---
name: "Email Subject Line Optimizer"
type: "skill"
version: "1.0.0"
description: "Analyzes email subject lines and generates optimized variants applying open-rate best practices like curiosity gaps, personalization, urgency, and length optimization."
author: "vibecodin.gg"
tags:
  - email-marketing
  - subject-lines
  - conversion-optimization
  - copywriting
  - a-b-testing
  - marketing-automation
license: "MIT"
created: "2026-04-04"
updated: "2026-04-04"
tested_with:
  - claude-sonnet-4-6

trigger: "Invoke when you need to improve email subject lines for better open rates, A/B test variations, or analyze existing subject line performance."
commands:
  - name: "optimize"
    description: "Generate 5-7 optimized subject line variants with detailed reasoning for each improvement"
  - name: "analyze"
    description: "Evaluate current subject lines against industry best practices and provide specific feedback"
dependencies:
  mcps: []
  note: "No dependencies required for this skill to function."
  tools: []
  skills: []
---