How can I tell if an email from Apple is genuine? I keep getting asked to verify my identity
The from email address can be anything, so that means this can be anyone.

To tell if it is really them:


View the full header of the email. Open Mail, open the email, press Cmnd+Shift+H to view the header, look where it came from, obviously you wanna look for apple.com, anything else is most likely fake. Here is part of an example of a legitimate Apple header:



  smtp.mailfrom=new_ndt_bounces@applemusic.com; dkim=pass (identity
  alignment result is pass and alignment mode is relaxed)
  header.d=applemusic.com; x-hmca=pass header.id=new@applemusic.com



See where the link goes. Right click on their "Verify" link, paste it in a text editor and verify if you see any apple.com domains in this link, if not it is most likely fake. If it's a shortened URL, verify it first at Expand URL then check for Apple domains again.