Head to head

MailDeck vs Mailforge

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

MailDeck

$30/domain/mo

Cold email infrastructure with Outlook tenants, Google Workspace, and SMTP. Outlook Normal is $30/domain/mo for 100 inboxes.

Where MailDeck fits

  • Agencies buying Outlook inboxes by the hundred
  • High-volume senders mixing Outlook, Google, and SMTP
  • Teams that want setup and domain replacement included
  • Operators who need many mailboxes per domain

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

At a glance

DetailMailDeckMailforge
Starting price$30/domain/mo$3/mailbox/mo
Free tier–No–No
MCP server–No–No
Public API✓Yes–No
Listed underDeliverability, OutreachDeliverability

Where they pull apart

MailDeck

Stands out: One US Microsoft tenant holds 100 Outlook inboxes, so 1,000 inboxes is 10 domains at the tenant rate.

Watch out: Sale rates sit under a higher regular rate. Google extra mailboxes cost $2.99 to $3.50 each. SMTP is a different stack.

Not the right fit for

  • Buyers who want one mailbox without a 100-inbox tenant
  • Teams that only need a sequencer, not inboxes

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

Pros and cons

MailDeck

  • $30/domain/mo for 100 Outlook inboxes
  • Google, Outlook, and SMTP on one vendor
  • Google plans include API and webhooks
  • Outlook sold in 100-inbox tenants
  • Sale price sits under a higher regular rate
  • No published free trial

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

What each one costs

MailDeck

$30/domain/mo

Outlook Normal is $30/domain/mo for 100 inboxes (regular $45). Premium is $40 (regular $55). Mixed is $35. Google Workspace Starter is $39/mo for 10 slots, Growth $99/mo, Enterprise $299/mo. Private SMTP is $0.50/inbox. Diversified Starter is $99/mo. Extra Google mailboxes are $2.99-$3.50. Confirm current terms on the vendor site.

Checked 19 Sep 2026

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

Common questions

Is MailDeck cheaper than Mailforge?
Mailforge starts lower, at $3/mailbox/mo against $30/domain/mo for MailDeck. That is the entry plan on each side, so the real number depends on seats and the tier you land on.
Can you try MailDeck or Mailforge for free?
Neither carries a free tier on our listing.

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