Head to head

Cheap Inboxes vs EmailAstra

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

EmailAstra

$5/inbox/mo

Pre-warmed Google Workspace and Microsoft 365 inboxes at a flat $5 per inbox per month. Minimum 3 inboxes.

Where EmailAstra fits

  • Agencies that want pre-warmed Google or Microsoft inboxes
  • Teams that will not DIY warmup
  • Senders connecting Instantly, Smartlead, or Lemlist
  • Shops that want burned domains replaced at no extra cost

At a glance

DetailCheap InboxesEmailAstra
Starting price$3.50/mailbox/mo$5/inbox/mo
Free tier–No–No
MCP server✓Yes–No
Public API✓Yes–No
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

EmailAstra

Stands out: 21-day warmup, DNS, domains, and unlimited burn replacement sit in the $5 rate.

Watch out: Payments are non-refundable. Minimum order is 3 inboxes. 3 inboxes per.com domain. No free trial.

Not the right fit for

  • Buyers who need a refund window
  • Teams that only want one or two inboxes

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

EmailAstra

  • Flat $5/inbox including warmup
  • Unlimited burn replacement
  • Google and Microsoft admin access
  • Non-refundable payments
  • 3-inbox minimum
  • No free trial

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

EmailAstra

$5/inbox/mo

Flat $5 per inbox per month including domain, DNS, 21-day warmup, monitoring, and unlimited burn replacement. Minimum 3 inboxes. 3 inboxes per.com domain. Payments non-refundable. No free trial. 30-day placement guarantee is not a trial. Confirm current terms on the vendor site.

Checked 19 Sep 2026

Common questions

Is Cheap Inboxes cheaper than EmailAstra?
Cheap Inboxes starts lower, at $3.50/mailbox/mo against $5/inbox/mo for EmailAstra. 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 EmailAstra for free?
Neither carries a free tier on our listing.
Does Cheap Inboxes or EmailAstra have an MCP server?
Cheap Inboxes 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?