skillrank_skill ▸ nicepkg/email-subject-line-optimizerMIT · open registry

skill detail

← registry

Email Subject Line Optimizer

nicepkg/email-subject-line-optimizer

A/B test subject line variations using proven copywriting frameworks. Predict open rates based on historical performance.

communityprovisionaltestingtestsubjectline

skillrank score

█████░░░░░░░░░░░32

SkillRank score blends community stars, real usage, and our eval lift; provisional until a skill is evaluated -- so popularity alone can't reach the top tier.

source

★ 277

nicepkg/ai-workflow

workflows/content-creator-workflow/.claude/skills/email-subject-line-optimizer

open on GitHub ▸

eval status

eval pending

Success delta, token delta, and trial count are not available yet. No eval number is shown until this skill has measured results.

install

$ skillrank install nicepkg/email-subject-line-optimizer
$ curl -fsSL skillrank.dev | sh