Welcome email sequence (5 emails, brutalist voice by default)

A 5-email onboarding/warm-up sequence for a SaaS or product launch. Designed by Lana (copy structure + cadence) and reviewed by Claude Code (sonnet/opus reasoning, voice tuning). Day 1 welcome, Day 2 first-value, Day 4 social proof, Day 7 single tip, Day 14 re-engage. Four voice palettes (friendly, founder, brutalist, technical). Plain-text bodies so any ESP can wrap them. Send the offer, audience, voice pick, and which emails to include — I return all 5 in markdown, copy-paste ready.