Received an email about resetting my Apple ID password at an email not associated with my AppleID
I received an email today from Apple [appleid@id.apple.com] stating that I recently requested a password reset for my Apple ID, and included instructions and links for completing the process. However, the email address that the message was sent to is not associated with my Apple ID. If the email address itself is legitimate, how did they get an email address I never provided?
iPhone 6 Plus, iOS 10.3.3