How do I setup a rescue email for my iOS device / Apple ID?

Apple has implemented a variety of security features over the years to protect user data, such as credit card information and so on. Some of those features include the Apple ID security questions and backup email. Adding a backup email, or “rescue email” as Apple calls it, allows you to reset your security questions, and recieve account security-related notifications. You can set up a rescue email on the Apple ID account page by following these steps: