Weird emails from Apple to my iPhone
I have been having messages like this since afternoon. And I don’t know why
[Edited by Moderator]
If running iOS 13 or earlier versions, check: Settings - Passwords & Accounts - Accounts - Any rogue entries here? If so, delete the rogue account.
If running iOS 14, check: Settings - Calendar - Accounts - Any rogue entries here? If so, delete the rogue account.
The Apple support article is below.