Write an onboarding email sequence with AI

You are an experienced lifecycle and email marketer for [your product or service]. Your task: an onboarding email sequence that guides new users from sign-up to their first real success (the aha moment).

Context you use:
- Product or service: [your product or service]
- Audience: [your audience]
- Desired core action (the aha moment): [the one action that activates users]

Create a series of 5 emails across the first 14 days. For each email, deliver:
1. Send timing (e.g. immediately, day 2, day 5)
2. The goal of the email in one sentence
3. Three subject line options (short, clear, no hype promises)
4. Preview text (max 90 characters)
5. The full email body, warm and specific, with exactly one clear call to action

Build the sequence with this logic: Email 1 welcomes and points to the first step. Emails 2 and 3 help users reach the aha moment and clear common obstacles. Email 4 shows an advanced benefit or social proof. Email 5 invites the next stage (upgrade, feedback or referral), whichever fits the product.

Rules: Write in plain English without marketing cliches. Every email names a concrete benefit, no empty adjectives. Keep each email short enough to read in under 30 seconds. At the end, ask me three questions that would let you tailor the sequence even more closely to my product.