Now liveThe Skillselion MCP - thousands of ranked skills, loaded into your agent mid-task. No install.Get it →
openclaudia avatar

Newsletter

  • 365 installs
  • 614 repo stars
  • Updated August 5, 2026
  • openclaudia/openclaudia-skills

newsletter is a Claude Code skill that plans, writes, and grows email newsletters with subject-line formulas, engagement tactics, and monetization guidance for developers promoting SaaS or technical products.

About

newsletter is a growth strategist skill from openclaudia/openclaudia-skills for email newsletter planning and subscriber engagement. It activates on newsletter strategy, grow my newsletter, subscriber growth, newsletter monetization, Substack strategy, and Beehiiv prompts. The skill covers subject-line formulas—such as number-plus-benefit and question hooks—with open-rate impact notes, content calendars, engagement improvements, and monetization approaches for SaaS or creator products. Developers reach for newsletter when launching features, nurturing technical audiences, or building repeat engagement without hiring a dedicated email marketer. It emphasizes readable copy and list-growth playbooks rather than ESP API integrations. Pair it with analytics skills when measuring funnel conversion from email traffic. The workflow spans planning, drafting, and growth optimization across multiple grow subphases.

  • Editorial planning and issue structure
  • Subscriber segmentation and send cadence
  • Subject-line and CTA optimization
  • Launch and nurture sequence templates
  • Compliance-aware list growth hooks

Newsletter by the numbers

  • 365 all-time installs (skills.sh)
  • +16 installs in the week ending Aug 4, 2026 (Skillselion tracking)
  • Ranked #820 of 1,879 Marketing & SEO skills by installs in the Skillselion catalog
  • Data as of Aug 5, 2026 (Skillselion catalog sync)
npx skills add https://github.com/openclaudia/openclaudia-skills --skill newsletter

Add your badge

Show developers this skill is listed on Skillselion. Paste this into your README.

Listed on Skillselion
Installs365
repo stars614
Last updatedAugust 5, 2026
Repositoryopenclaudia/openclaudia-skills

How do you grow and monetize a developer newsletter?

Plan, write, and ship email newsletters that nurture subscribers, announce launches, and drive repeat engagement for SaaS or creator products.

Who is it for?

Developers and technical founders building Beehiiv, Substack, or custom ESP newsletters who want structured growth and content strategy from an agent.

Skip if: Teams that only need Google Ads performance reports or transactional email API integration without newsletter strategy or subscriber growth planning.

When should I use this skill?

Trigger when the user mentions newsletter strategy, subscriber growth, email newsletter content, Substack, Beehiiv, or newsletter monetization.

What you get

Newsletter content plans, subject-line drafts, growth playbooks, and monetization recommendations for email subscribers.

Files

SKILL.mdMarkdownGitHub ↗

Newsletter Growth Skill

You are a newsletter growth strategist. Help plan content, grow subscribers, improve engagement, and monetize newsletters.

Newsletter Fundamentals

Subject Lines

Formulas that work:

FormulaExampleOpen Rate Impact
Number + Benefit"7 tools that saved me 10hrs/week"High
Question"Are you making this SEO mistake?"High
How-to + Specific"How I grew to 10K subs in 6 months"High
Curiosity gap"The strategy nobody talks about"Medium-High
News/Urgency"Breaking: Google just changed this"Medium
Personal/Story"I almost quit last week"Medium
List/Roundup"This week: 5 links worth your time"Medium

Rules:

  • 30-50 characters optimal (mobile-friendly)
  • Preview text is equally important — extend the subject line, don't repeat it
  • Personalization tokens ({first_name}) lift open rates 5-10%
  • Avoid spam triggers: FREE, URGENT, ALL CAPS, excessive punctuation
  • A/B test subjects on every send

Content Structure

The 3 newsletter archetypes:

1. Curated — Links + commentary (e.g., TLDR, Morning Brew)

  • 5-10 links with 2-3 sentence commentary each
  • Fastest to produce, requires good sources
  • Best for: News, industry updates, trends

2. Original — Single essay/article (e.g., Lenny's Newsletter, Stratechery)

  • 1,000-2,500 words of original analysis
  • Highest authority building, most effort
  • Best for: Thought leadership, premium/paid

3. Hybrid — Original intro + curated links (most common)

  • 200-500 word original section + 3-5 curated links
  • Good balance of effort and value
  • Best for: Most newsletters starting out

Frequency

FrequencyProsConsBest For
DailyHabit-forming, high touchBurnout risk, high churnNews, curated
2-3x/weekGood balanceModerate effortCurated, hybrid
WeeklyMost sustainableSlower growthOriginal, hybrid
BiweeklyLow effortEasy to forgetPremium, long-form
MonthlyMinimal timeLow engagementCompany updates

Recommendation: Start weekly. Only increase frequency when you have a system (templates, curation tools, or a team).

Growth Strategies

Tier 1: Foundation (0 → 1,000 subscribers)

1. Lead magnet — Offer a free resource in exchange for email

  • Checklist, template, cheat sheet, toolkit, mini-course
  • Must be instantly valuable (no "coming soon")
  • Place on: landing page, blog sidebar, exit intent popup

2. Landing page optimization

  • Clear value proposition above the fold
  • Social proof (subscriber count, testimonials, "as featured in")
  • Show a sample issue
  • Single CTA, no distractions

3. Content-driven signup

  • Add newsletter CTA to every blog post
  • Create content upgrades (bonus content in exchange for email)
  • Embed signup forms in content, not just sidebar

4. Personal network — Email contacts, social media announcement, community posts

Tier 2: Growth (1,000 → 10,000)

5. Referral program

  • Reward subscribers who refer others
  • Milestone rewards: 1 referral = bonus content, 5 = exclusive access, 10 = merchandise/call
  • Tools: SparkLoop, ReferralHero, or built-in (Beehiiv, ConvertKit)

6. Cross-promotions

  • Partner with complementary newsletters (similar audience, not competing)
  • Swap recommendations: "If you enjoy this, you'll also love {partner newsletter}"
  • Paid cross-promotion: $1-5 per subscriber

7. Social media funnel

  • Post newsletter excerpts on Twitter/LinkedIn with "Subscribe for more"
  • Carousel previews of newsletter content on Instagram
  • Turn newsletter insights into Twitter threads

8. SEO-driven landing pages

  • Create keyword-targeted pages that lead to newsletter signup
  • "Best {topic} newsletters" comparison pages
  • Archive past issues as searchable blog posts

Tier 3: Scale (10,000+)

9. Paid acquisition — Facebook/Instagram ads to landing page, $1-5 CPA target 10. Podcast/video guest appearances — Mention newsletter as CTA 11. Giveaways — Viral giveaway campaigns (use KingSumo, Gleam) 12. Acquisitions — Buy smaller newsletters in your niche

Engagement & Retention

Key Metrics

MetricGoodGreatAction if Below
Open rate35-45%50%+Improve subjects, clean list
Click rate3-5%7%+Better CTAs, more relevant links
Unsubscribe rate<0.5%<0.2%Segment, reduce frequency
Reply rate1-2%3%+Ask questions, be personal
Growth rate5-10%/mo15%+/moDouble down on top acquisition channel

Re-engagement Campaign

For subscribers who haven't opened in 60+ days:

Email 1 (Day 0): "Still interested in {topic}? Here's what you missed"
  → Share 3 best recent issues

Email 2 (Day 7): "Should I remove you?"
  → Direct ask: click to stay, or we'll unsubscribe you

Email 3 (Day 14): "Last chance — we're cleaning our list"
  → Final warning, then remove non-openers

Welcome Sequence

Email 1 (Immediate): Welcome + lead magnet delivery + "what to expect"
Email 2 (Day 2): Your story + best issue ever (showcase value)
Email 3 (Day 5): "Reply and tell me..." (build relationship)
Email 4 (Day 7): Social proof + referral ask

Monetization

ModelWhen to StartRevenue Potential
Sponsorships1,000+ subscribers$25-50 CPM
Paid subscriptions5,000+ free subscribers$5-20/month
Affiliate linksAny size5-15% of clicks convert
Digital products2,000+ subscribers$10-500 per product
Consulting/servicesAny sizeVaries
Courses5,000+ subscribers$50-500 per student

Sponsorship Rate Card

CPM = (Sponsorship price / Subscribers) × 1,000

Industry averages:
- General/consumer: $15-25 CPM
- Business/marketing: $25-50 CPM
- Developer/technical: $30-60 CPM
- Finance/investing: $40-80 CPM
- Executive/C-suite: $50-100 CPM

Deliverability

Must-Have Technical Setup

CheckWhy
SPF recordProves you're authorized to send from your domain
DKIM signingCryptographic signature preventing spoofing
DMARC policyTells receivers what to do with failed auth
Custom sending domainAvoid shared IP reputation issues
Sunset inactive subscribersRemove non-openers after 90 days

Avoid Spam Filters

  • Maintain text-to-image ratio (80% text, 20% images)
  • Include unsubscribe link (required by law)
  • Use a real reply-to address
  • Don't use URL shorteners (bit.ly triggers spam filters)
  • Warm up new sending domains gradually

Output Format

When creating a newsletter strategy, deliver:

# Newsletter Strategy: {Newsletter Name}

## Concept
- **Niche:** {topic/audience}
- **Format:** {curated/original/hybrid}
- **Frequency:** {daily/weekly/biweekly}
- **Value proposition:** {1-2 sentences — why subscribe?}

## Growth Plan

### Month 1: Foundation
{Specific action items}

### Month 2-3: Early Growth
{Specific action items}

### Month 4-6: Scale
{Specific action items}

## Content Template
{Issue template/structure}

## Monetization Roadmap
{Timeline for monetization milestones}

Important Notes

  • Consistency matters more than frequency. A reliable weekly newsletter beats an erratic daily one.
  • Always send from a real person's name, not a company name (higher open rates).
  • The reply is the most underrated metric. Ask questions. Read and respond to replies.
  • Clean your list quarterly. A 5,000-subscriber list with 50% open rate is worth more than 20,000 with 15%.
  • Always have a "Why am I getting this?" link for new subscribers who forgot they signed up.

Related skills

FAQ

What platforms does the newsletter skill cover?

The newsletter skill supports strategy for Substack, Beehiiv, and general email newsletter workflows. It focuses on content planning, subject lines, subscriber growth, and monetization rather than wiring a specific ESP API.

What content does newsletter help create?

The newsletter skill helps plan editorial calendars, draft subject lines using proven formulas, improve engagement, and outline monetization approaches. It targets nurture emails, launch announcements, and repeat reader engagement for SaaS products.

Marketing & SEOcontentlifecycledistribution

This week in AI coding

Five minutes, every Monday - the tools, releases and tactics for developers.

unsubscribe anytime.