In PPU Kiosk (Windows only) and PBU you can add a @domain address to the shortcuts above the keyboard when a guest shares through email. This is useful when for corporate events where many guests have the same email domain, e.g. @laphotoparty.com.
1.
Open the Settings of PPU Kiosk and click Set Custom Keyboard Email. In PBU this feature is in the Misc. tab of PBU settings. You can learn about it HERE.
2.
Type in your custom @domain in the text field at the top and click OK.
3.
Click OK in the Preferences window and you're done! Now when a guest selects Email for their sharing option they will see the custom @domain as a shortcut above the keyboard on the right.
Congrats! You have created a custom @domain email button for your Windows Kiosk.