Primeforge Review 2026

Last reviewed November 2026 by Théo Pascard

Primeforge

Google Workspace and Microsoft 365 mailboxes for cold email, from the Forge stack

Overview

Primeforge sells Google Workspace and Microsoft 365 mailboxes set up for cold email. It buys or connects the domains, writes the DNS records (SPF, DKIM, DMARC, custom tracking domain), creates the mailboxes with names and profile pictures, and hands them to any sending tool. It puts one Microsoft 365 tenant on each domain, offers pre-warmed mailboxes, bulk DNS updates and an API, MCP server and CLI, and is built for ESP matching: sending from Google to Google recipients and from Microsoft to Microsoft ones. It is part of Salesforge's Forge stack, next to Mailforge (shared infrastructure) and Infraforge (private IPs). Mailboxes cost $4.50 a month each with a 10-slot minimum, or about $3.75 on annual billing. Primeforge has 29 reviews on G2, too few for us to publish a rating.

Who it's for

→Outbound teams that need real Google and Microsoft mailboxes fast
→Senders who match their ESP to the recipient's (Microsoft to Microsoft)
→Agencies running dozens to hundreds of client mailboxes
→Teams on Salesforge or any other sending tool

Not for

A team that needs one or two mailboxes: the minimum is 10 slots · Senders who want dedicated IPs: that is Infraforge · Anyone hoping new mailboxes fix a bad list or bad copy · Buyers who want a free trial

Capabilities

Google Workspace and Microsoft 365 mailboxes at one price per slot
Automatic SPF, DKIM, DMARC and custom tracking domain setup
One Microsoft 365 tenant per domain
Domain purchase or connection of your own domains
Pre-warmed mailboxes and bulk DNS updates
Mailbox names and profile pictures set in bulk
Export to any sending tool, including Salesforge
API, MCP server and CLI access

Pricing

Tier	Price	Credits / mo	Notes
Mailbox slots	$4.5/mo	—	$4.50 per mailbox slot a month billed monthly, minimum 10 slots; the homepage says the unit price runs from $4.50 down to $3.50 with volume. Annual billing gives 2 months free: the calculator shows $113 a month for 25 slots billed monthly and $94 a month billed yearly. Slots are charged whether or not you create the mailbox. Google Workspace and Microsoft 365 at the same price. Domains extra: .com at $14 a year, with a fee to connect a domain you already own. No free trial; monthly plans can be cancelled any time. Checked 2026-11-12.

Our advice

That result was measured at rest, on new mailboxes at low volume; we have not yet seen how any setup holds under full load, so we add mailboxes in steps and re-measure every week. In the same period the Google test inboxes of vendor tools flagged almost everything as spam, Primeforge included, so the test says nothing about Google recipients. Watch the billing: slots are paid whether or not you create the mailbox.

How we run it

We run Primeforge Microsoft 365 mailboxes in production for our own outbound, on an annual plan of 35 slots (about $3.75 a mailbox a month). We picked it in October 2026 after testing six sending setups side by side, three mailboxes each, against Microsoft 365 test inboxes over three days: the Primeforge Microsoft 365 setup put 24 of 24 test emails in the inbox, level with a Microsoft 365 tenant we set up ourselves and a new Google Workspace, while a shared done-for-you mailbox pool put 0 of 24 there. It won on cost per send.

The honest take

Where it breaks

Primeforge gives you clean mailboxes, not a sending reputation: lists, volume and copy still decide placement, and new mailboxes need a ramp. Billing is per slot with a 10-slot minimum, charged even for mailboxes you never create. Public evidence is thin, with 29 G2 reviews, and the vendor's own comparisons are its main source of claims.

The verdict

Primeforge is a cheap, fast way to get real Google Workspace and Microsoft 365 mailboxes for cold email, and the Microsoft side is where it earns its place. Shortlist it if you match your sending provider to your prospects' and need mailboxes in bulk. For pre-warmed mailboxes billed by plan, look at Zapmail; for cheaper shared infrastructure, Mailforge.

Alternatives

Zapmail

Starting price

$39/mo

Starting price

$3/mo

Starting price

$4/mo

—Free plan

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FAQ

How much does Primeforge cost?

Primeforge charges $4.50 per mailbox slot a month on monthly billing, with a minimum of 10 slots, and annual billing gives two months free (about $3.75 a mailbox a month). The homepage says the unit price drops to $3.50 with volume. Domains are extra: a .com costs $14 a year. You pay for every slot you buy, even if you leave some mailboxes uncreated.

Does Primeforge offer Microsoft 365 mailboxes?

Yes. Primeforge sells Google Workspace and Microsoft 365 mailboxes at the same slot price, and puts each domain on its own Microsoft 365 tenant. That matters for ESP matching: sending to Microsoft-hosted prospects from Microsoft mailboxes.

Primeforge vs Mailforge vs Infraforge: which one?

All three come from Salesforge's Forge stack. Primeforge gives you real Google Workspace and Microsoft 365 mailboxes, Mailforge gives cheaper mailboxes on shared infrastructure, and Infraforge gives private infrastructure with dedicated IPs. Salesforge itself recommends combining Primeforge with one of the other two.

What do reviewers say about Primeforge?

Primeforge has 29 reviews on G2, below the 50 reviews or two independent platforms we require before publishing a rating, so we show none. Reviewers mostly mention help with setup.

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