Mobile Tickets are tickets that are only available in your account on the app or website. It is not possible to receive these tickets per email, as a pdf, or per post.
If you've purchased tickets for others and you're not all arriving at the venue together, you can use Ticket Transfer to transfer one or multiple tickets to their account.
Do you have Mobile Tickets? Please make sure you're logged into your account before heading to the venue to avoid long lines.