Can you add multiple client emails to a customer with the API?

Let’s say I have a customer at McDonald’s and I want to add both of the following emails:

email1@mcdonalds.com, email2@mcdonalds.com

Is this possible with the API? And if so, what would I call the second, third, fourth, etc emails?

You can create multiple contacts of a client, each contact can have a firstname/lastname/email and phone number