Add an account
Adding an account will help link your online accounts with your Ubuntu desktop. Thus, your email program, chat program, and other related applications will be set up for you.
Click the Add account button on the left side of the window.
Click the account name you want to add.
If you have more than one account, you can add the other accounts at a later time.
A small website window will open where you can enter your online account credentials. For example, if you are setting up a Google account, enter your Google username and password.
If you've entered your credentials correctly, you will be prompted to allow Ubuntu access to your online account. Select Grant Access to continue.
After you have added the accounts, each application that you have selected will automatically use those credentials when you start them.
For security reasons, Ubuntu will not store your password on your computer. Instead, it stores a token that is provided by the online service. If you want to fully revoke the link between your desktop and the online service,it.