Head to head

Infraforge vs MailDeck

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

Infraforge

$4/mailbox/mo

Private cold-email infrastructure from $4 per mailbox per month, billed yearly, with a 10-slot minimum and a REST API.

Where Infraforge fits

  • Agencies that want private IPs they control
  • Teams automating mailbox setup through the API
  • Senders who follow strict deliverability rules
  • Shops mixing Forge products for ESP diversity

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

At a glance

DetailInfraforgeMailDeck
Starting price$4/mailbox/mo$30/domain/mo
Free tier–No–No
MCP server–No–No
Public API✓Yes✓Yes
Listed underDeliverabilityDeliverability, Outreach

Where they pull apart

Infraforge

Stands out: Dedicated servers plus a public REST API at api.infraforge.ai for domains, mailboxes, and sequencer export.

Watch out: Minimum 10 slots. Extra IPs are $99 per month billed quarterly. No free trial. Separate from Mailforge.

Not the right fit for

  • Buyers who need fewer than 10 mailboxes
  • Teams that expect a high spam-complaint volume

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

Pros and cons

Infraforge

  • $4/mailbox/mo on yearly billing
  • REST API included
  • Dedicated private servers
  • 10 mailbox slot minimum
  • Extra IPs $99/mo quarterly
  • No free trial

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

What each one costs

Infraforge

$4/mailbox/mo

Mailbox slots $4/month billed yearly, 10-slot minimum. 25 slots are $83/month yearly vs $100/month quarterly. Extra IPs $99/month billed quarterly. Masterbox $7/workspace/month annual or $9 quarterly..com domains $14/year. SSL/masking $2/domain/month quarterly or $6/domain/year. API included. No free trial. Confirm current terms on the vendor site.

Checked 19 Sep 2026

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

Common questions

Is Infraforge cheaper than MailDeck?
Infraforge starts lower, at $4/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 Infraforge or MailDeck 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?