Difficulty adding second iCloud E-mail account to iOS Mail on iPhone

Is it icloud.com, me.com, mac.com, or any third-party email account? icloud.com associated with an Apple ID uses the same password as the Apple ID itself.

Note: If you set up iCloud using an Apple ID that ends with @mac.com or @me.com, you do not need to set up an @icloud.com email address to use iCloud Mail. You already have an equivalent address that ends with @icloud.com.

To create an email alias, see Use email aliases on iCloud.com.

After you set up your @icloud.com email address, you can use it to sign in to iCloud.com and your devices in addition to your Apple ID.

I was facing the same problem. But after talking for some time with Apple Support we finally found the solution. Last week Apple updated it's terms for iCloud and iCloud+. You have to accept these terms for every iCloud-account separately. The only way to do this is to sign in with every other iCloud-account on a iPhone or iPad as the primary iCloud account. Then you will be asked to accept the new terms. After that you can log out and you will be able to add a second mail account using your other iCloud accounts.

Apple has never provided an adequate solution for people who ended up with multiple iCloud accounts due to the fact that Apple didn't allow the use of Apple email address; e.g. *@mac.com to set up an iCloud account when iCloud was first available. They've left their most loyal customers, those who paid a yearly fee for Apple email prior to iCloud, in the lurch. And Apple seems to have completely broken support for multiple iCloud accounts with the latest iCloud updates.

I'm having problems similar to that reported by "over-repairs computers".

• It's impossible to add a second iCloud account to Mail on my new iPad. I end up in the same "verifying" loop described, although I received a 2FA code the first time I entered the password.
• On an iPhone where the account was already setup, since upgrading to iOS 15, I get an error in Mail saying, "no password provided," but when I click "details" it goes to the Mail account page and shows it already logged in.

I have had multiple discussions over the years with Apple Support about this issue, which each iCloud update seems to make worse. Their response has been a non-solution; either lose all the apps and media I've purchased over ten years, or delete my primary email account which I've used for nearly fifteen years. 🤬