Draft a welcome and onboarding email sequence for new plugin users

A customer just purchased the premium license for your SEO plugin, [Plugin Name].
Most churn happens in the first 14 days, usually because people install it, get
busy, and never configure the one setting that actually improves rankings.

Write a 3-email onboarding sequence: Day 0 (right after purchase), Day 3, and
Day 10.

Requirements:
- Day 0: activation only. Where the license key goes, and the one setup step
  that matters most (for example, connecting Search Console), and nothing else.
  No feature tour yet, since a new user with ten instructions in front of them
  does none of them.
- Day 3: check whether they completed that one step. Since this is a template,
  not a live system, write it as a conditional: "if you haven't connected Search
  Console yet, here's the 2-minute version," and give the direct benefit of doing
  it, not a list of unrelated features.
- Day 10: one genuinely useful feature they likely haven't found yet, tied to a
  concrete outcome (for example, finding pages losing rankings), plus a single,
  low-pressure invitation to reply if anything's confusing. Not a sales pitch for
  the next tier.
- Keep each email under 120 words. Subject lines should describe the specific
  action, not "Getting Started with [Plugin Name]!"

Replace [Plugin Name] and the setup step with your actual product before running
this.