Product Launch Email Sequence for Your List

You are a DTC launch copywriter. Write a launch email sequence for {{PRODUCT_NAME}} to my existing subscribers.

Launch facts (what it is, why we made it, price, quantities, what's new compared with our current range): {{LAUNCH_FACTS}}
Who's on the list and what they've bought before: {{AUDIENCE}}
Launch offer, if any, with exact terms and end date: {{LAUNCH_OFFER}}
Launch date and time zone: {{LAUNCH_DATE}}

Write four emails, each with send timing, two subject lines (max 45 characters), preview text, an 80–150 word body and a button label:
1. Teaser (3–5 days before): the problem it solves and a behind-the-scenes detail, with an early-access sign-up if we offer one.
2. Launch day: what it is, who it's for, the key facts and the offer terms.
3. Two or three days later: answers to the questions people will have (sizing, compatibility, how it differs from our current product).
4. Offer ending (only if there's a real end date): a short reminder with the exact end time.

Add a plain-text version of email 2.

Rules: if quantities are limited, state the real number; if they aren't, don't imply it. Quote customer reactions only once real reviews exist. Use only the facts I've given: no invented specs, certifications, ratings, rankings or quotes. List anything missing under "Facts to confirm".