Head to head

Inframail vs Maildoso

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

Inframail

$147/mo

Microsoft-backed cold email inboxes on a flat $147/mo unlimited plan. No per-mailbox fee.

Where Inframail fits

  • Agencies that want unlimited Microsoft inboxes
  • Teams tired of per-mailbox Google bills
  • Senders who will bring or buy domains
  • Shops connecting inboxes to Instantly or Smartlead

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

DetailInframailMaildoso
Starting price$147/mo$75/mo
Free tier–No–No
MCP server–No✓Yes
Public API–No✓Yes
Listed underDeliverabilityDeliverability

Where they pull apart

Inframail

Stands out: Unlimited inboxes on your domains for a flat monthly fee, with SPF, DKIM, and DMARC set automatically.

Watch out: Microsoft-backed infrastructure, not Google Workspace. You still need a sequencer such as Instantly or Smartlead to send.

Not the right fit for

  • Buyers who need Google Workspace inboxes in the $147 plan
  • Teams that want a free trial before paying

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

Inframail

  • $147/mo unlimited Microsoft inboxes
  • Automated SPF, DKIM, and DMARC
  • No per-email sending fee
  • Core plan is Microsoft, not Google
  • No published free trial
  • You still pay for a sequencer

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

Inframail

$147/mo

Core Inframail plan is $147/month with unlimited Microsoft-backed inboxes and no per-email fee. Separate Google Workspace and Microsoft 365 lines are listed at $600/month with a $3 per-inbox rate. Done-for-you campaign setup is $3,497 once plus $499/month. Money-back is not a 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 Inframail cheaper than Maildoso?
Maildoso starts lower, at $75/mo against $147/mo for Inframail. That is the entry plan on each side, so the real number depends on seats and the tier you land on.
Can you try Inframail or Maildoso for free?
Neither carries a free tier on our listing.
Does Inframail 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?