How to Sign Out of Gmail on a Droid
The Droid smartphone runs the Google Android operating system and comes loaded with Google's Gmail application. You can add a number of different Gmail accounts to the app, ensuring that you won't miss an important email from any of your accounts. If you would like to sign out of a Gmail account on your Droid, you'll have to remove the account from within the Gmail app. This procedure can be accomplished in a few steps.
Open the "Gmail" app on your Droid.
Press the "Menu" button on the phone to open the configuration menu at the bottom of the app.
Tap "Accounts" to open the Accounts menu.
Push the "Menu" button once more and select "Account settings."
Tap on the Gmail account that you want to sign out from in the "Manage accounts" section.
Press the "Remove account" button at the bottom of the screen. This email account will no longer show up in the Gmail application on your Android phone.