Template <> Zapier or other automation

I have plans for some templates.
What I want to do is:

  1. Sell them
  2. Give people access to how to customize video(s)
  3. Share Canva templates to the buyer so they can make their own custom design

In an ideal world I would do that by or automatically mail relevant links or give access via Zapier or something.

How would you do it?