At which point does WaveReview start sending emails automatically for our Amazon account?
Answer: Amazon accounts are set to not send emails by default, so you may have the opportunity to change your email templates and sequences, before to start sending emails.
When you're ready to start sending emails, you can switch this ON after you setup your account, just go to Account Info > Account Settings > Email sending and switch this to ON. Emails will start sending out, based on the ship date of your clients.