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Built for Cold EmailersHOT

Mailforge Alternative: Get Google and
Microsoft Inboxes That Heal Themselves

Stop babysitting your email infrastructure. See how Peeker's self‑healing inboxes eliminate the manual work Mailforge requires.

Trusted by 500+ Leading Cold Email Teams

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BoardyBoardy
EverOutBoundEverOutBound
Scale Your LeadsScale Your Leads
ClientPushClientPush
OO
BoardyBoardy
EverOutBoundEverOutBound
Scale Your LeadsScale Your Leads
ClientPushClientPush
OO
BoardyBoardy
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001Peeker vs. Mailforge

How Peeker Compares To Mailforge

Mailforge facts come from Mailforge's own website and were checked on November 6, 2026.

Feature
Peeker logo
Mailforge
What you get
Google Workspace and Microsoft (Azure) inboxes, set up for you
Shared-IP mailboxes (not Google or Microsoft)
Price
Google $3.50 down to $2.80 per inbox. Microsoft $60 per domain with 50 inboxes ($30 from 250 domains)
$3 per mailbox slot, 10 minimum. .com domains $14/yr
Setup time
Under 12 hours, most orders in 2 to 4 hours
Under 10 minutes
Inbox health monitoring
Included for every inbox: reply rates, bounces and spam placement
Not stated (sold separately as Warmforge)
Burned inbox detection
Automatic, included
Not stated
Burned inbox replacement
Automatic swaps, included
Not stated
Sequencer connections
Instantly, Smartlead, EmailBison, PlusVibe
Any sending tool, built for Salesforge
002About Mailforge

What is Mailforge?

Mailforge, part of Salesforge's Forge products, sells mailboxes on a shared pool of IP addresses. They are not Google Workspace or Microsoft inboxes.

Why teams look for a Mailforge alternative

  • Mailboxes share IP addresses, and Trustpilot reviewers report blacklisting and spam placement. Source
  • A Trustpilot reviewer reports having no control over nameservers or DNS. Source
  • Trustpilot reviewers report being charged after cancelling. Source

When Mailforge is the better pick

Pick Mailforge if you already use Salesforge and want the cheapest, fastest mailboxes and can accept shared IPs.

Mailforge facts checked on November 6, 2026: Mailforge pricing, Mailforge home page, Mailforge on Trustpilot

003Why Peeker
Features Others Don't Have

Why Cold Emailers Love Peeker

Cold emailers need infrastructure that works without constant babysitting. Peeker gives you inboxes that track their own health and replace themselves before deliverability tanks.

001

Real-Time Deliverability Tracking

Track actual inbox health using reply rate data and performance metrics. Know which domains are healthy, underperforming, or burned before your campaigns suffer.

Deliverability Analytics
Deliverability tracker dashboard view

002

Automated Inbox Swaps

When an inbox gets flagged, swap it for a fresh one automatically. No manual intervention, no downtime, no lost sending capacity.

Auto Replacement & Swapping
Automated inbox swaps interface
004Switch to Peeker
Hear From Top Leading Giants

See Why Cold Emailers
Made the Switch from Mailforge

Teams switch to Peeker when they're tired of burned inboxes killing their campaigns without warning.

005FAQs
Find Answers

Peeker vs Mailforge
Questions

What teams ask before switching from Mailforge to Peeker.

No. Mailforge mailboxes run on a shared IP pool. Salesforge sells Google and Microsoft mailboxes separately as Primeforge. Peeker provides Google Workspace and Microsoft inboxes with tracking built in.
Mailforge charges $3 per mailbox slot per month with a 10-slot minimum, plus $14 a year per .com domain. Peeker charges $3.50 per Google inbox up to 249, falling to $2.80 from 1,000, with monitoring and automatic swaps included.
If an inbox shows signs of being burned, Peeker pauses it, tells you, and lets you swap it for a fresh one without risking the rest of your inboxes.
Peeker connects to Instantly, Smartlead, EmailBison and PlusVibe.
Yes. Peeker subscriptions can be canceled at any time, and you keep access until the end of the billing period.