Mailpool review: SMTP, Google and Microsoft inboxes self-serve, from one inbox

Mailpool lets you start with a single inbox for $3 and mix its own SMTP inboxes, Google Workspace and Microsoft 365 in one account, plus dedicated IPs. Warm-up now exists as paid slots at an unpublished price, the API is on request, and fees are non-refundable.

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  • Warm-up and sending included
  • $2.50 a mailbox, 12 minimum
  • Month-to-month billing

Mailpool at a glance

Price per mailbox
from $2.60 (SMTP, annual billing)
Smallest order
One inbox ($3); Google and Microsoft inboxes carry a one-month commitment
Mailbox types
Google, Microsoft, SMTP
Warm-up
Built-in warm-up on paid slots; 3–4 weeks recommended before campaigns
MCP server
None found on the site or in the help center
Trustpilot
4 / 5 from 4 reviews

Who Mailpool fits

Pick Mailpool if

  • You want SMTP, Google and Microsoft inboxes in one account
  • You want to start with one inbox
  • You want a dedicated IP option at a published price
  • You export to a wide list of sequencers

Look elsewhere if

  • You want warm-up included or priced upfront
  • You want self-serve API keys
  • You want the Google price fixed after year one
  • You may need a refund

What Mailpool is

Mailpool buys domains with an AI name generator, sets DNS and creates inboxes in minutes. Its own SMTP inboxes run on shared, pre-warmed US IPs; Google and Microsoft inboxes run on those providers' IPs; dedicated IPs are a separate line.

Export is wide: native connections to Instantly, Smartlead, ReachInbox, Saleshandy, Reply, Lemlist, EmailBison and PlusVibe among others, plus CSV and SMTP/IMAP for anything else. Monitoring tracks inbox health on 150+ checkpoints and watches domain and IP blacklists.

Mailpool is run by Snowlight Ventures OÜ in Tallinn, Estonia, with Paddle as the merchant of record.

A self-serve platform that buys domains, sets DNS and creates SMTP, Google Workspace and Microsoft 365 inboxes, then exports them to outreach tools source (opens the vendor's page in a new tab) Run by Snowlight Ventures OÜ, Tallinn, Estonia; Paddle is the merchant of record source (opens the vendor's page in a new tab)

Mailpool pricing

Mailpool plans and prices
PlanPriceMailboxesPer mailboxBillingIncludes
Mailpool SMTP$3 a monthper inbox$3.00monthlyShared rotating IPs, domain generator, automatic DNS, live chat source (opens the vendor's page in a new tab)
Mailpool SMTP$2.60 a monthper inbox$2.60annualAdds DNS Shield and domain masking source (opens the vendor's page in a new tab)
Google Workspace$4 a monthper inbox$4.00monthlyProfile picture, automatic DNS, one-month commitment source (opens the vendor's page in a new tab)
Google Workspace$3.40 a monthper inbox$3.40annualFirst-year price; standard renewal rate after 12 months source (opens the vendor's page in a new tab)
Microsoft 365$5 a monthper inbox$5.00monthlyProfile picture, automatic DNS, one-month commitment source (opens the vendor's page in a new tab)
Microsoft 365$4.30 a monthper inbox$4.30annualMicrosoft rotating IPs source (opens the vendor's page in a new tab)
Dedicated IP$200 a monthunlimited inboxes per IPn/amonthly ($170 annual)Up to 100,000 emails a month per IP source (opens the vendor's page in a new tab)

List prices from Mailpool's pricing page, checked . Taxes and card fees excluded.

Monthly: $3 an SMTP inbox, $4 Google, $5 Microsoft. Annual: $2.60, $3.40 and $4.30. The Google and Microsoft solution pages advertise $3.50, which matches neither column, so check the checkout.

The terms make the Google price a first-year discount that moves to a standard renewal rate after 12 months; that rate is not published. Google and Microsoft inboxes also carry a one-month commitment.

A dedicated IP is $200 a month ($170 annual) with unlimited inboxes and up to 100,000 emails a month. Domains are paid once a year at prices not shown on the site.

Mailpool limits, setup and terms

Each line links to the vendor's page it comes from.

Other Mailpool features

Pre-warmed IPs
Mailpool SMTP inboxes send from pre-warmed US IPs source (opens the vendor's page in a new tab)
Monitoring
Inbox health on 150+ checkpoints, domain and IP blacklist monitoring, spam check source (opens the vendor's page in a new tab)
Cancelling
Inboxes are deactivated at the end of the billing cycle source (opens the vendor's page in a new tab)
Scale (vendor's claim)
250K mailboxes created, 45K domains managed source (opens the vendor's page in a new tab)

In detail

Warm-up as paid slots

Mailpool's help center now has a warm-up section: you buy warm-up slots in billing settings and assign inboxes to them. The slot price is not published. Mailpool recommends three to four weeks of warm-up before campaigns, kept running after.

Ask for the slot price before you plan an account around Mailpool: on a large account it can be a line as big as the inboxes, and the site does not show it.

API and refunds

The API covers domains, mailboxes and DNS, but access is on request: Mailpool calls it a premium API for SaaS tools, AI agents and large agencies, and shares docs after an onboarding call. We found no MCP server.

Fees are billed in advance and non-refundable, apart from the EU consumer 14-day withdrawal right. Cancelling stops the next renewal; inboxes are deactivated at the end of the cycle.

Mailpool ratings

Four reviews is too few to read much into. G2 did not load for us.

Mailpool or Outreach2day

We sell cold email mailboxes too. Where our product fits this buyer and where it does not.

Outreach2day fits if

  • You run 1,000+ mailboxes: we quote a volume price below every vendor list price in our comparisons, warm-up and sending included
  • You want warm-up and sending in the $2.50 instead of paid slots and a sequencer
  • You want an API key and an MCP server on every account
  • You run 12 or more SMTP inboxes

Stay with Mailpool if

  • You need Google Workspace or Microsoft 365 inboxes
  • You want a dedicated IP
  • You need 1 to 11 inboxes

Mailpool review: questions

How much does Mailpool cost?

$3 an SMTP inbox, $4 Google Workspace and $5 Microsoft 365 a month; $2.60, $3.40 and $4.30 on annual billing. A dedicated IP is $200 a month.

Does Mailpool include warm-up?

Warm-up is sold as slots in billing settings; the price is not published.

Does Mailpool have an API?

Yes, on request. Mailpool shares the docs after an onboarding call.

Does Mailpool have a minimum?

No. You can start with one inbox for $3; Google and Microsoft inboxes need a one-month commitment.

Does Mailpool give refunds?

No, apart from the EU consumer 14-day withdrawal right.

What is Mailpool's Trustpilot rating?

4.0 out of 5 from 4 reviews when we checked, too few to read much into.

Deliverability call

Talk to our deliverability team

Book a call with the people who run our mailbox infrastructure. We look at your current setup and tell you what to change. Running 1,000+ mailboxes? We also quote a volume price below every vendor list price in our comparisons, warm-up and sending included.

  • Review your domains, DNS records and current inbox placement
  • Size the setup: domains, mailboxes per domain and daily volume per mailbox
  • Plan warm-up and the move from your current provider or sequencer
  • 1,000+ mailboxes: a volume price per mailbox for your setup

Free call

See open times in your time zone and book on this page.

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More on Mailpool

Sources

Each vendor's own pages. Vendors change prices and plans; if something here is out of date, write to support@outreach2day.com and we will fix it.

First cold emails on day 14, full volume on day 21

Add domains, create mailboxes and turn on warm-up. You see every mailbox's warm-up numbers from day one.

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