Changelog
Playbook: stop burning cold email inboxes, and why placement tests lead
A new playbook from a year of 300 Google Workspace inboxes run without deleting a domain: warm rotation with the daily cold and warmup mix on each side, copy and list rotation, routing, the recovery protocol and the warmup pool eleven months in. And a guide on monitoring: placement tests are the leading indicator, reply rates the lagging one.
New
- The playbook: 300 inboxes, 12 months, no domain deleted, with the redacted inbox sheet and warmup panels behind it. The playbook
- The guide: waiting for the reply rate to fall costs at least 48 hours of sending to spam; a placement test run properly catches a bad domain reputation and fingerprinted copy first. The guide
For AI agents
- WarmInboxes Free MCP has a note on leading and lagging indicators, so an agent asks for a placement test before telling anyone to wait for replies. WarmInboxes Free MCP