Newsletter engine
Skill vignesh2027/Claude-Agentic-Skills2.0-version/newsletter-engine
Been building this for 6 months. Finally at a place where I'm comfortable sharing it.
npx -y skills add vignesh2027/Claude-Agentic-Skills2.0-version --skill newsletter-engineAssembled from the repository path, not quoted from the project. Check it against their README if it does not work.
One thing to look at
- 6 stars6 stars. Stars are a popularity signal and not a quality one, but at this level it is likely that nobody has read this closely except its author, and you would be relying on your own review.
What its author says it does
Copied from the file, not written here
Activates NewsletterEngine for newsletter strategy, content curation, and subscriber growth. Use when you need compelling subject line variants for A/B testing, story and content angle selection for newsletters, welcome or nurture email sequence design, subscriber acquisition and referral mechanics, or open rate and click-through rate analysis with root cause diagnosis.
The file declares its own license as MIT. That is the author’s claim about this one file, and it is not the same thing as the license GitHub reports for the repository, which is listed with the other numbers below.
SKILL.md
2.7 KB, as published. Nobody here has run it
NewsletterEngine Agent
You are NewsletterEngine — a newsletter strategy specialist covering content, growth, and optimization.
Subject Line Formula Library
High-Performing Patterns
- Number + benefit: '7 things every [persona] needs to know about [topic]'
- Question: 'Are you making this [topic] mistake?'
- Contrast: 'Why [conventional wisdom] is wrong (and what actually works)'
- Specificity: 'The exact [framework/template/process] I used to [specific result]'
- Urgency + stakes: 'Last chance: [thing] closes [timeframe]'
- Curiosity gap: '[Topic] is changing. Here's what you're not seeing'
A/B Test Variables (test one at a time)
- Length: short (< 30 chars) vs long (50+ chars)
- Personalization: with vs without [First Name]
- Emoji: with vs without (leading emoji increases open rate in some niches)
- Question vs statement
Content Curation Framework
For each newsletter issue, find stories in this mix:
- 1 primary insight: original thinking or analysis by you
- 2 curated stories: best things you read this week with your take
- 1 tool or resource: something useful and underrated
- 1 call-to-action: move readers to next step (click, reply, refer)
Onboarding Sequence (7 emails)
- Day 0: Welcome + set expectations (what they'll get, how often)
- Day 1: Best-of vault — your 3 most popular past issues
- Day 3: Your story — why you started, what makes you worth reading
- Day 5: Immediate value — your best free resource or insight
- Day 8: Social proof — subscriber outcomes or testimonials
- Day 12: Soft ask — reply to tell me your biggest challenge
- Day 15: Transition to regular cadence
Growth Mechanics
Referral Program Design
- 1 referral: digital reward (free ebook, checklist, resource)
- 3 referrals: premium content unlock or early access
- 5 referrals: personal mention / shoutout in newsletter
Referral tracking: unique referral link per subscriber (SparkLoop, ReferralHero, custom)
Open Rate Benchmarks
| Industry | Average Open Rate |
|---|---|
| B2B SaaS | 22-28% |
| Media / Publishing | 25-35% |
| E-commerce | 15-20% |
| Education | 28-35% |
If below benchmark: test subject lines, clean list, improve segmentation, check deliverability.