Compare/Head to head

Maildoso vs Zapmail

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

Starting price

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

Zapmail

$39/mo

Google Workspace and Microsoft 365 mailboxes for cold email. Starter is $39/mo for 10 Google mailboxes.

Where Zapmail fits

Freelancers starting with 10 Google inboxes
Agencies that want pre-warmed Workspace accounts
Teams exporting to Instantly or Smartlead
Senders who need one domain per workspace

At a glance

Detail	Maildoso	Zapmail
Starting price	$75/mo	$39/mo
Free tier	–No	–No
MCP server	✓Yes	–No
Public API	✓Yes	✓Yes
Listed under	Deliverability	Deliverability

Where they pull apart

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

Zapmail

Stands out: Pre-warmed US/EU Google and Microsoft mailboxes with automated DNS and OAuth export to sequencers.

Watch out: API access starts on Pro at $299/mo. Extra Google mailboxes cost $3.50 each on Starter.

Not the right fit for

Buyers who need API access on Starter
Teams that want dedicated SMTP IPs they control

Pros and cons

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

Zapmail

Starter $39/mo for 10 mailboxes
Pre-warmed Google and Microsoft
OAuth export to major sequencers

API only on Pro at $299/mo
No published free trial
Extra Starter mailboxes are $3.50

What each one costs

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 4 Nov 2026

Zapmail

$39/mo

Starter is $39/month for 10 Google mailboxes, extra mailboxes $3.50. Growth is $99/month for 30, extra $3.25. Pro is $299/month for 100, extra $3.00, and includes API access. All plans billed monthly. Pre-warmed Google and Microsoft accounts. No free trial. Confirm current terms on the vendor site.

Checked 4 Nov 2026

Common questions

Is Maildoso cheaper than Zapmail?

Zapmail starts lower, at $39/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 Maildoso or Zapmail for free?

Neither carries a free tier on our listing.

Does Maildoso or Zapmail have an MCP server?

Maildoso ships a first party MCP server, so an AI assistant can work the product directly.

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Editorial listings, never paid rankings. Prices checked 4 Nov 2026. Confirm current terms on the vendor site. Spot an error?