email-marketing-bible SKILL.md skillA
email-marketing-bible from cosmoblk/email-marketing-bible is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add cosmoblk/email-marketing-bible/email-marketing-bible@v2.8.2Pins v2.8.2 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- cosmoblk/email-marketing-bible
- Path
SKILL.md- Versions recorded
- 10
- Latest version
- v2.8.2, committed Oct 13, 2026
- First version recorded
- Mar 10, 2026
- Size
- 17,258 bytes
- Repository stars
- 367
- License
- MIT
Email marketing operating manual for AI agents, with hard send-safety gates. Use when someone plans, writes, designs, audits or sends an email campaign, newsletter, welcome series, abandoned-cart, post-purchase or win-back flow; builds a list or segment; drives Klaviyo, Mailchimp, Brevo, Kit or any ESP through MCP, an API or a connector; asks to warm up my domain, migrate from Klaviyo, Mailchimp or Brevo, or why am I in spam (bounces, complaints, DMARC, falling opens); checks GDPR, CAN-SPAM…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Email Marketing Bible By George Hartley, co-founder of [Nitrosend](https://nitrosend.com). Disclosure: Nitrosend is one of the platforms compared in references/platforms.md. > v2.8.2, 13 Oct 2026. Distilled from the EMB (19 chapters, research across 900+ sources), from running SmartrMail (~12K customers, 6B emails, sold 2022) and field notes from running an ESP through agents. > Rules and gates are here; detail is in `references/`, named by the router (§2). If `references/` is missing, fetch https://emailmarketingskill.com/llms.txt and use its URLs verbatim (Claude's fetch refuses assembled URLs); if refused, have the user paste that URL. Offline, name the chapter and never invent the figure. ## 0. Operating rules and the send gate Every segment, draft, campaign, flow or staged send on a real ESP is live. **Hard gates, never skip:** - **No send or schedule to more than one recipient until the human types "send it" in this conversation, after seeing the audience, count and content in the packet below.** Tests to the human's own seed addresses (up to five, named at session start) are part of composing. Any other single-recipient send needs an explicit yes. …
Read the whole file at its exact version.
How to install
mdr add cosmoblk/email-marketing-bible/email-marketing-bible@sha256:4737b25ac7ba7c8fThe line at the top of this page pins the label v2.8.2, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_btg4duvxyeerb5sb)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 10 versions of this file, between Mar 10, 2026 and Oct 13, 2026, about one every 24 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v2.8.2 latest | 2026-10-13 | 962648c | 17,258 B | A | view · diff |
| v2.8.1 | 2026-10-13 | e6d88d1 | 17,239 B | A | view · diff |
| v2.8.0 | 2026-10-09 | 0b28412 | 17,277 B | A | view · diff |
| v2.7 | 2026-10-06 | ef126ef | 27,567 B | A | view · diff |
| v2.7 | 2026-09-08 | b6dd8b4 | 27,497 B | A | view · diff |
| v2.6 | 2026-06-30 | ff526b0 | 33,905 B | A | view · diff |
| v2.5 | 2026-06-15 | 64e6630 | 28,539 B | A | view · diff |
| v2.0 | 2026-04-13 | 100faa5 | 41,558 B | A | view · diff |
| v1.0 | 2026-03-16 | df9903c | 21,355 B | A | view · diff |
| v1.0 | 2026-03-10 | ba0c039 | 21,265 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (17258 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
cosmoblk/email-marketing-bible · 367 stars · license MIT · pushed 2026-10-13 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_btg4duvxyeerb5sb GET https://markdownregistry.com/api/v1/resolve?ref=cosmoblk/email-marketing-bible/email-marketing-bible GET https://markdownregistry.com/api/v1/blob/4737b25ac7ba7c8f227565a68e622a5b47a4fd00643718386d20ff52f3faf37c
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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