SkillMedev Email Newsletter Pro
A newsletter competes with the whole inbox. The costly mistake is optimizing the body while the subject line loses the open, or winning opens with clickbait the body cannot pay off - both burn the asset that matters most: the reader's habit of opening. Earn the open, reward it, and protect the cadence that builds the habit.
This skill covers recurring broadcast issues sent to a list. Automated sequences triggered by signup or behavior belong to email-drip-builder; if mail is landing in spam, fix that first with email-deliverability.
Operating procedure
Step 1: Gather inputs
Collect before writing. Where the user does not know a number, use the default and label it a guess.
- Audience and what they signed up for (the promise made at capture).
- This issue's single core idea - one sentence. If they offer three, make them pick one; the others become future issues or secondary links.
- Format: single-essay, curated-links, or hybrid (default: hybrid - one short essay plus 3-5 links).
- Current metrics: open rate, click rate, unsubscribe rate per send, list size (defaults: unknown - flag as guesses).
- Cadence and the one action they want readers to take (reply, read, share, buy - pick one).
Step 2: Pick the structure
- Single-essay: one idea developed in 300-800 words. Best when the author's thinking is the product. Highest reply rates.
- Curated-links: 5-10 links, each with a 1-2 sentence take explaining why it matters. The commentary is the value; a bare link list is a chore, not a newsletter.
- Hybrid: a 150-300 word lead essay plus 3-5 curated links. The safest default and easiest to sustain weekly.
Keep the chosen structure consistent issue to issue - predictable structure builds the reading habit.
Step 3: Write the subject line and preview text as a pair
- Subject under 50 characters (mobile clients truncate around there). Specific beats clever.
- The curiosity-vs-clarity tradeoff: curiosity ("The pricing mistake that cost us $40k") wins opens when the payoff inside is real; clarity ("3 pricing page teardowns") wins trust over time. Default to clarity with one concrete detail; spend curiosity only when the body fully pays it off.
- Preview text (roughly 40-90 characters shown) extends the subject with new information - never repeat the subject, never let "View this email in your browser" leak in.
- Write 5 subject candidates, pick 2, and A/B test them when the list exceeds ~2,000 subscribers (below that, a test rarely reaches significance in one send - just pick one and track over multiple issues).
Bad / good subject pairs:
- Bad: "Newsletter #47" - Good: "The onboarding email 62% of users ignore"
- Bad: "You won't BELIEVE this growth hack" - Good: "How a 2-line email lifted activation 18%"
- Bad: "Our March update and other news" - Good: "One pricing change, +$9k MRR"
- Bad: "Some thoughts on writing" - Good: "Delete your first paragraph (here's why)"
The pattern: the good version names a specific number, artifact, or tension and stays under 50 characters; the bad version is generic, hypey, or about the sender instead of the reader.
Step 4: Write the body
- Open with the single most interesting thing - front-load value; no "hope you're doing well".
- One core idea per issue. Supporting links are secondary.
- Short paragraphs (1-3 sentences), clear subheads, scannable on a phone.
- Write like a person, not a brand announcement. Cut anything that does not serve the reader's interest.
Step 5: Close with one action
One clear next step - reply, read, or share - never five competing CTAs. Prefer a reply prompt at least every few issues: replies train deliverability and build the relationship. Make replying easy ("hit reply and tell me X - I read every one").
Step 6: Check list health before and after send
- Open rate: an engaged list runs roughly 35-45%. Below 30% sustained means the list has dead weight or the subject lines are failing - diagnose before growing the list.
- Click rate: 2-4% of delivered is healthy for content newsletters.
- Unsubscribe red line: above 0.5% of recipients in a single send signals a content/audience mismatch - stop and re-read what the list was promised at signup before sending again.
- Sunset rule: after 90-180 days of no opens, move subscribers to a re-engagement attempt, then remove non-responders. A smaller engaged list out-earns a large dead one and protects sender reputation.
- Cadence: weekly is the default habit-building rhythm; biweekly is acceptable; less than monthly and readers forget who you are and unsubscribe rates spike on each send. Never skip randomly - consistency is a feature.
Newsletter skeleton template
SUBJECT: [FILL: under 50 chars, one concrete detail]
PREVIEW: [FILL: extends the subject with new info, 40-90 chars]
[FILL: 1-2 sentence cold open - the single most interesting thing this issue]
--- THE MAIN IDEA ---
[FILL: 150-800 words depending on format. One idea. Short paragraphs.
Concrete example or number in the first third.]
--- WORTH YOUR TIME --- (curated/hybrid formats only)
1. [FILL: link] - [FILL: 1-2 sentence take: why this matters to THIS reader]
2. [FILL: link] - [FILL: take]
3. [FILL: link] - [FILL: take]
--- ONE THING TO DO ---
[FILL: single CTA - reply prompt, one link, or one share ask]
[FILL: sign-off, human, 1 line]
Deliverable
Produce a send-ready issue containing: 2 subject line candidates with preview text pairs, the full body in the chosen structure, a single CTA, plus a one-line cadence/list-health note flagging any metric outside the thresholds above.
Do NOT
- Do not write clickbait the body cannot pay off - it wins one open and loses the habit.
- Do not repeat the subject in the preview text; that wastes the second-most-valuable pixels in the inbox.
- Do not stack multiple CTAs; each added ask cuts response to all of them.
- Do not chase list size while open rate sits under 30% - you are growing dead weight and hurting deliverability.
- Do not build automated welcome/onboarding flows here - that is email-drip-builder territory.
- Do not blame content for a delivery problem; if opens crater suddenly across the board, check spam placement via email-deliverability first.
Quality bar
Before the issue ships, verify:
- Subject is under 50 characters, contains one concrete specific, and the body pays it off.
- Preview text adds new information beyond the subject.
- Exactly one core idea and exactly one CTA.
- The most interesting thing appears in the first two lines, readable on a phone screen.
- Unsubscribe rate on the last send was under 0.5%; if not, the issue addresses the mismatch rather than repeating it.
- The issue matches the established structure and cadence; deviations are deliberate, not accidental.
For turning newsletter essays into social posts, route to content-repurposing.