Mark as unread button in email application? is there a hidden "Mark as read" button I'm not aware of in the email app in Android?
This probably depends on the device, as devices with custom UIs (TouchWiz, Sense, Motoblur) will have different email applications. On CyanogenMod (and I believe vanilla Android) you simply tick the checkmark next to the message or messages you want and the button slides in from the bottom.