How can I see the date and time of each message whilst I’m reading it and it’s open?

While reading an email, the "date" is display to the right of the senders emails address. * Emails received between 1 and 7 days ago display only the week day, eg Tue * Emails between a week and one year old dispay the day and month, eg 10 Apr * Emails greater than a year old display the full date. Tapping the sender email / date line presents a box containing the email's '''full date and time'''.