Mailforge alternatives: one bill for what takes four Forge products, $147 a month less at 100 mailboxes

Mailforge sells SMTP mailbox slots from $3 a month. Warmup is Warmforge, sending is Salesforge, SSL and domain masking cost $2 per domain a month, and Google or Microsoft mailboxes are a fourth product, Primeforge. Outreach2day puts the mailbox, warmup, sending and masking in $2.50. At 100 mailboxes: $250 against $397 for Mailforge slots plus an Instantly plan. We make Outreach2day and rank it first.

Create mailboxesBook a call
  • Warmup and sending included
  • $2.50 a mailbox, 12 minimum
  • Month-to-month billing

Full setup · 100 mailboxes · 55,000 emails a month

$147less a month with Outreach2day, $1,764 a year

Outreach2day$250 / mo
Mailforge + Instantly$397 / mo

Mailboxes, warmup and a sequencer at list prices, monthly billing. Line items in the cost table below.

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

Among them

  • SalesSourcers
  • Vivid
  • OptiQ.AI
  • SLSBMB
  • Outreacher
  • Outpush

Why Outreach2day tops this list

  • Masking in the mailbox price

    Mailforge charges $2 per domain a month for SSL and domain masking, and recommends 2–3 mailboxes per domain, so the fee grows with every domain. Our masking and link protection are included.

  • Fewer domains for the same mailboxes

    We put up to 5 mailboxes on a domain. For 100 mailboxes that is 20 domains, against 34 to 50 at Mailforge's 2–3 per domain.

  • Warmup with any sender

    Mailforge's warmup is free only with a Salesforge subscription. Ours runs on every mailbox, whether you send from our own sequencer, Instantly or Smartlead.

Mailforge fits teams already on Salesforge, which includes Warmforge warmup. Ours are SMTP/IMAP mailboxes with warmup and sending in the $2.50.

7 Mailforge alternatives, ranked

Options outside the cost table below show their full setup at 100 mailboxes here.

  1. 1. Outreach2day: the mailbox, warmup, sending and masking in one price

    The same kind of mailbox as Mailforge (SMTP/IMAP on your domains), with the three things Mailforge sells separately already inside: warmup, a sequencer with a reply inbox, and SSL domain masking. Domains are $13 a year for a .com and $5 for a .info, registered to you. source

    Warmup includedSending included

  2. 2. Maildoso: SMTP mailboxes at $2.50 when you run warmup elsewhere

    The other SMTP seller priced near Mailforge's large-volume rate: $2.50 per mailbox from a 30-mailbox plan. Like Mailforge, no warmup or sender; unlike Mailforge, a cap of 15 cold emails per mailbox a day. source (opens the vendor's page in a new tab)

    Warmup not includedSending not included

  3. 3. Zapmail: Google and Microsoft mailboxes, a Primeforge alternative

    If you were about to add Primeforge for Google or Microsoft mailboxes, Zapmail sells both from $39 for 10, handles warmup per its FAQ, and exports to 50+ outreach tools. source (opens the vendor's page in a new tab)

    Warmup includedSending not included

  4. 4. InboxKit: Google and Microsoft mailboxes with no minimum

    A flat $3 per Google or Microsoft mailbox on monthly billing, no 10-slot minimum. Warmup is a $3 add-on and there is no sequencer. source (opens the vendor's page in a new tab)

    Warmup extra or partialSending not includedFull setup at 100 mailboxes: $397 / mo

  5. 5. Premium Inboxes: done-for-you inboxes uploaded to your sender

    Google and Microsoft inboxes set up by hand and uploaded to Instantly, Smartlead, Apollo, Lemlist, Reply.io or Bison. $3.50 per inbox under 250. source (opens the vendor's page in a new tab)

    Warmup extra or partialSending not includedFull setup at 100 mailboxes: $447 / mo

  6. 6. Instantly: replacing Salesforge and Mailforge with one vendor

    Instantly is a sequencer with warmup in every plan that also sells mailboxes: AirMail SMTP inboxes at $4 and Google accounts at $5 a month. Those accounts stay inside Instantly. source (opens the vendor's page in a new tab)

    Warmup includedSending extra or partial

  7. 7. Smartlead: a sequencer that resells SMTP and Google mailboxes

    Smartlead includes warmup in every plan and resells mailboxes as SmartSenders: SMTP from Mailreef at $3.99 with a 75-mailbox minimum, Google or Outlook at $4.50. source (opens the vendor's page in a new tab)

    Warmup includedSending extra or partialFull setup at 100 mailboxes: $544 / mo

Mailforge and more options side by side

Other SMTP and flat-rate vendors next to Mailforge: lowest published per-mailbox price, smallest order, warmup, API and MCP, from their own pages in October 2026.

Outreach2day fits if

  • You run 1,000+ mailboxes: we quote a volume price below every vendor list price in our comparisons, warmup and sending included
  • You want warmup and sending in one $2.50 bill instead of Mailforge plus Warmforge plus Salesforge
  • You want to cancel without a 7-day chat notice
  • You run 12 to a few hundred mailboxes

Outreach2day does not fit if

  • You run thousands of mailboxes and only need the cheapest SMTP slot
  • You already use Salesforge as your sequencer
  • You want dedicated IPs (Infraforge, Inframail or Mailreef)

Mailforge: pricing, limits and who it fits

From Mailforge's own pages, read .

Pricing model
Per slot, at least 10 slots, paid whether used or not: $3 a month for the base 10 and up to 100 add-on slots, stepping down to $2.00 above 1,000 add-on slots. Yearly billing is $30 per slot.source (opens the vendor's page in a new tab)
Add-ons
.com domains $14 a year. SSL and domain masking $2 per domain a month, or $6 a year.source (opens the vendor's page in a new tab)
Sending limits
Mailforge recommends 30 emails per mailbox a day (at most 100) and 2–3 mailboxes per domain.source (opens the vendor's page in a new tab)
Mailbox type
SMTP on a shared IP pool. Google and Microsoft mailboxes are a separate product, Primeforge; dedicated servers are Infraforge.source (opens the vendor's page in a new tab)
Warmup
A separate product, Warmforge: $12 a slot a month for 1–10 slots, down to $6 above 1,000. Salesforge users get unlimited Warmforge slots at no extra cost.source (opens the vendor's page in a new tab)
Trial
No free trial and no contract.source (opens the vendor's page in a new tab)

What Mailforge is good at

Pick Mailforge if

  • You already send with Salesforge, which includes Warmforge warmup, and want shared-IP SMTP mailboxes in the same account

What the full setup costs each month

Mailboxes, warmup and a sequencer at the same email volume, every line item listed. Set your volume.

Outreach2day, mailboxes/ moWarmup, sending, the inbox and analytics included.
Create 100 mailboxes

The same volume elsewhere

  • Outreach2day
    Mailboxes with warmup and a sequencer included
  • Mailforge more
    slots: $3 a month for the first 10 and up to 100 add-on slots, then $0.10 less per 100 add-on slots, $2 above 1,000; sequencer with warmup: Instantly Growth $47 (5,000 emails), Hypergrowth $97 (125,000 emails), Hypergrowth + add-on $184 (250,000 emails), Light Speed $358 (500,000 emails) a month

  • Outreach2dayMailboxes + warmup + sequencer

    25 mailboxes
    $62.50 / mo25 mailboxes × $2.50, warmup and a sequencer included $62.50
    100 mailboxes
    $250 / mo100 mailboxes × $2.50, warmup and a sequencer included $250
    400 mailboxes
    $1,000 / mo400 mailboxes × $2.50, warmup and a sequencer included $1,000

  • MaildosoMailboxes

    25 mailboxes
    $202 / mo42 Maildoso mailboxes × $2.50 (the number needed at 15 a day) $105 + Instantly Hypergrowth $97
    100 mailboxes
    $514.50 / mo167 Maildoso mailboxes × $2.50 (the number needed at 15 a day) $417.50 + Instantly Hypergrowth $97
    400 mailboxes
    $1,851.50 / mo667 Maildoso mailboxes × $2.50 (the number needed at 15 a day) $1,667.50 + Instantly Hypergrowth + add-on $184

  • ZapmailMailboxes

    25 mailboxes
    $188.50 / moZapmail Starter + 15 extra mailboxes $91.50 + Instantly Hypergrowth $97
    100 mailboxes
    $396 / moZapmail Pro (100 mailboxes) $299 + Instantly Hypergrowth $97
    400 mailboxes
    $1,383 / moZapmail Pro + 300 extra mailboxes $1,199 + Instantly Hypergrowth + add-on $184

  • InstantlySequencer + mailboxes

    25 mailboxes
    $222 / mo25 Google accounts × $5 $125 + Instantly Hypergrowth $97
    100 mailboxes
    $597 / mo100 Google accounts × $5 $500 + Instantly Hypergrowth $97
    400 mailboxes
    $2,184 / mo400 Google accounts × $5 $2,000 + Instantly Hypergrowth + add-on $184

  • MailforgeMailboxes

    25 mailboxes
    $172 / moMailforge 25 slots $75 + Instantly Hypergrowth $97
    100 mailboxes
    $397 / moMailforge 100 slots $300 + Instantly Hypergrowth $97
    400 mailboxes
    $1,267 / moMailforge 400 slots $1,083 + Instantly Hypergrowth + add-on $184

How we count: 550 cold emails per mailbox a month (25 a day on 22 working days), the same for every vendor. List prices on monthly billing, in USD, excluding domains, taxes and discounts. A vendor that does not sell sending gets the cheapest Instantly plan that covers the volume.

Included in the $2.50

Everything a cold email setup needs, in one mailbox price

One subscription at $2.50 a mailbox, from 12 mailboxes ($30 a month), everything included

  • Sequencer included

    Warmup and a sequencer

    • Warmup for the life of every mailbox
    • Campaigns, sequences, schedules and follow-ups
    • One inbox for replies from all mailboxes
  • Per mailbox

    Analytics that show which mailboxes still land

    • Warmup inbox, spam and bounce rate for every mailbox
    • Sends by recipient provider
    • Google and Outlook placement tests
  • Deliverability

    SSL domain masking and link protection

    SSL domain masking on sending domains and automatic link replacement in emails; SPF, DKIM, DMARC and redirect to your site set up automatically

  • REST API

    An API on every account

    Script domains, DNS and warmup, or pull mailbox data into your own tools

    curl · public.outreach2day.com
    # OUTREACH2DAY_API_KEY: a key from app → API keyscurl "https://public.outreach2day.com/warmup/mailboxes?workspaceId=123" \  -H "Authorization: Bearer $OUTREACH2DAY_API_KEY"
  • MCP server

    Run it from Claude, Cursor or Codex

    Your AI assistant checks domains, quotes mailboxes and sets up DNS, warmup and campaigns. Add the server URL to Claude, ChatGPT, Cursor or Codex and sign in with your Outreach2day account; turn on Prepare orders at sign-in, then approve and pay on Stripe

    Server URL
    https://public.outreach2day.com/mcp
    Or install for every client · macOS / Linux
    curl -fsSL https://outreach2day.com/install | sh
    Setup for each client
  • 14 tools

    Keep the sequencer you already use

    Instantly and Smartlead sync by API key; 12 more get a CSV in their own import format. Setup per tool

    • Instantly
    • Smartlead
    • SalesHandy
    • Reply.io
    • Apollo
    • Snov.io
    • Mailshake
    • ReachInbox
    • PlusVibe
    • Luna
    • Nureply
    • Coldy
    • MailToaster
    • EmailBison
  • Hundreds of mailboxes

    Enterprise support

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

    Talk to us

The details

Separate the Mailforge slots from the Forge subscriptions

Write down the active slots, domains and Forge subscriptions before comparing a replacement. A purchased slot is capacity for a mailbox; it is still a billed slot while empty. Count the slots on the invoice as well as the addresses connected to campaigns, then decide how many replacements your daily sending volume needs.

If Salesforge remains your sender, price only the replacement infrastructure and any masking you still require. If you also replace Salesforge, include the new sequencer's send allowance and reply handling. Moving to Google or Microsoft is another decision: those accounts come from Primeforge inside the Forge family, so compare them with Zapmail or InboxKit separately from SMTP slots. This prevents a quote for one mailbox type from standing in for the whole existing setup.

What the Forge setup costs at 100 mailboxes

The mailbox slots and add-ons are covered in Mailforge pricing 2026; Outreach2day vs Mailforge compares the two setups.

Mailforge slots cost $3 a month for the base 10 and up to 100 add-on slots, then step down by $0.10 per 100 add-on slots to $2 above 1,000. 100 slots are $300 a month.

Sending 25 cold emails per mailbox a day on 22 working days is 55,000 emails a month. Salesforge Growth covers 50,000 for $96 a month; one more step of 50,000 emails costs $86, per its pricing calculator. Warmforge warmup comes with Salesforge at no extra cost.

So the Forge setup is $300 + $96 + $86 = $482 a month before masking. We price Mailforge with Instantly on the rest of this page, which is cheaper: $397. Ours is $250. At 25 mailboxes: $172 against $62.50; at 400, $1,267 against $1,000.

Domains, masking and daily volume

Mailforge recommends 30 emails per mailbox a day, at most 100, and 2–3 mailboxes per domain. We recommend up to 25 cold emails per mailbox a day and up to 5 mailboxes per domain.

At 100 mailboxes, 2–3 per domain means 34 to 50 domains: $476 to $700 a year at Mailforge's $14 per .com, plus $68 to $100 a month for masking at $2 per domain. At 5 per domain we need 20 domains: $260 a year as .com, masking included.

Which alternative fits which Mailforge user

On Salesforge and happy with it: keep Salesforge and replace only the slots. Any SMTP/IMAP mailbox connects, ours included, and Warmforge stays free with the Salesforge plan.

Paying for Warmforge without Salesforge: that line disappears with Outreach2day, Instantly or Smartlead, where warmup is part of the price.

Paying masking on dozens of domains: move to 5 mailboxes per domain with masking included, or to Google and Microsoft mailboxes at Zapmail or InboxKit, whose DNS setup includes a tracking domain.

Needing Google or Microsoft next to SMTP: Zapmail, InboxKit or Premium Inboxes instead of adding Primeforge.

Customers

What customers say

  • “That was the best infrastructure and value for money I saw.”
    Ido RebhunIdo RebhunRenaissance
  • “…deliverability with your inboxes is better than our outlook/google inboxes…”
    Daniel DultsinDaniel DultsinControl
  • “We really would like to thank you for that report. We don’t know what we are doing with email and it is very reassuring to us to know we have a partner on top of the ball.”
    ReilcapBill OConnorReilcap

Switching from Mailforge

  1. Create mailboxes in Outreach2day on new domains, or transfer your Mailforge domains out; Mailforge supports transfers.
  2. Warmup starts on its own. No cold email for 14 days.
  3. Send from our own sequencer, or sync the mailboxes to Instantly or Smartlead with an API key. Salesforge connects over SMTP/IMAP.
  4. Keep the Mailforge slots sending until ours reach up to 25 cold emails a day around day 21, then cancel; Mailforge has no contract.

Mailforge alternatives: questions

What is the cheapest Mailforge alternative?

For the full setup at 100 mailboxes, Outreach2day at $250 a month, masking included. Mailforge slots with an Instantly plan cost $397, and $482 with Salesforge, before masking.

Does Mailforge include warmup?

Not in Mailforge itself. Warmup is Warmforge, a separate product, free with a Salesforge subscription. Ours is included in every mailbox.

How many mailboxes per domain does Mailforge recommend?

2–3 per domain, at 30 emails per mailbox a day and at most 100. We recommend up to 5 per domain and up to 25 cold emails per mailbox a day.

Which Mailforge alternatives sell Google Workspace mailboxes?

Zapmail, InboxKit, Premium Inboxes and Instantly. In the Forge family, Google and Microsoft mailboxes are Primeforge.

Does Mailforge sell pre-warmed mailboxes?

Mailforge's blog (August 20, 2026) says the Forge products sell pre-warmed mailboxes at the same rate as fresh ones; its pricing page, read September 29, 2026, doesn't list them. We don't sell pre-warmed mailboxes: ours warm up for 14 days, included in the $2.50.

Can I keep Salesforge and use Outreach2day mailboxes?

Yes. Salesforge connects any SMTP/IMAP mailbox, and ours come with SMTP and IMAP logins. Warmup keeps running on our side.

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

More comparisons and guides

Sources

Checked . 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

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