SuperAPI AI Directory

newsletter

Marketing & growth

View repository

Updated 10-15 21:39

About this skill

Newsletter

Overview

We plan and write email newsletters. We provide comprehensive newsletter services covering the entire process from newsletter planning to publication, subscriber acquisition strategies, open rate and click-through rate optimization, and integration with weekly and monthly content calendars.

Trigger Keywords

newsletter, email newsletter, subscribers, newsletter publishing, weekly, monthly, content subscription

Practical Newsletter Patterns (Korean Market)

1. Subject Line Patterns with 30%+ Open Rate

Pattern Example Open Rate
Number + Benefit "3 AI News Stories You Must Read This Week" ★★★
Curiosity Gap "Why Netflix Gave Up on OO" ★★★★
Personalization "[Name], you missed ~" ★★★
Time Limit "Deadline today — if you haven't applied for ~" ★★★★
Question Type "Why does ~ do ~?" ★★★
Paradox/Twist "Don't Succeed" ★★★★
Trend Borrowing "2026 OO Year in Review" ★★★

Within 40 characters + 1 emoji or fewer + key point in the first word.

2. Newsletter Body 4-Part Structure (Hook → Story → Insight → CTA)

[Hook]    1~2 문장 — 시선 끌기 (질문·통계·역설)
[Story]   5~10 문단 — 본문 (한 인사이트 = 한 단락)
[Insight] 1~2 문단 — 독자 적용 가능한 한 줄 결론
[CTA]     1 행동 — 구체적 다음 단계 (1개만)

3. Publishing Frequency Matrix

Frequency Optimal Length Suitable Concept
Weekly (4 times/month) 800-1500자 Trend/news curation
Biweekly (2 times/month) 1500-3000자 In-depth analysis
Monthly (once/month) 3000-5000자 Comprehensive report/seasonal guide
Daily (5 times/week) Within 500 characters Short insights/tips

Maintaining the same frequency for a year is the biggest growth factor.

4. Subscriber Persona Mapping

A newsletter is like a 1:1 letter to one person — clarify one persona.

persona:
  name: "30대 후반 마케팅 매니저"
  job: "B2B SaaS 회사 마케팅 팀장"
  pain: "데이터 분석 시간 부족·트렌드 따라가기 어려움"
  habit: "주간 출퇴근길 10분 읽기"
  preference: "실전 적용 가능한 1~2 인사이트"

One persona → all content decisions (subject line, length, tone, send time).

5. Five Subscriber Growth Channels

  1. Cross-promotion with existing channels — signup form on blog/SNS
  2. Referral system — "when you refer a friend ~"
  3. Strengthen landing page — preview of first email after signup
  4. Partial content disclosure — full version exclusive to subscribers
  5. Collaboration — mutual recommendation with similar newsletters (possible from 10,000+ subscribers)

Workflow

Step 1: Identify the purpose of the newsletter

  • Purpose: Brand awareness / lead nurturing / customer relationships / monetization
  • Sending frequency: Weekly / biweekly / monthly
  • Target readers: Job roles, interests, subscription motivation

Step 2: Designing the newsletter structure

[제목 (Subject Line)]
- 문자 수: 40자 이내 (모바일 잘림 방지)
- 이모지: 1개 이내 (너무 많으면 스팸 처리)
- 개인화: "[이름]님," 접두어 (오픈율 +20%)
- 공식: [숫자/질문/혜택] + [키워드]
  예: "이번 주 읽어야 할 AI 뉴스 3가지"

[프리헤더 (Preview Text)]
- 40~100자 이내 (제목 보완 설명)

[본문 구조]
① 인트로 (3~5문장): 이번 호 핵심 메시지
② 메인 콘텐츠 (1~3개 섹션):
   - 큐레이션: 업계 뉴스 + 편집자 코멘트
   - 인사이트: 독자가 얻을 수 있는 핵심 관점
   - 실용 정보: 도구, 팁, 체크리스트
③ CTA (1개만): 명확한 다음 행동 유도
④ 마무리: 다음 호 예고 + 구독 유지 동기

Step 3: Optimizing open rates

High open rate subject line formulas:

  • Question type: "Why does ~ fail?"
  • Number type: "5 things you can't miss this week"
  • Personalization: "[Topic the reader is interested in] complete guide"
  • Urgency: "~ revealed only today"
  • Curiosity: "The truth about ~ that no one talks about"

Subject lines to avoid:

  • "Hello, this is the [Company Name] newsletter"
  • "We're sharing this month's news"
  • Excessive emojis (overusing 🔥💯🎁🚀)

Step 4: Subscriber acquisition strategy

Lead magnet (subscription incentive):

  • Free templates, checklists, guide PDFs
  • Exclusive information, discount codes
  • Preview of special content for the first issue

Subscription form optimization:

  • Minimize input fields (1 email → highest conversion rate)
  • State "we don't send spam"
  • Disclose sending frequency and content examples

Distribution channels:

  • Website popup / blog footer / SNS profile link
  • Partnerships: Cross-promote with similar newsletters

Step 5: Recommended sending platforms

Domestic/global email sending tools:

  • Stibee: Domestic optimization, Korean language support, free for small scale
  • Mailchimp: Global standard, free for up to 500 subscribers
  • ConvertKit: Creator-focused, strong automation
  • Substack: Paid subscription model, built-in payments
  • Ghost: Blog + newsletter integration, self-hosted

Step 6: Designing a content calendar (monthly)

Example monthly newsletter calendar (weekly publishing):

1주: 업계 트렌드 요약 (큐레이션 중심)
2주: 심층 인사이트 (오리지널 콘텐츠)
3주: 실용 도구·팁 (How-to 중심)
4주: 독자 사례·Q&A + 다음 달 예고

Usage examples

  • "Write the first issue of a startup weekly newsletter"
  • "Create 10 email subject line candidates (to increase open rates)"
  • "Plan a strategy to acquire 1,000 subscribers"
  • "Create a monthly newsletter content calendar"
  • "Put together an industry trends newsletter structure"

Output format

  • Newsletter draft (subject line, preheader, body, CTA)
  • Subject line candidates (10-15, open rate optimized)
  • Subscriber acquisition strategy guide
  • Content calendar (monthly/quarterly)
  • Sending platform recommendations

Precautions

⚠️ Caution with AI-generated content: Verify the facts before sending newsletter content generated by AI. Always verify the original sources for industry statistics, links, and people's information.

Triggering spam filters: Excessive emojis and overuse of words like "free" and "discount" can be classified as spam. Minimize spam-triggering words in subject lines and body text.

Platform specification changes: The rendering methods of email clients (Gmail, Naver Mail) change frequently. Test in major clients before sending.

No brand guide provided: If you provide brand tone and manner, color, and logo usage guidelines, a more consistent newsletter template can be designed.

Publish (WordPress MCP)

The completed newsletter body that has gone through ai-slop review → humanize chain can be published directly with this plugin's .mcp.jsonWordPress MCP connector (mcp.wordpress.com) registered in (when publishing a post for web archive).

  • Flow: save draft → user review → publish (title, body, and tags reflected)
  • If the connector is not connected, return only the body markdown and guide "Connect WordPress in Settings > Connectors"
  • Email sending platforms such as Stibee and Mailchimp are not targets for publishing automation, so the body for sending is used by copying it as is
  • If SNS teasers or simultaneous publishing are needed, you can cross-post with the same .mcp.json's post-bridge and typefully connectors

Related skills

  • moai-content:blog — Writing SEO blog posts
  • moai-content:copywriting — Writing marketing copy and headlines
  • moai-content:card-news — Creating Instagram card news
  • moai-core:ai-slop-reviewer — Reviewing AI-generated text patterns