Category
Email Deliverability
Key features
One-click mailbox warm-up
Premium aged warm-up pool
DNS, MX and blacklist health checks
01 — Overview
What is
Warmforge
Warmforge warms up Google Workspace and Microsoft 365 mailboxes with AI written emails exchanged inside a curated pool of aged accounts. It runs health checks on DNS, MX and blacklist status, offers inbox placement tests across providers and pulls warm-up emails out of spam to build sender trust. Outbound teams use it to keep cold email reaching the primary inbox as they add mailboxes.
02 — Who it’s for
Ideal Customer Profile
Built for sales teams, founders and agencies running cold email at scale, especially those already using the Salesforge product family.
03 — Capabilities
Key Features
One-click mailbox warm-up
Premium aged warm-up pool
DNS, MX and blacklist health checks
Inbox placement tests
Spam rescue to boost deliverability
API, MCP and CLI access
05 — Similar tools
Alternatives
06 — FAQ
Frequently Asked Questions
What is Warmforge used for?
Warmforge warms up and monitors cold email mailboxes so messages land in the primary inbox instead of spam.
Which mailboxes does Warmforge support?
It supports Google Workspace and Microsoft 365 mailboxes, with slots you can reassign when you swap mailboxes.
How is Warmforge related to Salesforge?
Warmforge is part of the Forge product family alongside Salesforge, Mailforge, Infraforge and Primeforge, and works with Salesforge sequences.
Does Warmforge have an API?
Yes. The site lists API, MCP and CLI access, and it is SOC 2 compliant.