You won't see your ticket barcode in your email. You need to first download your ticket attachment in your email application. You will then see the large barcode at the top of the PDF.
This is an example of the barcode you will see once your tickets are downloaded:
Please note this barcode is unique and can only be scanned one time at the point of entry. If it is copied and distributed to multiple people the ticket will not work.
If you purchased multiple tickets, please be sure to distribute tickets with different barcodes which are distinguishable by their numbers, located underneath the barcode.