Head to head

Infraforge vs Maildoso

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

Maildoso

$75/mo

SMTP mailboxes for cold email, from $75/mo for 30 inboxes. API and MCP on every plan. 30-day money-back.

Where Maildoso fits

  • Agencies that want cheap SMTP at volume
  • Teams automating inbox setup through MCP
  • Senders who will buy or connect their own domains
  • Shops that need self-healing rotating IPs

At a glance

DetailInfraforgeMaildoso
Starting price$4/mailbox/mo$75/mo
Free tier–No–No
MCP server–No✓Yes
Public API✓Yes✓Yes
Listed underDeliverabilityDeliverability

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

Maildoso

Stands out: MCP at mcp.maildoso.com plus REST so assistants can register domains and create mailboxes.

Watch out: Monthly plans skip domains ($12/year each). Cap is 1,000 mailboxes. A 30-day money-back window is not a trial.

Not the right fit for

  • Buyers who need Google or Microsoft inboxes in the $75 pack
  • Senders who want a free trial rather than money-back

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

Maildoso

  • $75/mo for 30 SMTP mailboxes
  • MCP and REST API on every plan
  • 30-day money-back guarantee
  • Domains extra on monthly plans
  • 15 cold emails per mailbox per day
  • No free trial, only money-back

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

Maildoso

$75/mo

Monthly SMTP packs: 30 mailboxes $75/month ($2.50 each), 300 mailboxes $225/month ($0.75), 1,000 mailboxes $499/month ($0.49). API and MCP included. Domains $12/year on monthly plans ($15 from 1 Oct 2026). 15 cold emails per mailbox per day. 30-day money-back is not a trial. Legacy quarterly packs still listed. Confirm current terms on the vendor site.

Checked 19 Sep 2026

Common questions

Is Infraforge cheaper than Maildoso?
Infraforge starts lower, at $4/mailbox/mo against $75/mo for Maildoso. 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 Maildoso for free?
Neither carries a free tier on our listing.
Does Infraforge or Maildoso have an MCP server?
Maildoso ships a first party MCP server, so an AI assistant can work the product directly.

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?