Keyflow provides an option to send admission tickets you purchased through the app to your friends. You can send them through the events page, or from "My Tickets" page.
Is it necessary that all of your friends receive a QR code confirmation E-mail ?
No. Your friends should be able to show up at the door and show their ID documents to be let in. When you send a ticket to your friend, their name is added to the guest list.
If you need more assistance, reach back to Keyflow support staff.