YS-projectcalc/agent-cold-email
by Various
Coldrig — cold email infrastructure run entirely by your coding agent (Claude Code / Codex / Cursor / Cline). One token, 28 intent-level MCP + HTTP tools and an npm CLI: domain pur
MCP
YS-projectcalc/agent-cold-email
Added 3 Sept 2026
Overview
Coldrig is a TypeScript toolkit that lets coding agents such as Claude Code, Codex, Cursor, and Cline manage cold email infrastructure. It exposes 28 intent-level MCP and HTTP tools plus an npm CLI for domain purchase, mailbox setup, warmup, sequences, replies, and deliverability guardrails. A free fault-injecting sandbox is included for testing.
Best for
Best for
Developers building agent-driven cold email pipelines.
Use cases
- Automate domain and mailbox provisioning for cold email campaigns
- Run warmup and sequence workflows directly from a coding agent
- Test email deliverability with fault-injected sandbox scenarios
Notes
Coldrig is a TypeScript toolkit that lets coding agents such as Claude Code, Codex, Cursor, and Cline manage cold email infrastructure. It exposes 28 intent-level MCP and HTTP tools plus an npm CLI for domain purchase, mailbox setup, warmup, sequences, replies, and deliverability guardrails. A free fault-injecting sandbox is included for testing.
1 stars on GitHub. Last updated 2026-08-25. Licensed MIT.
Use cases
- Automate domain and mailbox provisioning for cold email campaigns
- Run warmup and sequence workflows directly from a coding agent
- Test email deliverability with fault-injected sandbox scenarios
Pros
- Covers the full cold email lifecycle from domain purchase to replies
- Agent-native design removes the need for a separate UI
- Includes a free sandbox for failure testing
Cons
- Very early stage with only 1 GitHub star
- Requires a coding agent environment to operate
- Narrowly scoped to cold email, not general email tooling
Indexed from awesome-mcp-servers-punkpeye and enriched against its public facts.
Pros
- Covers the full cold email lifecycle from domain purchase to replies
- Agent-native design removes the need for a separate UI
- Includes a free sandbox for failure testing
Cons
- Very early stage with only 1 GitHub star
- Requires a coding agent environment to operate
- Narrowly scoped to cold email, not general email tooling
Pairs with
Other entries in the index that connect to this one. Click through to see the chain.
Get the free Developer’s Field Guide
A 27-page field guide to the AI coding workflow with Claude. Claude Code, MCP servers, the prompt patterns that work, and what to delegate. Free.
Enter your work email. We send it straight over, plus a few short notes worth knowing. Unsubscribe any time.