InfrastructureMailboxes, warmup, sequencer

Cold email infrastructure, ready to send in 14 days

Outreach2day sets up SMTP/IMAP mailboxes on your domains with SPF, DKIM and DMARC, warms them up for as long as you keep them and sends your campaigns from its own sequencer, or hands the mailboxes to Instantly, Smartlead, EmailBison and 11 other tools. $2.50 per mailbox a month, warmup and sending included.

Create mailboxesTalk to our deliverability team
  • $2.50 per mailbox a month
  • Minimum 12 mailboxes
  • Month to month, cancel any time

Timeline from order to full volume

From order to full volume

Days

  1. Day 0OrderBuy domains in the app or connect your own; SPF, DKIM, DMARC and a redirect to your site are set automatically
  2. Day 1Mailboxes ready within 24 hoursWarmup starts: 75+ warmup emails per mailbox a day; inbox, spam and bounce rate show per mailbox from the first day
  3. Days 1 to 14Warmup onlyNo cold email yet; draft the campaign and import contacts meanwhile
  4. Day 14Full volumeUp to 25 cold emails per mailbox a day, up to 5 mailboxes per domain, while warmup keeps running

Warmup keeps running after day 14, for as long as you keep the mailbox

teams have used Outreach2day
3,600+
emails sent a day
40M+

Among them

What you get

Everything a cold email setup needs, on one bill

Domains, DNS, mailboxes, warmup and sending are set up in one account. Keep all of it, or send from the sequencer you already pay for.

  • Mailboxes on your own domains

    SMTP/IMAP mailboxes on domains you buy in the app ($13 a year for a .com, registered to you) or already own

    Who owns the domains

  • DNS set up for you

    SPF, DKIM, DMARC, SSL domain masking and a redirect to your website on every sending domain

    Check any domain's records

  • Warmup that keeps running

    25+ warmup emails a day to Google recipients, 25 to Outlook and 25 to other providers, for as long as you keep the mailbox

    How the warmup schedule works

  • Our own sequencer

    Campaigns with follow-ups, send windows and daily caps; sequences stop on a reply; one inbox for the replies from every mailbox

    Send 100,000 cold emails a month

  • Export to the tool you use

    Instantly and Smartlead sync with an API key; a CSV in the import format of 14 tools, EmailBison included; SMTP/IMAP logins for anything else

    Integration docs

  • MCP server and API

    Ask Claude, ChatGPT or Cursor to check domains, quote mailboxes, start warmup and export them; the REST API covers the same mailboxes

    Set it up from an AI assistant

Pre-warmed mailboxes

Pre-warmed mailboxes or new ones that warm up on our infrastructure

Pre-warmed mailboxes: first batch opening soon. Today every Outreach2day mailbox is new, sits on your domain and warms up for 14 days before the first cold email. Pre-warmed stock from other vendors can send from the first day and costs more every month. Reserve yours on /pre-warmed-mailboxes

New mailboxes on Outreach2day

  • $2.50 a mailbox a month, warmup and the sequencer included
  • Full volume from day 14: up to 25 cold emails a mailbox a day
  • Your own domains, with warmup history you can read per mailbox
  • Warmup keeps running after day 14, at no extra cost

Pre-warmed mailboxes from other vendors

  • Send from the first day, at a low volume and with a ramp
  • About twice the same vendor's fresh mailbox at Primeforge, Zapmail and Litemail
  • Domains picked from the vendor's stock; warmup history rarely shown per mailbox
  • A sequencer is a separate subscription at every vendor in our table

Pre-warmed list prices

Per mailbox a month

Pre-warmed mailbox list prices per mailbox a month, checked 15 Oct 2026
Outreach2dayNew mailbox, full volume from day 14$2.50
PrimeforgeGoogle or Microsoft, at least 12 mailboxes$9.00
Zapmail3-pack after the first month; $6 in the 30-pack$8.00
Litemail5-mailbox Starter; $5.97 in the 30-pack$7.80
InfraforgeSMTP slot plus $14 per pre-warmed domain$4.00

Pre-warmed is worth its premium when a campaign has to start this week. If you can plan two weeks ahead, new mailboxes cost less from the first month on. What pre-warmed sellers include, and the checks before you buy

Our data, September 2026

The sending server decides how warmup goes

Across 34,977 mailboxes on our infrastructure, the same warmup gave a mean Google score of 91 on one sending server and 33 on another. That is why every mailbox shows its own warmup numbers from the first day, and why we watch the servers behind them.

Warmup scores by sending server, 7 days to 22 September 2026

ServerMailboxesGoogleOutlook
Server A26,63090.898.6
Server B8,34733.298.0

On a healthy server, new mailboxes went from a Google score of 57 to 85 in two days. After that server degraded, the same mailboxes stayed between 63 and 75 for more than a week, and more days of warmup did not move them.

How we measured. Google and Outlook scores from the warmup network, 0 to 100 (a vendor metric for warmup emails; it does not measure cold placement). Table: 34,977 SMTP/IMAP mailboxes in 30 workspaces. Chart: about 580 mailboxes on one server. Full data and method

Pricing

$2.50 per mailbox a month

One price per mailbox. Pick how many mailboxes you need, from 12, and pay for exactly that many.

Full pricing

× $2.50 / month

121,000+
Cold emails a month
Price per mailbox
$2.50 a month
Create 100 mailboxes

550 cold emails per mailbox a month.

Every mailbox includes

  • Warmup
  • Our own sequencer
  • One inbox for all replies
  • Mailbox analytics
  • Automated SPF, DKIM and DMARC
  • SSL domain masking
  • Spam checker
  • API and webhooks
  • MCP server
  • Workspaces for clients and teams
  • Live support

Domains are bought separately in the app, or bring your own.

Enterprise support for large teams

A shared Slack channel and a dedicated account team, for companies running hundreds or thousands of mailboxes

Talk to us

Compare

Outreach2day compared with Mailforge, Infraforge, Primeforge, Zapmail and Litemail

What each vendor sells for cold email infrastructure, from their own pricing, product and help pages; sources are under the table. A green dot marks warmup or sending that comes with the mailbox. From 1,000 mailboxes we quote a volume price below every list price in this table, on a call.

  • Outreach2dayMailboxes, warmup and sequencer
    Mailbox type
    SMTP/IMAP on your domains
    Price per mailbox
    $2.50 a month, warmup and sequencer included
    Smallest order
    12 mailboxes, $30 a month
    Billing
    Monthly, cancel any time
    Warmup
    Included for the life of the mailbox
    Sequencer
    Included
    Pre-warmed
    First batch opening soon (waitlist)
    Export
    Instantly and Smartlead by API key; CSV for 14 tools incl. EmailBison
    API and MCP
    REST API and MCP server
    Setup time
    24 hours; full volume from day 14
  • MailforgeShared-IP SMTP mailboxes
    Mailbox type
    SMTP/IMAP on shared IPs
    Price per mailbox
    $3 a month
    Smallest order
    10 slots, $30 a month
    Billing
    Monthly or yearly
    Warmup
    Free warmup in Warmforge, a separate product
    Sequencer
    Not included; Salesforge is separate
    Pre-warmed
    $14 domain with 2 mailboxes, at least 4 domains
    Export
    Salesforge or another sending tool
    API and MCP
    API, MCP and CLI
    Setup time
    5 to 10 minutes
    Outreach2day vs Mailforge
  • InfraforgeDedicated-IP SMTP mailboxes
    Mailbox type
    SMTP/IMAP on dedicated IPs
    Price per mailbox
    $4 a month billed quarterly; $3.32 billed yearly
    Smallest order
    10 slots, $120 a quarter
    Billing
    Quarterly or yearly
    Warmup
    Automated warmup, per the home page
    Sequencer
    Not included; Salesforge is separate
    Pre-warmed
    $14 domain with 2 mailboxes, at least 4 domains
    Export
    Salesforge or another sending tool
    API and MCP
    API, MCP and CLI
    Setup time
    5 minutes
    Mailforge vs Infraforge
  • PrimeforgeGoogle and Microsoft mailboxes
    Mailbox type
    Google Workspace and Microsoft 365
    Price per mailbox
    $4.50 a month; $3.76 billed yearly
    Smallest order
    10 slots, $45 a month
    Billing
    Monthly or yearly
    Warmup
    Warmforge, a separate product
    Sequencer
    Not included; Salesforge is separate
    Pre-warmed
    $9 a mailbox a month, at least 4 domains × 3
    Export
    Salesforge, Instantly, Smartlead, EmailBison and more; CSV
    API and MCP
    API, MCP and CLI
    Setup time
    30 minutes
    Primeforge review
  • ZapmailGoogle and Microsoft mailboxes
    Mailbox type
    Google Workspace and Microsoft 365
    Price per mailbox
    $39 for 10 ($3.90 each); extra $3.00 to $3.50
    Smallest order
    10 mailboxes, $39 a month
    Billing
    Monthly or yearly
    Warmup
    Not published for standard plans
    Sequencer
    Not included
    Pre-warmed
    3 for $39 the first month, then $24; 12+ weeks warmed
    Export
    22 sequencers over OAuth, Instantly and Smartlead included
    API and MCP
    API on Pro; hosted MCP server
    Setup time
    5 to 10 minutes
    Outreach2day vs Zapmail
  • LitemailGoogle and Microsoft mailboxes
    Mailbox type
    Google Workspace and Microsoft 365
    Price per mailbox
    $37 for 10 ($3.70 each); extra $3.00 to $3.50
    Smallest order
    10 mailboxes, $37 a month
    Billing
    Monthly
    Warmup
    Not published for fresh plans
    Sequencer
    Not included
    Pre-warmed
    5 for $39 a month; warmed 4+ weeks
    Export
    Instantly, Smartlead, Pipl.ai, Prospi.io
    API and MCP
    API on Pro and Scale; no MCP listed
    Setup time
    5 minutes; pre-warmed in 12 hours

Verdict, vendor by vendor

  • Outreach2day vs Mailforge

    Warmup and a sequencer come in our $2.50 mailbox, billed monthly. On Mailforge the mailbox is $3 on monthly billing, warmup is Warmforge and sending is Salesforge, two more products to set up.

    Mailforge fits a team already on Salesforge that wants pre-warmed domains from the first day.

  • Outreach2day vs Infraforge

    $2.50 a month with our own sequencer, against $4 a mailbox billed quarterly with sending bought separately. You can stop after any month.

    Infraforge fits a team that wants dedicated IPs and pays per quarter or year.

  • Outreach2day vs Primeforge

    For SMTP/IMAP sending, $2.50 with warmup and a sequencer against $4.50 for a Google or Microsoft seat before any sending tool.

    Primeforge fits when your sequencer or client needs Google Workspace or Microsoft 365 seats, or pre-warmed ones at $9 a month.

  • Outreach2day vs Zapmail

    From 12 mailboxes at $2.50 each with warmup and our sequencer; Zapmail's Starter is $39 for 10 mailboxes with sending left to another tool.

    Zapmail fits when you need Google or Microsoft mailboxes, OAuth export to 22 tools or pre-warmed packs.

  • Outreach2day vs Litemail

    $2.50 with warmup on every mailbox and a sequencer; Litemail's fresh Google and Microsoft mailboxes start at $3.70, and its pricing lists no warmup for them.

    Litemail fits when you need pre-warmed Google or Microsoft inboxes this week, from $39 for five.

  • 1,000+ mailboxes

    We quote a per-mailbox price below every list price in this table, warmup and sending included.

    Get a volume quote on a call
Create mailboxesTalk to our deliverability team
Sources, checked 15 Oct 2026

Mailbox type

SMTP/IMAP, Google Workspace or Microsoft 365

Cold email vendors sell three kinds of mailbox. Outreach2day sells the first; if your sequencer or client needs the other two, the vendors that sell them are listed with each.

  • SMTP/IMAP on your domains

    Outreach2day

    Mailboxes built for cold email, with warmup and sending in the $2.50 price. Works with our sequencer and any tool that takes SMTP/IMAP

  • Google Workspace

    Primeforge, Zapmail, Instantly, Smartlead

    Sends through Google's servers; a seat per mailbox, about $3 to $4.50 a month at Primeforge, Zapmail and Litemail. Pick it if your sequencer or client asks for Google accounts

  • Microsoft 365

    Primeforge, Zapmail

    Sends through Microsoft's servers, usually one tenant per domain. Pick it if your sequencer or client asks for Microsoft accounts

Choosing between them: Google Workspace alternatives for cold email and the buyer's checklist for cold email mailboxes

Integrations

Keep the sequencer you already use

Send from our mailboxes through the tool you use now. Warmup and analytics keep running on our side.

Automatic sync

Connected with an API key

Paste your Instantly or Smartlead API key once. New mailboxes appear in your Instantly or Smartlead workspace, and we reconnect them if they disconnect.

Any other tool

SMTP/IMAP logins or our API

Any tool that takes SMTP/IMAP works: every CSV includes the logins, or pull them from the API

GET public.outreach2day.com/mailboxes
CSV export

A CSV in the import format of 14 tools

Pick your tool, download the file and upload it there. The columns match what that tool expects.

Setup per tool, with fields and settings: integration docs. Logos are trademarks of their owners.

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, warmup 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 warmup 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

Questions

Direct answers about cold email infrastructure: price, timing, mailbox types and exports. Ask anything else in the box at the bottom.

Or talk to the team

Read next

Guides on cold email infrastructure

Full volume from day 14: 25 cold emails a mailbox a day

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

Book a call