Mailpool alternatives: SMTP, Google and Microsoft options with published warm-up and API terms

Mailpool is flexible (one inbox to start, three mailbox types, dedicated IPs), but warm-up slots have no published price, the API is on request and fees are non-refundable. These alternatives cover the same ground, each with its own trade-off. We make Outreach2day and list it first.

Create mailboxesBook a call
  • 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

Mailpool and 7 alternatives side by side

Lowest published per-mailbox price, smallest order, mailbox types, warm-up, API and MCP. Each cell links its source.

List prices from Outreach2day's pricing page, Mailforge's pricing page, Maildoso's pricing page, InboxKit's pricing page, Zapmail's pricing page, ScaledMail's pricing page, Infraforge's pricing page and Mailpool's pricing page, checked . Taxes and card fees excluded.

Why each one is a Mailpool alternative

  1. 1. Outreach2day: SMTP with warm-up and sending priced in

    Mailpool SMTP is $3 plus warm-up slots at an unpublished price plus your sequencer; ours is $2.50 with warm-up and a sending engine, from 12 mailboxes. API keys and the MCP server come with every account, no onboarding call.

  2. 2. Mailforge: cheaper shared-IP SMTP at volume

    Like Mailpool SMTP, Mailforge runs on shared IPs, from $3 down to $2 a month and $1.67 on yearly billing at the top tier. Warm-up is Warmforge, a separate subscription.

    Mailforge review

  3. 3. Maildoso: SMTP packs of 300 and 1,000

    $225 for 300 SMTP mailboxes or $499 for 1,000, with a self-serve API and MCP server. Each mailbox sends up to 15 cold emails a day and warm-up is yours to run.

    Maildoso review

  4. 4. InboxKit: Google and Microsoft from one mailbox

    If you used Mailpool for Google or Microsoft: InboxKit sells both at $3 monthly, $2.50 annual, no minimum, with the API open to everyone. Warm-up is $3 a mailbox.

    InboxKit review

  5. 5. Zapmail: Google and Microsoft with warm-up handled

    Zapmail's plans start at $39 for 10 and its FAQ says warm-up is handled; it has a public API on Pro and an MCP server.

    Zapmail review

  6. 6. ScaledMail: the same three types, managed

    Google, Outlook and SMTP in one account like Mailpool, set up and watched by ScaledMail's team in a Slack channel; warm-up runs in your sequencer.

    ScaledMail review

  7. 7. Infraforge: dedicated IPs for SMTP

    Mailpool's dedicated IP is $200 a month with unlimited inboxes; Infraforge puts SMTP mailboxes on dedicated IPs from $4 down to $3 a mailbox, extra IPs $99.

Mailpool itself

Read the full Mailpool review

Choosing

The renewal and warm-up questions

Two Mailpool prices are not on its site: the warm-up slot and the Google renewal rate after the first-year discount. Get both in writing before you build on Mailpool, or pick a vendor that publishes them.

The Mailpool review collects every plan and term with its source.

Choosing by mailbox type

SMTP: Outreach2day, Mailforge, Maildoso, Infraforge. Google and Microsoft: InboxKit, Zapmail. All three types from one vendor: ScaledMail, as Mailpool does.

Outreach2day as a Mailpool alternative

We make Outreach2day and list it first. Where it fits and where it does not.

It 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 use Mailpool's SMTP inboxes and want warm-up priced in
  • You want API keys without an onboarding call, and an MCP server
  • You want campaigns sent from the same tool

It does not fit if

  • You need Google or Microsoft inboxes
  • You want a dedicated IP
  • You need fewer than 12 inboxes

Mailpool alternatives: questions

What is a good Mailpool alternative?

Outreach2day for SMTP with warm-up and sending included, Mailforge or Maildoso for SMTP slots and packs, InboxKit or Zapmail for Google and Microsoft.

Which Mailpool alternatives include warm-up?

Outreach2day includes it. Zapmail says it handles it. InboxKit sells it at $3 a mailbox; the Forge products sell it as Warmforge.

Which alternatives have a self-serve API?

Outreach2day, Maildoso, InboxKit, the Forge products and ScaledMail publish APIs; Zapmail lists API access on Pro.

Is any alternative cheaper than Mailpool's $3 SMTP?

Outreach2day: $2.50 with warm-up and sending included, and from 1,000 mailboxes a volume price below every list price here, quoted on a call. Maildoso lists $0.75 at 300 and $0.49 at 1,000 without warm-up; Mailforge drops below $3 above 100 slots.

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.

Or open the booking page

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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