email-subject-line-optimizer
email-subject-line-optimizer is an Email marketing & lifecycle skill for AI agents, published by aiskilloftheweek in the claude-ai-skill-of-the-week repository on GitHub. Skillspace rates email-subject-line-optimizer D (68/100) and it passed the safety scan; the rating is based on static analysis only.
Analyzes a subject line against proven best practices and generates 5 optimized alternative versions. Use this skill whenever the user wants to improve, test, or rewrite an email subject line. Trigger on phrases like "improve this subject line", "optimize the subject", "write a better subject line", "suggest subject line alternatives", "this subject line isn't converting", "help me with the subject line", "rewrites for the subject", or when the user pastes an email and asks specifically about the subject line (not the full body). Also trigger when the user uploads or pastes an email and says "can you improve the subject?" or similar. Do NOT trigger this skill for full email body rewrites — use email-copywriter-optimizer for that.
- Grade
- D
- Quality
- 68 / 100
- Safety
- Passed
- GitHub stars
- 82
Unproven: rated by static analysis only, not yet compared head-to-head.
Our two independent classifiers differ on this skill's category, so treat the placement as provisional.
This rating describes the version of the repository we crawled; it may have changed since, so go by its current files.
Our review
- Architecture
- 100 / 100
- Maturity
- Basic: a single SKILL.md
- Security scan
- No issues found
- License
- Not declared. Check the repository before reusing it.
- Adoption
- Adopted by 0 other repositories, in 0 collections
Not checked yet
- Not judged on the rubric yet (not a contender in its category)
- No blind task eval yet
- Scope (portable / vendor / repo-internal) not assessed; only the top of each category is read for scope
- Sibling files (scripts, references) not fetched; security scan covers SKILL.md only
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