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>log in to commentI built the Email Marketing Bible because AI keeps spitting out generic, inaccurate email advice. It’s a free, MIT‑licensed skill that gives agents 908 sources, 19 chapters and tools to build flows, audit accounts, fix deliverability, write on‑brand copy, design emails, check compliance, and even handle cold outreach. Let me know what works and what could be better 😊
The Email Marketing Bible by George Hartley: a free, MIT-licensed email marketing skill for Claude, ChatGPT and any agent. 908 sources, 19 chapters.
The email marketing skill for Claude, ChatGPT and any agent you run.
I wrote it because AI is bad at email. Ask a model for a welcome series and you get generic fluff. Ask about deliverability and it makes things up. So I put 908 sources and insights from 49 practitioners into one guide, then turned it into a skill your agent reads before it writes a word.
$git clone https://github.com/CosmoBlk/email-marketing-bible.git ~/.claude/skills/email-marketing-bible
Using ChatGPT, Codex or Cursor? Point it at the raw SKILL.md.
908 sources · 19 chapters · 4 appendices · 19 industry playbooks · 47 curated email designs · 49 practitioners · updated 8 September 2026
- Free, open‑source Email Marketing Bible built from 908 sources
- MCP‑native: any AI agent (Claude, ChatGPT, Gemini, etc.) can control email
- Full API: compose campaigns, flows, segments, templates, and send
- One‑install plugin for all Model Context Protocol agents
- Supports BYO sending providers (SES, Postmark, Mailgun, SendGrid)
- AI‑generated insights and deliverability reporting
