Head to head

Cheap Inboxes vs Zapmail

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

Cheap Inboxes

$3.50/mailbox/mo

Google and Microsoft inboxes for cold email, from $3.50 per mailbox per month. REST API and MCP included.

Where Cheap Inboxes fits

  • Agencies automating inbox orders through MCP
  • Teams that want one domain per workspace
  • Senders exporting over OAuth to Instantly or Smartlead
  • Buyers starting under 100 mailboxes

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

DetailCheap InboxesZapmail
Starting price$3.50/mailbox/mo$39/mo
Free tier–No–No
MCP server✓Yes–No
Public API✓Yes✓Yes
Listed underDeliverabilityDeliverability

Where they pull apart

Cheap Inboxes

Stands out: MCP at api.cheapinboxes.com/mcp plus a REST checkout so agents can provision domains and mailboxes.

Watch out: The $3.50 rate is the 1-99 mailbox tier. Volume drops to $2.80 at 1,000-plus. Domains start at $2.50 per year extra.

Not the right fit for

  • Senders who need dedicated SMTP IPs they control
  • Teams that want domains included in the $3.50 rate

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

Cheap Inboxes

  • $3.50/mailbox/mo under 100
  • MCP and REST API included
  • Google and Microsoft same price
  • Domains extra from $2.50/year
  • No published free trial
  • Not dedicated SMTP you control

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

Cheap Inboxes

$3.50/mailbox/mo

1-99 mailboxes $3.50/mailbox/month, 100-249 $3.25, 250-999 $3.00, 1,000+ $2.80. Same price for Google and Microsoft. Domains from $2.50/year. API and MCP included. No free trial stated. Confirm current terms on the vendor site.

Checked 19 Sep 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 19 Sep 2026

Common questions

Is Cheap Inboxes cheaper than Zapmail?
Cheap Inboxes starts lower, at $3.50/mailbox/mo against $39/mo for Zapmail. That is the entry plan on each side, so the real number depends on seats and the tier you land on.
Can you try Cheap Inboxes or Zapmail for free?
Neither carries a free tier on our listing.
Does Cheap Inboxes or Zapmail have an MCP server?
Cheap Inboxes 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 19 Sep 2026. Confirm current terms on the vendor site. Spot an error?