You will get a notification once your phone ships which is usually 2-3 days but in rare circumstances can take up to 7.
Also make sure to check your spam/junk folder in your email as it may be sent there depending on how you have your email set up.
Check your spam folder as Paul said. There is supposed to be an email sent to you the second the order is placed with the order info. After a couple days you should get an email with the shipping information.