See Tutorial Complete How To Change Your Apple Email ID Easy
JAKARTA - When you lose access to your email address, you must change Apple ID to be able to keep your account protected.
Updated email addresses will later log in to your iPhone, iPad, or Mac, as well as other Apple services such as iTunes, App Store, and iCloud.
You also don't need to worry about losing your data, because your account will remain the same, but will now be linked to a new email address.
You can change Apple's ID email in two ways, namely through the web and Apple device settings. Here's how:
First, make sure you get out of all Apple devices linked to your Apple ID, and make sure you already have the latest iCloud backups so that important data doesn't disappear.
After changing your Apple ID, please note that you can't change that again within 30 days of the last change.
Apart from the web, you can also change Apple's email ID address using the Settings menu on iPhone. Here's how: