cold-iq/coldiq-s-gtm-skills · master-skills/cold-email/.claude/skills/subject-lines/SKILL.md
subject-lines skillA
Writes and optimizes subject lines for cold emails. Use when the user asks to "write a subject line", "improve my subject line", "subject line ideas", "A/B test subject lines", "open rate optimization", "my open rates are low", or needs help with email subject lines specifically. Also triggers on "subject line best practices", "what subject line should I use". Do NOT use for writing full email body copy (use first-touch or follow-up), deliverability issues causing low opens, or newsletter subjec
Latest version
mdr add cold-iq/coldiq-s-gtm-skills/subject-lines@git:20260716.5747a86Exact content
mdr add cold-iq/coldiq-s-gtm-skills/subject-lines@sha256:08ec1ee1a4e2a5b4Badge
[](https://markdownregistry.com/a/art_auba6ksrj6omicpw)
0 badge views in 30 days
Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260716.5747a86 latest | 2026-07-16 | 5747a86 | 4,342 B | A | view · diff |
| git:20260219.bb3ec14 | 2026-02-19 | bb3ec14 | 3,262 B | A | view · diff |
| git:20260210.9573698 | 2026-02-10 | 9573698 | 3,258 B | A | 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 (4342 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
cold-iq/coldiq-s-gtm-skills · 269 stars · license none · pushed 2026-09-02 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_auba6ksrj6omicpw GET https://markdownregistry.com/api/v1/resolve?ref=cold-iq/coldiq-s-gtm-skills/subject-lines GET https://markdownregistry.com/api/v1/blob/08ec1ee1a4e2a5b4995c145cd807cb7eadad3a096ba53a4374e693371eafe65f