Our paid plans offer the ability to create custom confirmation and reminder emails. You can include specific details in an email that will go out right after participants sign up, and you can also compose a custom reminder email that will automatically go out to your participants right before the event.
While you are in the process of creating your sign up, you can set these up at "Step 5: Settings". You can also access the "Messages" area from the left side of your account page and choose the "Compose" tab to create your templates.