How to Remove an Apple ID Email Address on an iPhone

Open your iPhone's Settings. It's an app with gray cogs that can be found on one of your home screens. It may also be in a folder marked "Utilities."

Scroll down and tap iCloud. It's in the fourth set of menu options.

Tap on your Apple ID primary email address. It's at the top right of your screen.

Tap Contact Information. It's directly before your Apple ID primary email address.

Tap the email address that you want to remove. Note: you cannot remove and change your primary Apple ID email address, only secondary email addresses that you've added separately after creating your Apple ID.

Tap Remove Email Address.

Tap Remove. The email address will no longer show up under your Apple ID Contact Information. Your friends will no longer be able to find you under that email address, and send you messages via Apple services, such as FaceTime, iMessage, etc.