I received this email from Apple Support in regards to a current support case; HOWEVER my last contact about the case was this past Monday and we (somewhat) resolved the issue. I received this email today (5/23/19) at 1am PST, which is definitely odd as Apple Support phone lines are off during that time. I contacted Apple Support on it but they couldnt confirm/deny that the email address is legitimate and it might have been a bug/glitch in their system during the time; I also checked my Apple ID online and nothing is out of the ordinary.
My main concern is if the "AppleSupport@email[.]apple.com" is a legitimate address that Apple uses to send these kind of emails when they couldn't reach you for a callback.
Can anyone help confirm the email's legitimacy?