Primeforge
Real Google Workspace and Microsoft 365 mailboxes for outbound teams.
From $4.50/mailbox/mo API
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Bottom line
Google Workspace and Microsoft 365 mailboxes for cold email, from $4.50 per mailbox per month billed yearly. 10-slot minimum.
Stands out for: US-IP Google and Microsoft mailboxes so you can match the ESP your prospects use.
Watch out for: Minimum 10 mailbox slots. No free trial. Yearly billing is the $4.50 rate; monthly is higher.
Overview
Primeforge provisions Google Workspace and Microsoft 365 mailboxes on US IP addresses for cold outreach. It is the Google/Microsoft layer of the Forge stack, beside Mailforge and Infraforge. Mailbox slots are $4.50 per month billed yearly, with a 10-slot minimum. On the calculator, 25 slots cost $94 per month yearly versus $113 per month billed monthly..com domains are $14 per year. Automated DNS, hosting, and the Primeforge API are included. There is no free trial.
Teams pick Primeforge to send from the same ESPs most prospects use. You can bring existing domains by updating nameservers. Slots are capacity, so unused slots still bill. Each Forge product needs its own subscription. Yearly mailbox billing is two months free versus monthly. REST docs use api.primeforge.ai. This is not shared SMTP; these are Google and Microsoft accounts.
Who it's for
Best for
- Teams that want real Google or Microsoft inboxes
- Senders using ESP matching for inbox placement
- Shops automating setup through the Primeforge API
- Buyers already on Salesforge or Mailforge
Not ideal for
- Buyers who need fewer than 10 mailboxes
- Teams that want a free trial before buying slots
Key features
Google Workspace. Official Google Workspace mailbox provisioning for outbound sending.
Microsoft 365. Official Microsoft 365 / Outlook mailbox provisioning for outbound sending.
Pricing
| Plan | Price | What you get |
|---|---|---|
| Mailbox slot, billed yearly | $4.50/slot/mo | 10-slot minimum |
| 25 slots | $94/mo | Billed yearly, $113/mo billed monthly |
| Domain | $14/year | API included, each Forge product is a separate subscription |
Mailbox slots $4.50/month billed yearly, 10-slot minimum. 25 slots are $94/month yearly vs $113/month monthly..com domains $14/year. API included. No free trial. Cancel anytime. Each Forge product is a separate subscription. Confirm current terms on the vendor site.
Checked 19 Sep 2026. Vendors change prices without notice.
Is Primeforge expensive?
Primeforge starts at $4.50/mailbox/mo. We list 36 deliverability tools in total. 4 have a free tier, and those with a public price typically start around $10 a month.
- 1 quote-based
- 4 free tier
- 35 public price
Worked out automatically from every deliverability listing, so it updates as the directory changes.
Pros and cons
Pros
- Real Google and Microsoft mailboxes
- REST API included
- US IP addresses
Cons
- 10 mailbox slot minimum
- No free trial
- Empty slots still bill
Integrations
Salesforge
What's new at Primeforge
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How Primeforge compares
See all Primeforge alternatives, with what each one does differently and a head to head for every pairing.
| Tool | Free tier | From | MCP | API | Compare |
|---|---|---|---|---|---|
| | – | $4.50/mailbox/mo | – | ✓ | |
| | – | $39/mo | – | ✓ | Compare |
| | – | $3/mailbox/mo | – | – | Compare |
| | – | $3.30/inbox/mo | – | ✓ | Compare |
| | – | $3.50/mailbox/mo | ✓ | ✓ | Compare |
$39/mo API
Google and Microsoft mailboxes from $39/mo without a 10-slot Forge minimum.
$3/mailbox/mo
Cheaper shared-IP sibling from $3 per slot.
$3.30/inbox/mo API
Google inboxes at $3.30 with no slot minimum.
$3.50/mailbox/mo MCP API
Google and Microsoft inboxes from $3.50 with an API and MCP.
Your next step
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