To send an email receipt:
In the yetipay payments app, tap the menu button (top right of the screen)
Choose All transactions
Enter the default pin (1254)
Find the transaction you want to send a receipt for, and tap on it to select it
Tap the Receipt button
Enter in the email address of the customer you want to send an email receipt to
Press the Send button
Currently, only non-integrated email receipts are supported.