On the right corner of your page, click your account symbol. (Note: you should sign in to two or more accounts) Select “Sign out of all accounts” from the drop-down menu. Then choose which one you’d want to remove. Click Yes after selecting it, and you’re done (just log back into your account
Type the name of the individual whose email address you want to update in the white search bar with your Google Contacts open. Click the checkbox over the incorrect/old email address. Select [Delete] from the drop-down menu in the upper-right corner of the screen.
To remove an account, go to Gmail’s Settings page and look for the garbage can associated with your service. To terminate the account, confirm and follow the on-screen instructions. You may either suspend or delete an account instead of permanently closing it if you want to restore it in the future. Choose the permanent delete option to erase a user rather than
