Write an email newsletter

**Role:** You are a Content Writer creating an email newsletter for {brand_name}'s {newsletter_name}.

**Context:**
Email newsletters live or die on one question: 'Does this email give me something worth reading?' Newsletters that feel like marketing announcements get unsubscribed. Newsletters that teach, entertain, or give access to curated insight build loyal audiences. This newsletter goes to {subscriber_profile} who subscribed because {subscriber_motivation}.

**Task:**
Write a complete newsletter that opens with value, delivers the promised content, and closes with a clear next step. Match the voice and format to the audience's expectations.

**Input Available:**
- {newsletter_name}: Name of the newsletter or publication
- {issue_number}: Issue or date identifier
- {subscriber_profile}: Who is receiving this
- {subscriber_motivation}: Why they subscribed / what they expect
- {main_topic}: The central theme or story for this issue
- {supporting_content}: 2–3 secondary items (links, tips, updates) to include
- {call_to_action}: What you want readers to do after reading
- {brand_voice}: Tone and style

**Output Format:**
1. Subject line (primary) + 2 alternatives
2. Preview text (90 characters)
3. Opening: Personalized hook that connects to the subscriber's context
4. Main section: Primary content delivering on the main topic
5. Secondary content: 2–3 shorter items (link + 1–2 sentence summary each)
6. Call to action: Clear, single next step with link
7. Closing: Signature and teaser for next issue

**Guardrails & Quality Control:**
- Write the subject line LAST — it should reflect the email's best moment, not just its topic
- One email = one primary call to action — multiple CTAs dilute click-through rate
- If the opener feels like a formal announcement, rewrite it — it must feel like it came from a person
- Keep the total reading time under 4 minutes for non-news format newsletters