A few days after a completed session, if nothing new is booked, Test Academy sends one email inviting the family to book again with the same tutor. Only one is sent per gap between sessions, and none once a new session is booked.
What is in it
The email links to that tutor's booking page. The link signs the family in on whatever device opens it, so there is no password to find, and it works for a week. After that it stops working and the family signs in as normal.
Booking without the email
The tutor booked most recently is first on the Book tab, marked Book again, and each past session on My sessions has a Book again button, so the email is a convenience and nothing depends on it.
Turning it off
It follows the marketing-email preference, so a family who has opted out of marketing emails does not receive it.