If you have your email message notifications enabled but you want to hide/disable a preview of who is emailing who so it's not seen until you open the Sudo profile, follow these steps:
- Tap the menu in the top right corner
- Tap Settings
- Tap the Sudo profile you want to edit
- Tap Notifications
- Under Emails, disable Show Sender and Subject Line
You will still receive a notification of a new email message, but you won't see a preview of the message itself or who sent it.