It is not a requirement of travel for you to print out a boarding pass or confirmation email. Boarding cards will be issued to you at check-in. All we need to check you in on the day is your booking reference number, which will be found in your confirmation email.
We understand some customers like to print their booking confirmation email out, this is fine, but it is not a requirement as all we need to check you in is the booking reference number itself.
Find out what you need to do if you have not received your booking reference here.