Using the data you have on each of your contacts—such as when they open, click, and convert—and scheduling your emails to send when your contacts are mostly likely to engage with your email is the definition of what?

The answer is "Send time personalization"

Explanation:

Using the data you have on each of your contacts—such as when they open, click, and convert—and scheduling your emails to send when your contacts are mostly likely to engage with your email is the definition of "Send time personalization"

Send time personalization is the process of using the data you have on each of your contacts and then scheduling your emails to send at the time when each is most likely to engage with your email

in software engineering and computer science, abstraction is: the process of removing physical, the way that different data types interact, is the beginning of abstraction.

the answer isn’t:

what do you know?