1. Nunify automatically instructs stripe to send a receipt email on purchasing a paid ticket. Nunify will automatically populate the order information (tickets, add-ons, and discounts) in the email.
2. The receipt will be sent to the buyer's billing email address in the registration form.
3. You can customize some email settings on this page of your stripe account - https://dashboard.stripe.com/settings/emails.
4. You can customize the branding (colors, logos, etc.) on this page of your stripe account - https://dashboard.stripe.com/settings/branding.