeforge API access is included in the subscription, covering domain and mailbox provisioning, which is the main technical difference from the shared Mailforge tier.

Compliance

SPF, DKIM, and DMARC configured automatically on every provisioned domainMailboxes are genuine Google Workspace and Microsoft 365 accounts subject to those providers' acceptable use policiesCAN-SPAM and GDPR sender obligations remain entirely yours, since Primeforge supplies infrastructure and never touches campaign content

Data residency

Mailboxes are provisioned on US IP addresses; formal data residency options are not published.

SSO

Not advertised.

Security notes

The substantive security and deliverability difference from cheaper infrastructure is that these are real provider tenants rather than shared cold email infrastructure, so authentication, spam handling, and account policy are Google's and Microsoft's. That is a benefit for placement and a constraint on behavior, since both providers enforce their own policies against abusive bulk sending regardless of who provisioned the account.

Channels

Email supportIn-app supportSupport included in every subscription

Documentation

Documentation covering domain setup, DNS automation, bulk mailbox provisioning, the API, and connecting mailboxes to third-party sending platforms.

Community

Active audience around the Salesforge founder's public content on outbound and deliverability.

Founded

2022

Headquarters

Tallinn, Estonia

Ownership

Founder-led, largely bootstrapped with a small early round

Founders

Frank Sondors

Employees

Small team; exact headcount not disclosed

Funding

Salesforge, the parent, reported a pre-seed round of approximately $500K in 2024 and has otherwise grown on revenue, reporting roughly $3M ARR within about a year of launching its first product.

Primeforge is the sensible middle rung of cold email infrastructure. For $4.50 a mailbox a month it provisions genuine Google Workspace and Microsoft 365 accounts on US IPs, writes SPF, DKIM, and DMARC correctly across every domain, and gives you an API to do it all programmatically, which is exactly the combination an agency provisioning per client needs. The premium over shared infrastructure is about a dollar fifty a mailbox, which is far less than most buyers assume and usually the right side of the tradeoff when your prospects sit on Gmail and Outlook. Be clear on two things before buying. It is not a sequencer, so it is always a second bill. And it includes no warm-up, so a fresh setup is two to three weeks from being useful no matter how good the underlying accounts are. Within those constraints, it is the option to default to unless unit cost at very high volume is what governs your decision.

Written by the SaaSTracker editorial team. Awards, when shown, are judged against the published criteria in our methodology.