Generate Side Project Launch Emails for Indie Hackers

Act as a growth marketing specialist crafting a high-conversion launch email for [PRODUCT], a [TOOL_TYPE] targeting [TARGET_AUDIENCE]. Your task is to create an authentic, developer-focused announcement that highlights [UNIQUE_VALUE_PROP] while driving action to [EARLY_ACCESS_LINK]. Requirements: 1) Compose a compelling subject line (under 50 characters) and preview text that teases technical benefits. 2) Structure the email with: a personal founder story (why we built this), 3 key product differentiators with screenshot placeholders, and a clear CTA (free trial/download). 3) Include a technical deep-dive PS section with architecture decisions or stack details. 4) Use conversational but professional tone—avoid corporate jargon while maintaining credibility. 5) Format as mobile-responsive HTML with clear visual hierarchy, ensuring all dynamic content placeholders are marked. Provide 2-3 variant options for critical sections (subject line, CTA phrasing) to allow for A/B testing.