Apple mail this icloud account has already been added

The frustrating error message!

"Don't worry, I'm here to help you troubleshoot this issue. Here are a few potential solutions to resolve the 'This iCloud account has already been added' error in Apple Mail:

  1. Check if you're signed in to the correct iCloud account: Make sure you're signed in to the correct iCloud account in Apple Mail. Go to Mail > Preferences > Accounts, and check if the account you're trying to add is already listed. If it is, try signing out of that account and then sign back in.
  2. Remove the existing iCloud account: If you're sure you're signed in to the correct account, try removing the existing iCloud account from Apple Mail. Go to Mail > Preferences > Accounts, select the iCloud account, and click the minus (-) button at the bottom left corner of the window. Then, try adding the account again.
  3. Check your iCloud account settings: Ensure that your iCloud account is set up correctly on your device. Go to Settings > [your name] > iCloud, and check that the account is enabled and set up correctly.
  4. Reset Apple Mail: Sometimes, resetting Apple Mail can resolve the issue. Go to Mail > Preferences > General, and click the "Reset" button. Then, restart Apple Mail and try adding the iCloud account again.
  5. Check for conflicts with other email accounts: If you have multiple email accounts set up in Apple Mail, try removing other accounts and then add the iCloud account again. This might help resolve any conflicts.
  6. Try restarting your device: Sometimes, a simple restart can resolve the issue. Try restarting your device and then try adding the iCloud account again.
  7. Contact Apple Support: If none of the above solutions work, you can contact Apple Support for further assistance. They may be able to help you troubleshoot the issue or provide additional guidance.

I hope one of these solutions helps you resolve the 'This iCloud account has already been added' error in Apple Mail!"