Head to head

Premium Inboxes vs Primeforge

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

Done-for-you Google Workspace and Microsoft 365 inboxes for outbound sending, from $3.50 per inbox per month.

Where Premium Inboxes fits

  • Outbound recruiting teams that need real Workspace or M365 boxes
  • Agencies standing up client domains
  • Desks that want DNS and warmup handled
  • Buyers who need a public API on every plan

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

DetailPremium InboxesPrimeforge
Starting price$3.50/mo$4.50/mailbox/mo
Free tier–No–No
MCP server–No–No
Public API–No✓Yes
Listed underDeliverabilityDeliverability

Where they pull apart

Premium Inboxes

Stands out: Official Workspace and M365 inboxes with free replacements and sub-six-hour setup.

Watch out: It supplies the inboxes only. You still need a sequencer to send, and there is no MCP.

Not the right fit for

  • Teams that only need a sequencer, not inboxes
  • Buyers who want MCP

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

Premium Inboxes

  • Official Workspace and M365, not lookalike domains
  • Setup in under six hours
  • Public API on all plans
  • No MCP
  • You still need a sequencer to send

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

Premium Inboxes

$3.50/mo

From $3.50/inbox/mo. Confirm current pricing on the vendor site.

Checked 7 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 Premium Inboxes cheaper than Primeforge?
Premium Inboxes starts lower, at $3.50/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 Premium Inboxes or Primeforge for free?
Neither carries a free tier on our listing.

Not the pair you wanted?

All Premium Inboxes alternatives All Primeforge alternatives Every Deliverability tool

Editorial listings, never paid rankings. Prices checked 7 Sep 2026. Confirm current terms on the vendor site. Spot an error?