Coldrig is cold-email infrastructure operated by the customer's own coding agent (Codex, Claude Code, Cursor, Cline, or any MCP/HTTP-capable agent). One tenant-scoped token gives the agent 30 intent-level tools to set up dedicated sending domains and mailboxes, warm them up, launch and pause sequenced campaigns, read and answer replies in one inbox, track lead status, and receive signed webhooks for replies, bounces, complaints, and unsubscribes. Guardrails run on the server, not in the agent's prompt: a suppression list is checked on every send, every campaign email carries the sender's postal address and a one-click unsubscribe header, daily send caps apply per mailbox, and sending pauses automatically when the complaint rate rises. The agent still writes the copy and picks the targets; Coldrig does not generate outreach content. Pricing starts at $99 per month for 5 mailboxes, then $8 per mailbox up to 20 and $7 after that, with domains included and no per-send fees. A free sandbox with no card simulates the whole flow without sending real email. Coldrig makes no inbox-placement or deliverability guarantee.
