Compare/Head to head

Icemail vs InboxKit

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

Starting price

Icemail

$2.50/mailbox/mo

Bulk Google Workspace and Microsoft 365 mailboxes for cold email, with SPF, DKIM and DMARC set up for you and one-click export to Instantly, Smartlead or ReachInbox. From $2.50 per mailbox a month with no subscription.

Where Icemail fits

  • Agency recruiters running cold email to hiring managers at volume
  • Teams already sending from Instantly or Smartlead
  • Buyers who want Google and Microsoft inboxes from one dashboard

InboxKit

$2.50/mailbox/mo

US-IP Google Workspace and Microsoft 365 mailboxes for cold email, with SPF, DKIM and DMARC set up for you and export to 24+ sequencers. One flat rate per mailbox: $3.00 a month, or $2.50 on annual billing, with no plan or minimum.

Where InboxKit fits

  • Agency recruiters sending cold email to hiring managers at volume
  • Teams already sequencing in Instantly, Smartlead, Lemlist or Apollo
  • Teams that want to automate mailbox setup through an API

At a glance

DetailIcemailInboxKit
Starting price$2.50/mailbox/mo$2.50/mailbox/mo
Free tier–No–No
MCP server–No–No
Public API✓Yes✓Yes
Listed underDeliverabilityDeliverability

Where they pull apart

Icemail

Stands out: Each domain gets its own admin workspace, so one banned domain does not drag the others down, and banned mailboxes are replaced free. Mailboxes arrive pre-warmed, replies land in a unified inbox, and an AI domain finder suggests domains to buy.

Watch out: The $2.50 price is labelled a limited deal, with $3.50 as the listed rate, so budget for the higher figure. Deliverability claims such as 99.2% inbox placement are the vendor's own. The Azure plan allows about 5 cold emails a day per mailbox, so volume comes from mailbox count, not from each inbox.

Not the right fit for

  • Recruiters sending a few dozen emails a day from their main inbox
  • Teams that want the sequencer and the inboxes in one product

InboxKit

Stands out: Each domain gets its own isolated admin panel, so one damaged domain does not drag the others down. A full REST API with webhooks lets agencies provision mailboxes automatically when a new client signs, and an Azure option covers up to 100 mailboxes for $30 a month.

Watch out: Warmup is not included: it is a $3 per mailbox a month add-on, more than the annual mailbox price itself. The $2.50 rate needs annual billing, and there is no free trial, though you can start with a single mailbox. The 90%+ inbox placement figure is the vendor's own claim.

Not the right fit for

  • Recruiters sending a handful of emails a day from their own inbox
  • Teams that want warmup and sending included in one price

Pros and cons

Icemail

  • Low per mailbox price with no contract
  • Free replacement of banned mailboxes
  • Google, Microsoft and private SMTP options in one place
  • Headline price is a limited deal
  • No sequencer of its own
  • Deliverability figures are vendor claims

InboxKit

  • Same price for Google and Microsoft mailboxes
  • No plans, slots or minimums
  • Full API with webhooks
  • Warmup costs extra
  • No free trial
  • No sequencer of its own

What each one costs

Icemail

$2.50/mailbox/mo

Icemail has no subscription; you pay per mailbox or per domain. Google Workspace and Microsoft 365 mailboxes are $2.50 per mailbox a month on a deal the vendor marks as limited, against a listed $3.50. Microsoft 365 on Azure is $29 per domain a month for 100 mailboxes, and a private IMAP/SMTP server is $49 per domain a month for 10 mailboxes with a dedicated IP. Signing up is free. Confirm current terms on the vendor site.

Checked 30 Sep 2026

InboxKit

$2.50/mailbox/mo

InboxKit charges one flat rate per mailbox, with no plans, no minimum and no base fee. Google Workspace and Microsoft 365 mailboxes cost the same: $3.00 a month on monthly billing, $2.70 on quarterly and $2.50 on annual. Azure is billed per tenant at $30 a month for up to 100 mailboxes. Isolated warmup is an add-on at $3 per mailbox a month, and the InfraGuard monitoring add-on has its first month free. You pay from a prepaid wallet. Confirm current terms on the vendor site.

Checked 30 Sep 2026

Common questions

Is Icemail cheaper than InboxKit?
Icemail starts lower, at $2.50/mailbox/mo against $2.50/mailbox/mo for InboxKit. That is the entry plan on each side, so the real number depends on seats and the tier you land on.
Can you try Icemail or InboxKit for free?
Neither carries a free tier on our listing.

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Editorial listings, never paid rankings. Prices checked 30 Sep 2026. Confirm current terms on the vendor site. Spot an error?