cesarjoquin/marketing-skills · skills/cold-email/SKILL.md

cold-email skillA

cold-email is agent-read markdown (skill) from cesarjoquin/marketing-skills: Write B2B cold emails and follow-up sequences that get replies. Use when the user wants to write cold outreach emails, prospecting emails, cold email campaigns, sales development emails, or SDR emails. Also use when the user mentions "cold outreach," "prospecting email," "outbound email," "email to leads," "reach out to prospects," "sales email," "follow-up email sequence," "nobody's replying to my emails," or "how do I write a cold email." Covers subject lines, opening lines, body copy, CTAs, p.

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add cesarjoquin/marketing-skills/cold-email@v2.0.0
Exact content
mdr add cesarjoquin/marketing-skills/cold-email@sha256:b7f8d793169a5111

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_ec7qas22azifcojd.svg)](https://markdownregistry.com/a/art_ec7qas22azifcojd)

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Versions

versioncommittedcommitsizeaudit
v2.0.0 latest2026-05-26 68cb59a 7,350 BA view · diff
v2.0.02026-05-14 75fcce7 7,197 BA view · diff
v1.1.02026-03-04 3a7b0ae 7,189 BA view · diff
v1.1.02026-03-04 c9092cb 6,832 BA view · diff
v1.1.02026-03-04 49b04f1 7,155 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (7350 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

GitHub

cesarjoquin/marketing-skills · 183 stars · license MIT · pushed 2026-09-03 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_ec7qas22azifcojd
GET https://markdownregistry.com/api/v1/resolve?ref=cesarjoquin/marketing-skills/cold-email
GET https://markdownregistry.com/api/v1/blob/b7f8d793169a5111c857e5720c6b80028686cc95d5a0d0d6570957c2710aff9e