Head to head

Mailforge vs Primeforge

Same facts, side by side: starting price, free tier, MCP, API and what each one is actually built for.

Mailforge

$3/mailbox/mo

Shared-IP cold email mailboxes from $3 per mailbox per month, billed yearly, with a 10-slot minimum.

Where Mailforge fits

Teams starting shared-IP outbound cheaply
Senders who expect some spam complaints
Buyers who want yearly mailbox billing
Shops already in the Forge stack

Primeforge

$4.50/mailbox/mo

Google Workspace and Microsoft 365 mailboxes for cold email, from $4.50 per mailbox per month billed yearly. 10-slot minimum.

Where Primeforge fits

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

At a glance

Detail	Mailforge	Primeforge
Starting price	$3/mailbox/mo	$4.50/mailbox/mo
Free tier	–No	–No
MCP server	–No	–No
Public API	–No	✓Yes
Listed under	Deliverability	Deliverability

Where they pull apart

Mailforge

Stands out: Automated SPF, DKIM, and DMARC plus mailbox slots you can delete and recreate at no extra cost.

Watch out: Minimum 10 mailbox slots. No free trial. You pay for slots even if some sit empty. Separate from Infraforge and Primeforge.

Not the right fit for

Buyers who need fewer than 10 mailboxes
Teams that want a free trial before buying domains

Primeforge

Stands out: US-IP Google and Microsoft mailboxes so you can match the ESP your prospects use.

Watch out: Minimum 10 mailbox slots. No free trial. Yearly billing is the $4.50 rate; monthly is higher.

Not the right fit for

Buyers who need fewer than 10 mailboxes
Teams that want a free trial before buying slots

Pros and cons

Mailforge

$3/mailbox/mo on yearly billing
Automated DNS on every domain
Cancel anytime, no contract

10 mailbox slot minimum
No free trial
Empty slots still bill

Primeforge

Real Google and Microsoft mailboxes
REST API included
US IP addresses

10 mailbox slot minimum
No free trial
Empty slots still bill

What each one costs

Mailforge

$3/mailbox/mo

Mailbox slots are $3/month billed yearly, 10-slot minimum. Monthly billing costs more (25 slots $75/month monthly vs $60/month yearly, which is two months free)..com domains $14/year. SSL/domain masking $2/domain/month or $6/domain/year. No free trial. Cancel anytime. Confirm current terms on the vendor site.

Checked 19 Sep 2026

Primeforge

$4.50/mailbox/mo

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

Common questions

Is Mailforge cheaper than Primeforge?

Mailforge starts lower, at $3/mailbox/mo against $4.50/mailbox/mo for Primeforge. That is the entry plan on each side, so the real number depends on seats and the tier you land on.

Can you try Mailforge or Primeforge for free?

Neither carries a free tier on our listing.

Not the pair you wanted?

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Editorial listings, never paid rankings. Prices checked 19 Sep 2026. Confirm current terms on the vendor site. Spot an error?