Could you rephrase your question, or better explain what you're trying to accomplish? Maybe I'm particularly slow today (very possible given it's Monday) but I don't understand what you're asking.
All email accounts, whether you're using the Gmail app or the stock Email app require a password. Gmail uses your Google account password, that you enter when you set up your Google account sync. The Email account password is entered when you set up the account for a particular email address.
Are you wanting the Email app to prompt you for a password every time you wish to view emails for that account?