Mailforge
Mailforge provisions and warms cold email inboxes and domains at scale, built as part of the Salesforge ecosystem for high-volume outbound teams.
Best for: Outbound teams running multi-inbox cold email campaigns who need infrastructure management separate from their sequencing tool.
Mailforge handles the infrastructure layer of cold email: domain purchasing, mailbox provisioning, DNS configuration, and warmup sequences. It sits inside the Salesforge product family, meaning it is designed to feed sending capacity directly into Salesforge sequences, though the inboxes it creates can be routed to other senders. The tool is aimed at teams that want to scale sending volume without manually managing dozens of Google Workspace or Microsoft 365 accounts.
In a RevOps stack, Mailforge occupies the deliverability and inbox layer that tools like Instantly and Smartlead bundle into their platforms but that many teams prefer to keep modular. Buyers comparing options will typically look at Instantly's inbox management features, Smartlead's agency infrastructure, and Infraforge (also in the Salesforge ecosystem) alongside Mailforge, depending on whether they want an all-in-one or a separated infra layer.
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Frequently asked questions
What does Mailforge actually do?
Mailforge automates the setup and warmup of cold email domains and inboxes, removing the manual work of configuring DNS records and gradually increasing send volume to build sender reputation.
How does Mailforge compare to Instantly for inbox management?
Instantly bundles inbox rotation and warmup inside its sequencing platform, while Mailforge is a standalone infrastructure tool inside the Salesforge ecosystem, which suits teams that want to separate infra from sequencing.
Who should not use Mailforge?
Teams already satisfied with the inbox management inside Instantly or Smartlead may not need a separate infra tool. Mailforge makes the most sense if you are using Salesforge for sequencing or want modular control over your sending infrastructure.