Thinkful, which offers online courses to learn coding, has a series of 3 emails employing this tactic. These are basically abandoned cart emails, set to send out to people who have created an account and never finished their purchase of a course (after 1, 2, and then 4 days).
The subject line, “We’re holding your spot,” for example, makes the purchase seem more urgent.
They follow up with another message, “We kicked off classes last week,” playing with your sense of FOMO (fear of missing out).
Read more about what SaaS businesses can learn from cart abandonment emails