substack-post-crafter
Installation
SKILL.md
Substack Post Crafter Skill
The Email-First Mindset
Substack is primarily email. Every design decision should optimize for:
- Subject line (determines open)
- Preview text (first 40-90 chars of subtitle)
- Hook (determines if they keep reading)
- Mobile readability (80% of email opens are on mobile)
Subject Line Mastery
Your subject line = your post title. It determines everything.
The 7-Word Rule
Studies show 7 words hit the sweet spot between too short and too long. Aim for 30-50 characters to fit mobile screens.