Mailforge alternatives: 7 priced at 2,500 emails a day, one bill for what takes four Forge products

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 2,500 cold emails a day: $150 against $434 for 84 Mailforge slots at 30 a day plus an Instantly plan. We make Outreach2day and rank it first.

Price 100 mailboxes1,000+ mailboxes? Book a call
  • Warmup and sending included
  • $2.50 a mailbox, 12 minimum
  • Month-to-month billing

Full setup · 2,500 cold emails a day

USD a month
  1. Outreach2dayOutreach2day: $150
  2. InboxKitInboxKit: $296
  3. ZapmailZapmail: $406
  4. MailforgeMailforge: $434
  5. MaildosoMaildoso: $524.50
  6. SmartleadSmartlead: $544
  7. InstantlyInstantly: $607
  8. Premium InboxesPremium Inboxes: $691.50
Mailboxes, warmup and a sequencer at list prices, 55,000 cold emails a month. Line items and sources
teams have used Outreach2day
3,600+
emails sent a day
40M+

Among them

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

Ranked

7 Mailforge alternatives, ranked

Why each one is an alternative to Mailforge, its mailbox price with the source, whether warmup and sending are included, and the full setup at 2,500 cold emails a day. We make Outreach2day and list it first.

  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.price source

    Included Warmup includedIncluded Sending included

    Full setup

    $150 / mo

    2,500 cold emails a day · Mailboxes + warmup + sequencer

  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.price source (opens the vendor's page in a new tab)

    Not included Warmup not includedNot included Sending not includedMaildoso alternatives

    Full setup

    $524.50 / mo

    2,500 cold emails a day · Mailboxes

  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.price source (opens the vendor's page in a new tab)

    Included Warmup includedNot included Sending not includedZapmail alternatives

    Full setup

    $406 / mo

    2,500 cold emails a day · Mailboxes

  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.price source (opens the vendor's page in a new tab)

    Partly, or at extra cost Warmup extra or partialNot included Sending not includedInboxKit alternatives

    Full setup

    $296 / mo

    2,500 cold emails a day · Mailboxes

  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.price source (opens the vendor's page in a new tab)

    Partly, or at extra cost Warmup extra or partialNot included Sending not includedPremium Inboxes alternatives

    Full setup

    $691.50 / mo

    2,500 cold emails a day · Mailboxes

  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.price source (opens the vendor's page in a new tab)

    Included Warmup includedPartly, or at extra cost Sending extra or partialInstantly alternatives

    Full setup

    $607 / mo

    2,500 cold emails a day · Sequencer + mailboxes

  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.price source (opens the vendor's page in a new tab)

    Included Warmup includedPartly, or at extra cost Sending extra or partialSmartlead alternatives

    Full setup

    $544 / mo

    2,500 cold emails a day · Sequencer + mailboxes

Why us

Why Outreach2day tops this list

  1. 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.

  2. 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.

  3. 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.

Cost

What the full setup costs each month

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

625 a day · 13,750 a month25 of our mailboxes; others at their own limit · USD a month
  1. Outreach2dayOutreach2day: $62.50
  2. ZapmailZapmail: $198.50
  3. MailforgeMailforge: $159
  4. MaildosoMaildoso: $212
  5. InstantlyInstantly: $232
2,500 a day · 55,000 a month100 of our mailboxes; others at their own limit · USD a month
  1. Outreach2dayOutreach2day: $150
  2. ZapmailZapmail: $406
  3. MailforgeMailforge: $434
  4. MaildosoMaildoso: $524.50
  5. InstantlyInstantly: $607
10,000 a day · 220,000 a month400 of our mailboxes; others at their own limit · USD a month
  1. Outreach2dayOutreach2day: $600
  2. ZapmailZapmail: $1,480
  3. MailforgeMailforge: $1,344.80
  4. MaildosoMaildoso: $1,948.50
  5. InstantlyInstantly: $2,194

  • Outreach2dayMailboxes + warmup + sequencer

    625 a day13,750 a month
    $62.50 / mo25 mailboxes at $2.50, warmup and a sequencer included $62.50
    2,500 a day55,000 a month
    $150 / mo100 mailboxes at $1.50 (volume price from 100), warmup and a sequencer included $150
    10,000 a day220,000 a month
    $600 / mo400 mailboxes at $1.50 (volume price from 100), warmup and a sequencer included $600

  • MaildosoMailboxes

    625 a day13,750 a month
    $212 / mo42 Maildoso mailboxes × $2.50 (the number needed at 15 a day) $105 + Instantly Hypergrowth $107
    2,500 a day55,000 a month
    $524.50 / mo167 Maildoso mailboxes × $2.50 (the number needed at 15 a day) $417.50 + Instantly Hypergrowth $107
    10,000 a day220,000 a month
    $1,948.50 / mo667 Maildoso mailboxes × $2.50 (the number needed at 15 a day) $1,667.50 + Instantly Hypergrowth + 2 Outbound add-ons $281

  • ZapmailMailboxes

    625 a day13,750 a month
    $198.50 / moZapmail Starter + 15 extra mailboxes $91.50 + Instantly Hypergrowth $107
    2,500 a day55,000 a month
    $406 / moZapmail Pro (100 mailboxes) $299 + Instantly Hypergrowth $107
    10,000 a day220,000 a month
    $1,480 / moZapmail Pro + 300 extra mailboxes $1,199 + Instantly Hypergrowth + 2 Outbound add-ons $281

  • InstantlySequencer + mailboxes

    625 a day13,750 a month
    $232 / mo25 Google accounts × $5 $125 + Instantly Hypergrowth $107
    2,500 a day55,000 a month
    $607 / mo100 Google accounts × $5 $500 + Instantly Hypergrowth $107
    10,000 a day220,000 a month
    $2,194 / mo400 Google accounts × $5 $2,000 + Instantly Hypergrowth + add-on $194

  • MailforgeMailboxes

    625 a day13,750 a month
    $159 / moMailforge 21 slots (21 mailboxes at 30 a day) $63 + Salesforge Growth $96
    2,500 a day55,000 a month
    $434 / moMailforge 84 slots (84 mailboxes at 30 a day) $252 + Salesforge Growth + 1 step $182
    10,000 a day220,000 a month
    $1,344.80 / moMailforge 334 slots (334 mailboxes at 30 a day) $904.80 + Salesforge Growth + 4 steps $440

How we count: every vendor at the same emails a day, each at its own published emails per mailbox a day (ours 25, Premium Inboxes 15, Maildoso 15, Mailforge 30, InboxKit 40), so a cheap mailbox that sends fewer emails needs more mailboxes. A month is 22 sending days, so emails a month = emails a day × 22. List prices on monthly billing, in USD, excluding domains, taxes and discounts. A mailbox-only vendor cannot send campaigns on its own, so its total is the full sending setup: its mailboxes, domains and the sequencer plan that covers the volume. Instantly is the reference sequencer, on its published plans for the emails and new contacts a month (emails ÷ 3); Smartlead where Instantly publishes no plan; Mailforge with Salesforge, because its mailboxes cannot be warmed in Instantly. The mailbox line is listed on its own in every cell.Outreach2day on comparison pages: $2.50 a mailbox up to 99, $1.50 from 100, $0.50 from 1,000.

Your saving · 10,000 a day

You save $744.80 a month ($8,938 a year)with Outreach2day at 10,000 cold emails a day, against the full Mailforge setup at list prices

We move your mailboxes and campaigns for you, free

New · Outreach2day volume pricing

The mailbox price falls from 100 and again from 1,000 mailboxes

Warmup, the sequencer and the replies inbox included at every tier

  1. Up to 99 mailboxes$2.50a mailbox a month
  2. From 100 mailboxes$1.50a mailbox a month
  3. From 1,000 mailboxes$0.50a mailbox a month

Enterprise plan. Better prices for larger volumes.

Book a call

At scale

From 25,000 to 1,000,000 cold emails a day

The same setups at larger daily volumes. A vendor without a published price at a size reads “Custom pricing (not published)” and has no bar.

Running 25,000+ a day? Enterprise plan: better prices for larger volumes.Book a call

25,000 a day · 550,000 a month1,000 mailboxes · USD a month
  1. Outreach2day all-inOutreach2day all-in: $716.67
  2. Maildoso + InstantlyMaildoso + Instantly: $1,965.25
  3. Zapmail + InstantlyZapmail + Instantly: $4,066.83
  4. Instantly + its done-for-you Google accountsInstantly + its done-for-you Google accounts: $5,956
  5. Mailforge + SalesforgeMailforge + Salesforge: $3,123.13
50,000 a day · 1,100,000 a month2,000 mailboxes · USD a month
  1. Outreach2day all-inOutreach2day all-in: $1,433.33
  2. Maildoso + InstantlyMaildoso + Instantly: $3,708.25
  3. Zapmail + InstantlyZapmail + Instantly: $8,036.58
  4. Instantly + its done-for-you Google accountsInstantly + its done-for-you Google accounts: $11,815
  5. Mailforge + SalesforgeMailforge + Salesforge: $5,894.67
100,000 a day · 2,200,000 a month4,000 mailboxes · USD a month
  1. Outreach2day all-inOutreach2day all-in: $2,866.67
  2. Maildoso + InstantlyMaildoso + Instantly: $7,155.50
  3. Zapmail + InstantlyZapmail + Instantly: $16,064.17
  4. Instantly + its done-for-you Google accountsInstantly + its done-for-you Google accounts: $23,620
Mailforge + Salesforge: no published price at this volume, so no bar.
250,000 a day · 5,500,000 a month10,000 mailboxes · USD a month
  1. Outreach2day all-inOutreach2day all-in: $7,166.67
Maildoso + Instantly, Zapmail + Instantly, Instantly + its done-for-you Google accounts, Mailforge + Salesforge: no published price at this volume, so no bar.
500,000 a day · 11,000,000 a month20,000 mailboxes · USD a month
  1. Outreach2day all-inOutreach2day all-in: $14,333.33
Maildoso + Instantly, Zapmail + Instantly, Instantly + its done-for-you Google accounts, Mailforge + Salesforge: no published price at this volume, so no bar.
1,000,000 a day · 22,000,000 a month40,000 mailboxes · USD a month
  1. Outreach2day all-inOutreach2day all-in: $28,666.67
Maildoso + Instantly, Zapmail + Instantly, Instantly + its done-for-you Google accounts, Mailforge + Salesforge: no published price at this volume, so no bar.
Monthly cost of mailboxes, warmup and sending from 25,000 to 1,000,000 cold emails a day: Outreach2day, Maildoso, Zapmail, Instantly, Mailforge
Setup25,000 a day550,000 a month1,000 mailboxes50,000 a day1,100,000 a month2,000 mailboxes100,000 a day2,200,000 a month4,000 mailboxes250,000 a day5,500,000 a month10,000 mailboxes500,000 a day11,000,000 a month20,000 mailboxes1,000,000 a day22,000,000 a month40,000 mailboxes
Outreach2day all-in$716.67$1,433.33$2,866.67$7,166.67$14,333.33$28,666.67
Maildoso + Instantly$1,965.25$1,248.58 more$3,708.25$2,274.92 more$7,155.50$4,288.83 moreCustom pricing (not published)Custom pricing (not published)Custom pricing (not published)
Zapmail + Instantly$4,066.83$3,350.16 more$8,036.58$6,603.25 more$16,064.17$13,197.50 moreCustom pricing (not published)Custom pricing (not published)Custom pricing (not published)
Instantly + its done-for-you Google accounts$5,956$5,239.33 more$11,815$10,381.67 more$23,620$20,753.33 moreCustom pricing (not published)Custom pricing (not published)Custom pricing (not published)
Mailforge + Salesforge$3,123.13$2,406.46 more$5,894.67$4,461.34 moreCustom pricing (not published)Custom pricing (not published)Custom pricing (not published)Custom pricing (not published)

Outreach2day: 25 cold emails per mailbox a day, 5 mailboxes per domain, .com domains at $13 a year (1,000 mailboxes and 200 domains at 25,000 a day; 40,000 and 8,000 at 1,000,000). Instantly and Smartlead with the accounts they sell, at the published plan for the volume; mailbox vendors at their own emails-per-mailbox limit with their domains and the Instantly (Mailforge: Salesforge) plan for the volume. A month is 22 sending days, so emails a month = emails a day × 22. Where a vendor publishes no price at that size the cell says so and the chart leaves it out. At this size the main table's flat $2.50 a Maildoso mailbox gives way to its published packs.

Every line at scale

  • Outreach2day all-in, 25,000 a day: 1,000 mailboxes at $0.50 (volume price from 1,000), warmup and sequencer included ($500) + 200 domains at $13 a year ($216.67) = $716.67
  • Outreach2day all-in, 50,000 a day: 2,000 mailboxes at $0.50 (volume price from 1,000), warmup and sequencer included ($1,000) + 400 domains at $13 a year ($433.33) = $1,433.33
  • Outreach2day all-in, 100,000 a day: 4,000 mailboxes at $0.50 (volume price from 1,000), warmup and sequencer included ($2,000) + 800 domains at $13 a year ($866.67) = $2,866.67
  • Outreach2day all-in, 250,000 a day: 10,000 mailboxes at $0.50 (volume price from 1,000), warmup and sequencer included ($5,000) + 2,000 domains at $13 a year ($2,166.67) = $7,166.67
  • Outreach2day all-in, 500,000 a day: 20,000 mailboxes at $0.50 (volume price from 1,000), warmup and sequencer included ($10,000) + 4,000 domains at $13 a year ($4,333.33) = $14,333.33
  • Outreach2day all-in, 1,000,000 a day: 40,000 mailboxes at $0.50 (volume price from 1,000), warmup and sequencer included ($20,000) + 8,000 domains at $13 a year ($8,666.67) = $28,666.67
  • Maildoso + Instantly, 25,000 a day: 2 × 1,000 pack ($998) source (opens the vendor's page in a new tab) + 209 domains at $15 a year ($261.25) + Instantly Light Speed + 4 Outbound add-ons (sequencer, warmup) ($706) = $1,965.25
  • Maildoso + Instantly, 50,000 a day: 3 × 1,000 pack + 1 × 300 pack + 2 × 30 pack ($1,872) source (opens the vendor's page in a new tab) + 417 domains at $15 a year ($521.25) + Instantly Light Speed + 11 Outbound add-ons (sequencer, warmup) ($1,315) = $3,708.25
  • Maildoso + Instantly, 100,000 a day: 7 × 1,000 pack ($3,493) source (opens the vendor's page in a new tab) + 834 domains at $15 a year ($1,042.50) + Instantly Light Speed + 26 Outbound add-ons (sequencer, warmup) ($2,620) = $7,155.50
  • Zapmail + Instantly, 25,000 a day: Pro + 900 extra mailboxes ($2,999) source (opens the vendor's page in a new tab) + 334 domains at $13 a year ($361.83) + Instantly Light Speed + 4 Outbound add-ons (sequencer, warmup) ($706) = $4,066.83
  • Zapmail + Instantly, 50,000 a day: Pro + 1900 extra mailboxes ($5,999) source (opens the vendor's page in a new tab) + 667 domains at $13 a year ($722.58) + Instantly Light Speed + 11 Outbound add-ons (sequencer, warmup) ($1,315) = $8,036.58
  • Zapmail + Instantly, 100,000 a day: Pro + 3900 extra mailboxes ($11,999) source (opens the vendor's page in a new tab) + 1,334 domains at $13 a year ($1,445.17) + Instantly Light Speed + 26 Outbound add-ons (sequencer, warmup) ($2,620) = $16,064.17
  • Instantly + its done-for-you Google accounts, 25,000 a day: Instantly Light Speed + 4 Outbound add-ons ($706) source (opens the vendor's page in a new tab) + 1,000 done-for-you Google accounts at $5 ($5,000) + 200 domains at $15 a year ($250) = $5,956
  • Instantly + its done-for-you Google accounts, 50,000 a day: Instantly Light Speed + 11 Outbound add-ons ($1,315) source (opens the vendor's page in a new tab) + 2,000 done-for-you Google accounts at $5 ($10,000) + 400 domains at $15 a year ($500) = $11,815
  • Instantly + its done-for-you Google accounts, 100,000 a day: Instantly Light Speed + 26 Outbound add-ons ($2,620) source (opens the vendor's page in a new tab) + 4,000 done-for-you Google accounts at $5 ($20,000) + 800 domains at $15 a year ($1,000) = $23,620
  • Mailforge + Salesforge, 25,000 a day: 834 slots (10 at $3, the rest at $2.20) ($1,842.80) source (opens the vendor's page in a new tab) + 278 domains at $14 a year ($324.33) + Salesforge Growth + 10 steps (sequencer, Warmforge warmup) ($956) = $3,123.13
  • Mailforge + Salesforge, 50,000 a day: 1667 slots (10 at $3, the rest at $2.00) ($3,344) source (opens the vendor's page in a new tab) + 556 domains at $14 a year ($648.67) + Salesforge Growth + 21 steps (sequencer, Warmforge warmup) ($1,902) = $5,894.67

Why each plan at scale

Outreach2day, mailboxes/ moWarmup, sending, the inbox and analytics included.
Buy 100 mailboxes
Mailboxes
Domains
Per 1k emails

The same volume elsewhere

more a month on Mailforge, for the same 55,000 emails

  1. Outreach2dayall included
    Mailboxes with warmup and a sequencer included
  2. 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; 30 cold emails a slot a day; sequencer with warmup: Salesforge (its mailboxes cannot be warmed in Instantly), Growth $96 for 50,000 emails plus $86 a step of 50,000

Side by side

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 100+ mailboxes: $1.50 a mailbox from 100 and $0.50 from 1,000, warmup and the sequencer included; larger volumes on the Enterprise plan
  • 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 mailboxes or thousands: $2.50 up to 99, $1.50 from 100, $0.50 from 1,000

Outreach2day does not fit if

  • You want dedicated IPs (Infraforge, Inframail or Mailreef)

Mailforge

Mailforge: pricing, limits and who it fits

From Mailforge's own pages; each line links its source.

Pricing model

source (opens the vendor's page in a new tab)
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 a year, down to $20: 2 months free.

Add-ons

source (opens the vendor's page in a new tab)
.com domains $14 a year. SSL and domain masking $2 per domain a month.

Sending limits

source (opens the vendor's page in a new tab)
Mailforge recommends 30 emails per mailbox a day (at most 100) and 2–3 mailboxes per domain.

Mailbox type

source (opens the vendor's page in a new tab)
SMTP on a shared IP pool. Google and Microsoft mailboxes are a separate product, Primeforge; dedicated servers are Infraforge.

Warmup

source (opens the vendor's page in a new tab)
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.

Trial and refunds

source (opens the vendor's page in a new tab)
No free trial and no contract; prepaid fees are not refunded.

Read on .

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

Every Mailforge plan and add-on is in Mailforge pricing.

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 with follow-ups and send windows; one inbox for the replies

  • Per mailbox

    Analytics that show which mailboxes still land

    Warmup inbox, spam and bounce rate per mailbox, sends by recipient provider, Google and Outlook placement tests

  • REST API

    An API on every account

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

  • MCP server

    Run it from Claude, Cursor or Codex

    Your assistant checks domains, quotes mailboxes and sets up DNS, warmup and campaigns; you approve and pay on Stripe. Setup for each client

  • Deliverability

    SSL domain masking and link protection

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

  • 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

  • 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

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

Every slot tier and add-on is in Mailforge pricing; 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. 84 slots, enough for 2,500 cold emails a day at 30 each, are $252 a month. There is no free trial, and yearly billing takes 2 months off the slots: the Mailforge free trial and yearly discount rules are in the pricing post.

2,500 cold emails 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 $252 + $96 + $86 = $434 a month before masking. We price Mailforge with Instantly on the rest of this page, which is cheaper: $434. Ours is $150. At 625 a day: $159 against $62.50; at 10,000, $1,344.80 against $600.

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.

Comparing the SMTP sellers one by one: Maildoso and Mailscale have their own lists, in Maildoso alternatives and Mailscale alternatives.

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

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 on day 14, then cancel; Mailforge has no contract.

FAQ

Mailforge alternatives: questions

What is the cheapest Mailforge alternative?

For the full setup at 2,500 cold emails a day, Outreach2day at $150 a month, masking included. Mailforge slots with an Instantly plan cost $434, and $434 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. Outreach2day sells pre-warmed SMTP mailboxes, available now on our pre-warmed mailboxes page. Our new mailboxes warm up for 14 days, included in the $2.50, then send up to 25 cold emails a day.

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. Mailboxes are $1.50 from 100 and $0.50 from 1,000; for larger volumes we size an Enterprise plan with you.

  • 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
  • Larger volumes: the Enterprise plan and its price for your setup

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Related

More comparisons and guides

Sources

Checked . Vendors change prices and plans; if something here is out of date, write to [email protected] and we will fix it.

Outreach2day
Mailforge
Maildoso
Zapmail
Instantly
InboxKit
Premium Inboxes
Smartlead

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.

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