Change iCloud email to another iCloud email

The main address on your iCloud account - something@icloud.com - may have additional versions (i.e. with the same text before the '@') of @me.com and @mac.com, depending on how long you've had the account. Apple refers to these alternatives as 'aliases'; you cannot change them.

As said above, once you have created an iCloud account and chosen an @icloud.com address to go with it you can't change the address (short of creating an entirely new account).

However, all is not lost. You can add up to three 'email aliases' - these are additional addresses (not accounts) which deliver into the same inbox as the main account. (In fact it's a good idea to give out alias addresses, rather than the main address, because if they attract spam you can easily change them.)

You should be aware before you start that once you've created an alias you cannot turn that address into a full iCloud account or move it to another account.

More information on aliases here: Add and manage email aliases for iCloud Mail on iCloud.com - Apple Support

Hello,

If you have an "@icloud.com" address associated with your Apple ID, it cannot be changed to a new iCloud Mail address, or removed. However, you can change your Apple ID mail address.

If your Apple ID is your iCloud address, then you can change it to a new email address, but the iCloud address will be associated with your Apple ID forever.

You can read here how to change your Apple ID:

Change your Apple ID - Apple Support

Hope this helps you!