Mailforge review: low-cost shared-IP SMTP mailboxes, one piece of the Forge stack

Mailforge sells SMTP mailboxes on shared IPs for $3 a month, falling to $2 at volume and $1.67 on yearly billing. It does the mailbox and DNS well and fast. Warm-up is Warmforge, sending is Salesforge, and Forge's own help center says shared IPs tie your deliverability to other users.

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

Mailforge at a glance

Price per mailbox
from $1.67 (yearly, 1,000+ slots); $3 monthly on small orders
Smallest order
10 mailbox slots, $30 a month, plus domains
Mailbox types
SMTP
Warm-up
Not in Mailforge; Warmforge is a separate Forge product
MCP server
The shared Forge MCP server covers Mailforge domains, mailboxes and DNS
Trustpilot
3.7 / 5 from 18 reviews

Who Mailforge fits

Pick Mailforge if

  • You want cheap SMTP mailboxes and accept shared IPs
  • You already use Salesforge and Warmforge
  • You buy hundreds of slots and can commit yearly
  • You want an API and MCP access to provisioning

Look elsewhere if

  • You want warm-up and sending in one bill
  • You need Google or Microsoft mailboxes (that is Primeforge)
  • You want reputation isolated from other customers
  • You may need a refund

What Mailforge is

Mailforge is the shared-infrastructure member of the Forge products from Salesforge. Infraforge sells the same kind of mailbox on dedicated IPs, Primeforge sells Google and Microsoft mailboxes, and Warmforge and Salesforge handle warm-up and sending. Each is a separate subscription.

Inside Mailforge you buy domains in bulk (or bring yours), and it sets SPF, DKIM, DMARC and a tracking domain for each, then creates SMTP/IMAP mailboxes in minutes. Workspaces keep projects apart, and mailboxes move between them.

There is no sequencer. Mailboxes go to Salesforge natively, or to Instantly and Smartlead by CSV. Forge notes that Mailforge mailboxes cannot be warmed in Instantly's pool.

Shared-IP SMTP/IMAP mailboxes and domains in bulk with automatic DNS; no sequencer source (opens the vendor's page in a new tab) Part of the Forge products of Salesforge, with Infraforge, Primeforge and Warmforge; launched January 2024 source (opens the vendor's page in a new tab)

Mailforge pricing

Mailforge plans and prices
PlanPriceMailboxesPer mailboxBillingIncludes
Mailbox slots, 1–100 add-on$3 a mailbox a month10 base + up to 100$3.00monthlyAutomatic DNS, hosting, support source (opens the vendor's page in a new tab)
Mailbox slots, volume tiers$2.90 down to $2.00 a mailbox101+ add-on slots, $0.10 less per 100$2.00–$2.90monthlyThe 10 base slots stay at $3 source (opens the vendor's page in a new tab)
Mailbox slots, yearly$30 down to $20 a mailbox a year10+$1.67–$2.50yearlyTwo months free on mailboxes source (opens the vendor's page in a new tab)
.com domain$14 a yearn/ayearlyNo yearly discount on domains source (opens the vendor's page in a new tab)
SSL and domain masking$2 a domain a monthn/amonthlySSL redirect and masking source (opens the vendor's page in a new tab)

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

You pay per slot, used or not. The first 10 slots always cost $3; add-on slots get $0.10 cheaper per hundred down to $2.00 above 1,000. Yearly billing is $30 to $20 a mailbox a year, two months free. Mailforge's calculator puts 25 mailboxes at $75 a month on monthly billing.

On top: .com domains at $14 a year, $2 a domain a month if you want SSL and domain masking, then whatever you pay for warm-up and a sequencer. The Mailforge line is the small part of a Forge bill.

Mailforge limits, setup and terms

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

Other Mailforge features

Shared IPs
Forge's own help center says Mailforge deliverability can depend on other users' activity source (opens the vendor's page in a new tab)
Automatic DNS
SPF, DKIM, DMARC and a custom tracking domain per domain, with bulk DNS updates source (opens the vendor's page in a new tab)
Pre-warmed
The home page and API offer pre-warmed domains and mailboxes; the help center lists none for Mailforge source (opens the vendor's page in a new tab)
Workspaces
Separate workspaces per project; domains and mailboxes move between them source (opens the vendor's page in a new tab)

In detail

Shared IPs, in Forge's own words

Forge's comparison of its three mailbox products lists the trade-off openly: on Mailforge, deliverability can depend on other users' activity. That is the price of $2 to $3 mailboxes, and the reason Infraforge exists at $3 to $4.

Forge recommends 30 emails per mailbox a day, 100 at most, and 2 to 3 mailboxes per domain. Plan your mailbox count on the 30.

API, MCP and cancelling

Mailforge has a public REST API for workspaces, domains, DNS, masking, mailboxes and analytics, and the shared Forge MCP server at mcp.salesforge.ai covers its domains and mailboxes. Forge lists known gaps, such as changing a mailbox's daily limit.

There are no refunds on any Forge product, and cancelling takes a live-chat request at least seven days before the term ends. Miss the window and the next term is billed.

Mailforge ratings

The Mailforge home page shows a "4.9 Rating" badge without saying where it comes from. G2 did not load for us.

Mailforge 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 a sending engine in the $2.50 instead of Warmforge plus Salesforge
  • You want month-to-month billing and cancellation without a 7-day notice window
  • You need 12 to 100 mailboxes, where Forge's add-ons outweigh its slot price

Stay with Mailforge if

  • You are invested in Salesforge as your sequencer
  • You want a choice of shared or dedicated IPs from one vendor family

Mailforge review: questions

How much does Mailforge cost?

$3 a mailbox a month for up to 110 slots, falling by $0.10 per 100 add-on slots to $2.00 above 1,000. Yearly billing is $30 down to $20 a mailbox a year. The minimum is 10 slots.

Does Mailforge include warm-up?

No. Warm-up is Warmforge, a separate Forge subscription. Mailforge mailboxes cannot be warmed in Instantly's pool.

What is the difference between Mailforge and Infraforge?

Both sell SMTP mailboxes. Mailforge runs them on shared IPs from $2 to $3 a month; Infraforge on dedicated IPs from $3 to $4, billed quarterly or yearly.

Does Mailforge offer refunds?

No. No Forge product gives refunds, and cancellation must reach live chat at least 7 days before the term ends.

Does Mailforge have an MCP server?

The shared Forge MCP server at mcp.salesforge.ai covers Mailforge workspaces, domains, mailboxes and DNS, with a Mailforge API key.

What is Mailforge's Trustpilot rating?

3.7 out of 5 from 18 reviews when we checked. The 4.9 badge on its home page names no source.

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 Mailforge

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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