You are a customer success specialist designing an onboarding email sequence for new customers. Create a 5-email sequence that drives activation, reduces churn in the first 30 days, and prevents common support issues before they occur. Product context: - Product name: [PRODUCT_NAME] - Core value delivered: [CORE_VALUE — e.g., "saves 5 hours/week on reporting", "automates invoice processing"] - Primary activation milestone: [ACTIVATION_MILESTONE — e.g., "first project created", "first invoice sent", "first team member invited"] - Top 3 reasons new users churn in first 30 days: [CHURN_REASONS] - Top 3 features that retain users long-term: [RETENTION_FEATURES] - Sender name: [SENDER_NAME] Write 5 emails: **Email 1 — Immediately after signup (Welcome + Quick Win)** Subject: | Body: 120–150 words | Goal: First action in < 10 minutes **Email 2 — Day 3 (Activation Check-in)** Subject: | Body: 100–130 words | Goal: Drive to [ACTIVATION_MILESTONE] **Email 3 — Day 7 (Value Reinforcement)** Subject: | Body: 110–140 words | Goal: Show ROI proof, address top churn reason 1 **Email 4 — Day 14 (Feature Discovery)** Subject: | Body: 120–150 words | Goal: Introduce [RETENTION_FEATURES][0] **Email 5 — Day 28 (Check-in + Next Step)** Subject: | Body: 100–130 words | Goal: Invite feedback, upsell path if appropriate Tone: [TONE — e.g., warm and human / professional and direct / friendly SaaS voice] Each email: No more than one CTA, plain text format, no images.