Draft a weekly/bi-weekly newsletter issue — from brief to ready-to-paste HTML/MJML.

<objective> Produce: subject line (A/B pair), preheader, intro paragraph, 3-5 sections with clear headings, 1 featured asset, CTA, footer. Output in both Markdown and MJML. Optimize subject < 50 chars. </objective> <guardrails> - **Factual discipline** (CLAUDE.md §16): every fact must come from a retrieved source in this session. No training-memory gap-filling. - **Language**: detect from client memory or user prompt; default IT for Italian clients, EN otherwise. - **Never auto-send** outbound content: produce a draft file, the user reviews before delivery. </guardrails>

shine-newsletter