How to change iCloud mail

To change your iCloud mail address, you'll need to change your Apple ID. Your Apple ID is the email address you use to sign in to iCloud, App Store, and other Apple services.

Here are the steps on how to change your Apple ID:

1. Go to appleid.apple.com and sign in with your current Apple ID.
2. In the Sign-In and Security section, click Apple ID.
3. Enter your new email address and click Change Apple ID.
4. You'll be asked to verify your new email address. Follow the instructions in the email to verify your new email address.
5. Once your new email address has been verified, you'll be able to
6. sign in to iCloud, App Store, and other Apple services using your new
7. email address.

Here are some things to keep in mind when changing your iCloud mail address:

• You'll need to update your iCloud mail address on all of your devices.
• You'll need to update your iCloud mail address with any services or websites that use your iCloud mail address.
• If you have any subscriptions or payments linked to your old iCloud mail address, you'll need to update those as well.

I need to change it because is not letting me see my mail or see messages, photos.

See the following Apple articles:

If iCloud Mail isn't working -> If iCloud Mail isn't working - Apple Support

If you can't connect or sign in to iCloud -> If you can't connect or sign in to iCloud - Apple Support

B T W:

You are sign in here .  .  .  with your Apple ID & Password.

Your Apple ID is the personal account you use with all Apple products and services. It includes the email address and password you use to sign in, as well as the contact, payment, and security details that you use with Apple.

You can’t merge multiple Apple ID accounts.

What happens when you use the same Apple ID & Password that you use to sign in here?

See the following Apple articles

Sign in with your Apple ID -> Sign in with your Apple ID - Apple Support

Manage and use your Apple ID -> Manage and use your Apple ID – Apple Support (UK)