Anything from 5am to 5pm.
I’m sure I’ve heard of the email results taking a couple of days to arrive for some people.
It depends whether or not your email provider perceives the email as spam or not and tries to filter it out.
Major internet providers such as Yahoo! or Hotmail can get tens of thousands of emails from the ACCA all sent out from the same address with the same subject heading and format. Usually when something fits this criteria, the email is spam, so the email provider delays the delivery of the email while it investigates.