There are two ways to permanently delete email.
1. Tap the Nav icon at the top left corner to display the Navigation Drawer.
2. Tap Trash folder to view your deleted emails.
3. Tap the Sender Avatar of the message(s) you want to delete.
4. Tap the Trash Can icon to delete the email.
1. Tap the Nav icon at the top left corner to display the main menu.
2. Tap Empty next to the Trash Folder.
3. Tap OK when you see the confirmation screen.
Note: You will receive notification that the trash was successfully emptied.