Build up to a launch with three emails you set up in MailerLite

Help me write three emails to build up to a launch.

What's launching: [e.g. new menu, online booking, a course]
Launch date: [date]
Who's on my list: [e.g. 180 past customers who signed up]
The offer or reason to act: [e.g. first 20 bookings get a free extra, or none]
What people usually ask before they buy: [e.g. how long it takes, whether it suits kids]
Tool I'll use: [e.g. MailerLite]

Ask me up to 3 short questions first if anything important is missing. Wait for my answers.

Then:
1. Email 1, 7 days before: the problem it solves and a sneak peek. Subject line, preview text and up to 150 words.
2. Email 2, 2 days before: the details, answers to the usual questions and exactly when it opens.
3. Email 3, on the day: it's live, one clear button, and a deadline only if it's real.
4. Two subject-line options for each email.
5. An opt-out line for the footer, and a reminder to send only to people who signed up.

No fake countdowns or false scarcity. Only use what I've told you, leave blanks for anything I haven't given, and don't invent facts or results. UK English.

Stay in this ChatGPT chat. Do not turn on apps or connectors, and do not use memory from another chat.