The registrant can see the invoice under his Evendex login. Still, if the registrant wants an Invoice to send to a different email address, the Event Admin can send it by selecting the Order and Send Invoice Confirmation under Actions and send an Invoice Confirmation via email.
Step 1: Go to Orders.
Step 2: Select the order you wish to send an Invoice confirmation via email and click on the Action button.
Step 3: Click on the Send Invoice confirmation.
Automatically it populates the email address of who purchased the ticket initially. If you would like to change the email address, you can send it to the one whom you want and click on the send button.